# Current and Historical Estuary Extent - California [ds2792]

File Geodatabase Feature Class

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Tags
estuaries, estuary, estuary extent, tidal wetlands, West Coast, Pacific Marine and Estuarine Fish Habitat Partnership, PMEP

Summary

    Data clipped to the state of California with a 5 mile buffer by CDFW staff
    ------------------------------------------------------------------------------------------------
    This layer represents the current and historical tidal wetlands, or estuary extent, for the West Coast of the contiguous United States.

Description

                        Accurate mapping of tidal wetlands is vital for effective conservation and restoration of these valued habitats, and good mapping is key to strategic planning for coastal resilience. Tidal wetlands are defined by regular inundation by the tides; therefore, mapping of tidal wetlands should be based on knowledge of tidal water levels and the land areas inundated by the tides. We developed this tidal wetland mapping following that principle.

                        Briefly, we used a method developed in Oregon that combines NOAAs extreme water level models (

                            https://tidesandcurrents.noaa.gov/est/

                          ) with high-resolution LIDAR digital elevation models (DEMs) to map areas subject to tidal inundation. We refined the mapping using additional data sources such as the National Wetland Inventory, local knowledge, and aerial photo interpretation. Detailed information on the Oregon methods can be found here:

                            http://www.coastalatlas.net/documents/cmecs/EPSM_CoreGISMethods.pdf

                        Our mapping includes areas currently inundated by the tides -- current tidal wetlands -- from ocean to head of tide, including the freshwater tidal zone. To assist restoration planning, our mapping also includes historical tidal wetlands -- areas that were historically inundated by the tides, but are no longer inundated by the tides due to human alterations to the landscape such as dikes and tide gates. Although the mapping does not yet distinguish current from historical (disconnected) tidal wetlands, a future mapping phase (currently in the data development phase) will provide that information.

                        Note: This subset of data represents the approximate extent of current and historical tidal wetlands for PMEPs 444 estuaries, excluding unassociated extents and mouth connection areas.

Credits

    Pacific Marine and Estuarine Fish Habitat Partnership, PSMFC GIS, Oregon Coastal Management Program (Department of Land Conservation and Development), NOAA-NWFSC, PC Trask

Use limitations

                        This product is for informational purposes only and is not intended for navigational, legal, engineering, or surveying purposes; it is provided with the understanding that conclusions drawn from the information are the responsibility of the user.

Extent

West | -124.8 | East | -117
North | 49.0 | South | 32.5

Scale Range

Maximum (zoomed in) | 1:5,000
Minimum (zoomed out) | 1:20,000,000

## ArcGIS Metadata ▼►

## Topics and Keywords ▼►

Themes or categories of the resourcebiota, elevation, environment, inlandWaters, oceans
Content typeLive Data and Maps

Export to FGDC CSDGM XML format as Resource DescriptionNo

Place keywordsNorth America, United States of America, West Coast, Pacific Ocean, California

Stratum keywordsBiosphere > Aquatic > estuarine, estuarine, land surface, surface

Thesaurus ▼►

TitleOregon Metadata Keyword Thesaurus – Stratum
Collection titleOregon Metadata Keyword Thesaurus
Resource location online

Location http://www.oregon.gov/geo/Pages/thesaurus.aspx#stratum

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Temporal keywordsmodern, recent

Thesaurus ▼►

TitleOregon Metadata Keyword Thesaurus – Temporal
Collection titleOregon Metadata Keyword Thesaurus
Resource location online

Location http://www.oregon.gov/geo/Pages/thesaurus.aspx#temporal

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Theme keywordsaquatic habitat, marsh, wetlands

Thesaurus ▼►

TitleOregon Metadata Keyword Thesaurus - Bioscience
Collection titleOregon Metadata Keyword Thesaurus
Resource location online

Location http://www.oregon.gov/geo/Pages/thesaurus.aspx#bioscience

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Theme keywordsbay, coast, coastal basin, coastal environment, coastal plain, coastline, environment, estuary, floodplain, harbor, lagoon, lowland, natural resource, ocean, port, river, river delta, stream, stream delta, surface water, tide, tide flat, water

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TitleOregon Metadata Keyword Thesaurus – Geoscience
Collection titleOregon Metadata Keyword Thesaurus
Resource location online

Location http://www.oregon.gov/geo/Pages/thesaurus.aspx#geoscience

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Theme keywordsbay, estuaries, high tide, inundation, marsh, slough, stream, streams, surface water, tide, wetland

Thesaurus ▼►

TitleOregon Metadata Keyword Thesaurus – Hydrography
Collection titleOregon Metadata Keyword Thesaurus
Resource location online

Location http://www.oregon.gov/geo/Pages/thesaurus.aspx#hydrography

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Theme keywordsestuary, marsh, swamp, tidal

Thesaurus ▼►

TitleOregon Metadata Keyword Thesaurus – Land Cover / Land Use
Collection titleOregon Metadata Keyword Thesaurus
Resource location online

Location http://www.oregon.gov/geo/Pages/thesaurus.aspx#lclu

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## Citation ▼►

TitleCurrent and Historical Estuary Extent - California [ds2792]
Creation date2017-09-01 00:00:00
Publication date2017-11-30 00:00:00
Revision date2018-02-15 00:00:00
Edition1.0.1
Edition date2018-02-15
Presentation formatsdigital document
FGDC geospatial presentation formatvector digital data
Collection titlePMEP Spatial Data System
Other citation details

      This product was created by the Pacific Marine and Estuarine Fish Habitat Partnership, and is part of a spatial data system for estuarine and nearshore environments for the West Coast of the contiguous United States.  For more information, email gis@psmfc.org

      Vers. 1.0.1:  Fixed spelling errors in 2 estuaries (Tulalip Bay and Elwha River)

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## Citation Contacts ▼►

Responsible party

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's roleoriginator

Contact information ▼►

Phone

Voice503-595-3100

Address

Typeboth
Delivery point205 SE Spokane St., Suite 100
CityPortland
Administrative areaOR
Postal code97202
CountryUS
e-mail address gis@psmfc.org

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Responsible party

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's rolepoint of contact

Contact information ▼►

Phone

Voice503-595-3100

Address

Typeboth
Delivery point205 SE Spokane St., Suite 100
CityPortland
Administrative areaOR
Postal code97202
CountryUS
e-mail address gis@psmfc.org

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## Resource Details ▼►

Dataset languages *English (UNITED STATES)
Dataset character setutf8 - 8 bit UCS Transfer Format
Statuscompleted
Spatial representation type *vector
* Processing environmentMicrosoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.5.1.7333
Credits

      Pacific Marine and Estuarine Fish Habitat Partnership, PSMFC GIS, Oregon Coastal Management Program (Department of Land Conservation and Development), NOAA-NWFSC, PC Trask

ArcGIS item properties

* Nameds2792
* Locationfile://\\geodata.ad.dfg.ca.gov\BIOS\WorkArea\ds2700-2799\2792-CurrentandHistoricalEstuaryExtent_PMEP\v1\v1_final\ds2792.gdb

* Access protocolLocal Area Network

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## Extents ▼►

Extent

Description

      These data cover estuaries from the U.S-Canada border to the U.S.-Mexico border.  Estuaries were included based on their current or future potential to provide habitat for fish species.  It is possible that this list will expand or contract over time, as determined by the needs of the Pacific Marine and Estuarine Fish Habitat Partnership (PMEP).
      Vertical Extent:
      Generally, the vertical extent of the dataset is from the highest head of tide point elevation to minus four meters Mean Lower Low Water (MLLW) for non-lagoonal estuaries in the Salish Sea, and to the modified CUSP shoreline for all other estuaries (see Process Step 1 for details).  The exceptions are tidal and tidally-influenced polygons from the National Wetlands Inventory which extend beyond the 50% exceedance elevation.

Geographic extent

Bounding rectangle

West longitude-124.7
East longitude-117
South latitude32.5
North latitude49.0
Extent contains the resourceYes

Extent

Geographic extent

Bounding rectangle

Extent typeExtent used for searching
West longitude-124.8
East longitude-117
South latitude32.5
North latitude49.0

Extent in the item's coordinate system

* West longitude-372373.774800
* East longitude274405.589300
* South latitude-604264.762400
* North latitude458126.382900
* Extent contains the resourceYes

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## Resource Points of Contact ▼►

Point of contact

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS Team
Contact's roleoriginator

Contact information ▼►

Phone

Voice503-595-3100

Address

Typeboth
Delivery point205 SE Spokane St., Suite 100
CityPortland
Administrative areaOR
Postal code97202
CountryUS
e-mail address gis@psmfc.org

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## Resource Maintenance ▼►

Resource maintenance

Update frequencyas needed

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## Resource Constraints ▼►

Constraints

Limitations of use

                                This product is for informational purposes only and is not intended for navigational, legal, engineering, or surveying purposes; it is provided with the understanding that conclusions drawn from the information are the responsibility of the user.

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## Spatial Reference ▼►

ArcGIS coordinate system

* TypeProjected
* Geographic coordinate referenceGCS_North_American_1983
* ProjectionNAD_1983_California_Teale_Albers
* Coordinate reference details

Projected coordinate system

Well-known identifier3310
X origin-16909700
Y origin-8597000
XY scale10000
Z origin-100000
Z scale10000
M origin-100000
M scale10000
XY tolerance0.001
Z tolerance0.001
M tolerance0.001
High precisiontrue
Latest well-known identifier3310
Well-known textPROJCS["NAD_1983_California_Teale_Albers",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Albers"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",-4000000.0],PARAMETER["Central_Meridian",-120.0],PARAMETER["Standard_Parallel_1",34.0],PARAMETER["Standard_Parallel_2",40.5],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3310]]

Reference system identifier

Dimensionhorizontal
* Value3310
* CodespaceEPSG
* Version6.8(9.2.0)

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## Spatial Data Properties ▼►

Vector ▼►

* Level of topology for this datasetgeometry only
Geometric objects

Feature class nameds2792
* Object typecomposite
* Object count193

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ArcGIS Feature Class Properties
▼ ►

Feature class nameds2792

* Feature typeSimple
* Geometry typePolygon
* Has topologyFALSE
* Feature count193
* Spatial indexTRUE
* Linear referencingFALSE

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## Data Quality ▼►

Scope of quality information ▼►

Resource leveldataset

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## Lineage ▼►

Lineage statement

      Data clipped to the state of California with a 5 mile buffer by CDFW staff
      -----------------------------------------------------------------------------------------------------------------------------
      These data are based on a combination of NOAA’s extreme water level models, high-resolution LiDAR digital elevation models (DEMs), estuarine and tidally-modified classes from the National Wetland Inventory (NWI), local knowledge, and aerial photo interpretation.  The Oregon Coastal Management Program (Oregon Department of State Lands) developed this methodology and mapped the major estuaries within Oregon (excluding the Columbia River), and we have extended this to include estuaries in Washington and California, as well as a few estuaries not included in Oregon’s effort.  For detailed background on Oregon’s methods, please visit http://www.coastalatlas.net/documents/cmecs/EPSM_CoreGISMethods.pdf .
      Generally, the individual component spatial data sources are stored and maintained in a companion dataset (“PMEP Estuary Extent Sources”), which is dissolved into the final polygons representing the current and historical estuary extent and attributed with various estuary information.  This is accomplished through Esri’s ModelBuilder tool, a visual programing language for building GIS workflows, allowing for numerous geoprocessing steps to be automated, and for repeated use and providing documentation for the process.
      All associated spatial data are maintained in a custom Transverse Mercator coordinate system, a West Coast regional projection with minimal distortion of distance and area.  Any calculations of area within these data utilize this projection.  Data are then projected for publishing online, generally using the WGS 1984 Web Mercator (auxiliary sphere) coordinate system.

Process step
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When the process occurred2016-02-09 00:00:00
Description

      Use NOAA’s Continually Updated Shoreline Product (CUSP), and Oregon’s Continually Updated Shoreline Product (OCMP CUSP) in order to establish the seaward extent of the estuaries (only for estuaries outside of the Salish Sea).  The two shoreline datasets were merged into one layer, ‘Shoreline_PMEP_CUSP_wcm”, after creating a field (“DataSource”) to track the inputs.  A new field was added to code the type of shoreline feature (“PMEP_Type”).  Options in this field include “coast” (outer coast), “inside estuary”, “N/A” (sea stacks, rocks, islands, etc.), “remove” (NOAA’s CUSP overlapping with Oregon’s CUSP), and “seaward” (newly digitized line to limit seaward estuary extent).  Any features created outside of the two data source inputs will have “DataSource” = ‘PMEP’.  The only other changes to the input geometry involve splitting the line segments at specific locations, and assigning shorelines types in a new field, “PMEP_Type”, as appropriate.

Rationale

      This layer allows for the establishment of a consistent seaward boundary for estuaries along the outer coast of the Pacific Ocean, following the Coastal and Marine Ecological Classification Standard (CMECS).  For those estuaries which have shoreline data extending internally within the estuary, a new feature (or features) was created to establish the seaward extent.

Process contact

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's roleprocessor

Contact information ▼►

Address

Type
e-mail address gis@psmfc.org

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Process step
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When the process occurred2016-02-12 00:00:00
Description

      Based on Oregon’s methodology, select classes of the National Wetlands Inventory (NWI) that extended beyond the 50% exceedance layer were appended to the dataset, which will now be called ‘PMEP Estuary Extent Source’ layer.  This will be the primary spatial layer which is appended to and modified in the development of the estuary extent layer in the following Process Steps.  NWI classes appended to the dataset are, all Estuarine system classes and all Palustrine and Riverine system classes with tidal modifiers (‘S’, ‘Q’, ‘R’, ‘T’, and ‘V’).
      All NWI codes within the PMEP Estuary Extent Selector polygon were exported into a table and the “Attribute” field was decoded into the NWI levels (System, Subsystem, Class, Subclass, and Modifiers) for ease of use.  It was determined that certain Attributes within these codes contained case errors which caused incorrect Attribute level codes to be assigned.  The NWI Wetland Coder Interpreter tool (available @ https://www.fws.gov/wetlands/data/wetland-codes.html) was used to fix these errors.  Examples of this error are:  E1UBLH (should be E1UBLh) and E2EMPS (should be E2EMPs).

Rationale

      Based on Oregon’s determination and PMEP’s technical experts, it is thought that the National Wetlands Inventory is conservative in its classification of tidal wetlands, so the inclusion of these NWI Estuarine and tidally-modified classes where they extended beyond the 50% exceedance layer is warranted.

Process contact

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's roleprocessor

Contact information ▼►

Address

Type
e-mail address gis@psmfc.org

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Process step
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When the process occurred2016-02-19 00:00:00
Description

      Using available imagery sources, including the National Agriculture Imagery Program (NAIP), historical imagery available in Google Earth, and other imagery sources, a new extent type was added to the PMEP Estuary Extent Sources layer to depict areas beyond the current estuary extent where the estuary mouth was present in other imagery sources.  These polygons are contiguous with the mapped estuary, and are inland of the PMEP shoreline layer.

Rationale

      The estuary extent as mapped, is based on specific LiDAR sources and the National Wetlands Inventory (NWI), which represent static snapshots of the estuary at the time of data collection.  Many estuaries are quite dynamic, and the locations of their features, especially near the interface of the estuary and the ocean, can vary greatly over time due to various factors.  The addition of the “mouth connection” extent type attempts to capture the range of movement of the estuary mouths during recent history.  This extent type is not included in the estuary area calculations, and is for reference purposes only.

Process contact

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's roleprocessor

Contact information ▼►

Address

Type
e-mail address gis@psmfc.org

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Process step
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When the process occurred2016-02-24 00:00:00
Description

      The extent of the Estuary Regional Technical Group’s  (ERTG) Columbia River 2 Year Flood Elevation (also called “50% Annual Exceedance Probability”) was appended to the PMEP Estuary Extent Sources layer, where it extended beyond the current extent of that layer.

Rationale

      There were minor differences in the methods used to calculate the 50% exceedance used by PMEP and the ERTG.  Upon examination of both layers, it was decided by PMEP technical experts that the ERTG’s 50% Annual Exceedance Probability layer would be added to the PMEP Estuary Extent Sources layer, where it extended beyond PMEP’s mapped estuary extent sources.

Process contact

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's roleprocessor

Contact information ▼►

Address

Type
e-mail address gis@psmfc.org

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Process step
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When the process occurred2016-03-07 00:00:00
Description

      For California estuaries classified as lagoonal, append the estuary extent for those areas which are beyond the current PMEP Estuary Extent Source layer, using data from “An Inventory and Classification of U.S. West Coast Estuaries” (Heady, et. al, 2015).  These data were created through a process which included digitizing based on the latest aerial imagery (Landsat, Google Earth, and the California Coastal Records Project), where NWI or other sources were obviously incorrect, or not available.

Rationale

      Because lagoonal systems intermittently disconnected from the ocean by sediment accumulations, the mapped extent based on the 50% annual exceedance methods can be smaller than their true size.  Also, these systems are often not well represented in NWI, and some small systems are missing entirely.  For these reasons, it was decided that the lagoonal estuaries in California will include those extents as digitized in “An Inventory and Classification of U.S. West Coast Estuaries”.

Process contact

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's roleprocessor

Contact information ▼►

Address

Type
e-mail address gis@psmfc.org

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Process step
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When the process occurred2016-05-10 00:00:00
Description

      The Pacific Marine and Estuarine Fish Habitat Partnership (PMEP) conducted an internal review process to solicit feedback on the draft estuary extent mapping.  A password-protected web mapping application was created to allow PMEP members to provide input on the estuary layer.  Once input was complete, these point locations were categorized into types based on the nature of the input given.  Feedback which was determined to be actionable and within the scope of the current process was categorized as such.  Edits were then made to the PMEP Estuary Extent Source layer, or the PMEP Estuary Extent Selector layer, as necessary to make the desired modifications.

Rationale

      PMEP members come from many different organization and agencies, and possess expert knowledge about estuary systems along the West Coast.  This group’s input on the estuary mapping during the data development phase improved the mapping of specific locations and provided valuable feedback, based on their intimate knowledge of these systems.

Process contact

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's roleprocessor

Contact information ▼►

Address

Type
e-mail address gis@psmfc.org

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Process step
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When the process occurred2016-06-03 00:00:00
Description

      The 50% Exceedance layer established the upslope extent of the current and historical estuaries in the Salish Sea region, but there needed to be a process to determine which areas would be specifically established in PMEP’s estuary mapping.  Previously, the “Inventory and Classification of U.S. West Coast Estuaries” (Heady, et. al., 2015) had utilized the seven estuary subbasins for the U.S. portion of the Salish Sea, as established by the Puget Sound Nearshore Ecosystem Restoration Project (PSNERP).  PMEP desired to map individual Salish Sea estuaries within these subbasins in greater detail, using the 50% Exceedance layer and NWI sources for geometry.
      The PSNERP technical report “2012-01:  Strategies for Nearshore Protection and Restoration in Puget Sound” (http://www.pugetsoundnearshore.org/technical_papers/psnerp_strategies_maps.pdf) developed a landscape-based framework for restoration and protection of nearshore ecosystem sites.  This report included a detailed assessment of 1,544 overlapping sites among four landscape classes: deltas (16), beaches (744), barrier embayment systems (518), and coastal inlets (266).  Data representing site potential and degradation were developed and analyzed using both remotely-sensed and field data.  For each strategy, sites were ranked using a potential score, and were placed into groups, based on their similarity.  Groups of sites with the highest ranking were assigned a high potential score.  All site data from this assessment can be found in Appendix B of the report.  Sites in bold with darker shading are “high potential” sites based on potential group, as discussed in the report recommendations section.
      While PSNERP’s nearshore sites are mapped using different methods and at a different scale than the estuaries as mapped by PMEP, we utilized this resource to cross-reference PMEP’s estuary extent with the high-potential barrier embayment and coastal inlet sites, as identified in the report and the associated geodatabase.  We included these locations in our estuary mapping, with other mapped estuary extent areas becoming “unassociated extents” in the PMEP data structure.   We also included all 16 major river deltas in our mapping products.  Nearly 150 estuaries in the Salish Sea PMEP Region were identified and explicitly included in PMEP’s mapping products by referencing the PSNERP technical report’s high-potential sites.

Rationale

      The PSNERP technical report “2012-01: Strategies for Nearshore Protection and Restoration in Puget Sound” is a detailed document which was created through a multi-stakeholder effort between government agencies, universities, tribes and environmental organizations.  It lays out their strategy very clearly, and uses quantitative metrics to support ranking of their units and the determination of high priority sites.  It is a great resource for the region and PMEP chose to utilize it to ensure that, at a minimum, the high priority sites identified in the PSNERP report were included in PMEP’s estuary extent mapping.

Process contact

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's roleprocessor

Contact information ▼►

Address

Type
e-mail address gis@psmfc.org

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Process step
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When the process occurred2017-03-30 00:00:00
Description

      For non-lagoonal estuaries in the Salish Sea region, a layer was created to consistently establish a seaward boundary for the mapped estuary extents.  It was determined that the most suitable layer for this purpose would be a bathymetric depth contour.  For lagoonal systems in the Salish Sea, the shoreline layer determined the seaward boundary.
      GIS Specialist Hiroo Imaki (NOAA Northwest Fisheries Science Center) created line layer depicting the 4 meter depth contour below Mean Lower Low Water (MLLW), using NOAA’s (National Geophysical Data Center) Integrated Models of Coastal Relief digital elevation models (DEMs).
      PSMFC GIS staff projected the data to the West Coast Custom Mercator projection and then applied a line smoothing algorithm to this layer in order to produce a more natural looking depth contour layer (Smoothing Algorithm = PAEK, Smoothing Tolerance = 50 meters).
      Once the smoothing was applied to the Minus 4-meter MLLW layer, all non-lagoonal estuaries in the Salish Sea region were extended, or trimmed so that the seaward extent was coincident with this line.  This process added a new type of source to the PMEP Estuary Extent Sources layer for some Salish Sea estuaries, called “minus 4 MLLW extension”.

Rationale

      The 4-meter depth contour below MLLW was established as the seaward boundary for Salish Sea estuaries because this contour is used in the Coastal and Marine Ecological Classification Standard (CMECS) to divide the Estuarine System into the Coastal and the Estuarine Open Water subsystems.  According to CMECS, “the 4 meter contour was selected as a cutoff between coastal and offshore estuarine waters because it identifies (somewhat arbitrarily) a region that is both shallow and generally in close proximity to the shore, making the substrate-to-water volume ratio here the highest in the entire estuary…. The high wetland-water ratio and pelagic-benthic connectivity makes the Estuarine Coastal Subsystem an extremely dynamic and active area in terms of hydrodynamics, geology and biology.”

Process contact

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's roleprocessor

Contact information ▼►

Address

Type
e-mail address gis@psmfc.org

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Process step
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When the process occurred2017-05-15 00:00:00
Description

      The series of steps required in order to transform the PMEP Estuary Extent Source layer into the final estuary extent layer involves a number of geoprocessing tasks, many of which are accomplished using the ModelBuilder tool in ArcCatalog (part of Esri’s ArcMap product).  This visual programing language for building GIS workflows allows for numerous geoprocessing steps to be automated, allowing for repeated use and providing documentation for the process.  The following steps are required for deriving the final estuary extent layer from the PMEP Estuary Extent Source layer:
      Model 1:  PMEP_Estuary_Extent_Processing_01
      Dissolves selected features from the ‘PMEP Estuary Extent Sources’ layer into contiguous features.  Those features not included in this process include those flagged as being outside of the estuary extent, extents digitized to represent the range of the estuary mouths (estuary mouth connection areas), as well as any estuary extents which overlap with Oregon’s estuary mapping.
      Dissolves line features in ‘PMEP Estuary Extent Split Lines’ layer based on “LineGroup” field.
      Manual Process 1:  Split estuary extent using dissolved split lines.
      Bring the 2 output layers (“PMEP_Estuary_Extent_Split_Lines_Dissolved” and  “PMEP_Estuary_Extent_Dissolve_Model01”) created in the model “PMEP_Estuary_Extent_Processing_01” into an ArcMap session.  Make the line layer the only selectable layer and start editing the polygon layer.  Open the line layer and select one feature (e.g. LineGroup = 1).  On the Advanced Editing toolbar, click on the Split Polygons tool.  When prompted, select the Target to be the polygon layer (“PMEP_Estuary_Extent_Dissolve_Model01”), then click OK.  This will split the polygon using the selected line feature, effectively dividing the estuary extent into two or more features.  Repeat this step for all remaining features in the line dataset.  Save edits when done.
      Model 2:  PMEP_Estuary_Extent_Processing_02
      This model takes the output of the splitting step (PMEP_Estuary_Extent_Dissolve_Model01), the Oregon Coastal Management Program’s (OCMP) estuary extent (CMECS aquatic and biotic layers, dissolved), and the estuary mouth connection areas and attributes them with codes indicating their extent type and data source.  These layers are then merged into one dataset, “PMEP_Estuary_Extent_Merged”.
      Manual Process 2:  Split Select OCMP estuaries using dissolved split lines.
      Add the layer “PMEP_Estuary_Extent_Merged” and the “PMEP_Estuary_Extent_Split_Lines_Dissolved” layer into an ArcMap session.  Make the line layer the only selectable layer and start editing the “PMEP_Estuary_Extent_Merged” layer.  Open the line layer table and select LineGroup = 22.  On the Advanced Editing toolbar, click on the Split Polygons tool.  When prompted, selecte “PMEP_Estuary_Extent_Merged” as the target, and then click “OK”.  Repeat with LineGroup = 23.  Save edits when done.
      Manual Process 3:  Assign IDs/Associate Extents
      This step takes the estuary extent layer and performs a simple spatial join to associate IDs from the overlay layer with those polygons within them.  Note that this tool causes the ModelBuilder application to crash, so it must be done from the tool in ArcCatalog, or within an ArcMap session.
      Spatial Join Tool Parameters:
      Target Features:  PMEP_Estuary_Extent_Merged
      Join Features:  PMEP_Estuary_Extent_Overlay_Selector
      Output Feature Class:  PMEP_Estuary_Extent_Merged_Selector_Join
      Join Operation: JOIN_ONE_TO_ONE
      Keep all target features: yes
      Field Map of Join Features:
      Extent_Type (Text)
      Date_Source (Text)
      Extent_Type (Text)
      PMEP_EstuaryID (Short)
      Estuary_Name (Text)
      Link (Text)
      Match Option: WITHIN
      Model 3:  PMEP_Estuary_Extent_Processing_03
      This model dissolves the estuary extent areas and the mouth connection areas at the Estuary ID level.  It also attributes unassociated extent areas.  It then merges the three components into a new dataset, and then calculates the area (in acres) of each type of estuary extent.
      Model 4:  PMEP_Estuary_Extent_Processing_04
      This step calculates the area of each estuary extent polygon in acres (using the custom West Coast Mercator projection) and categorizes them as estuary acres, or as other areas (e.g. mouth connection areas do not count towards estuary area).  It also joins a count of the number of contiguous estuary polygons which make up the multi-part dissolved estuary extent.

Rationale

      These steps allow the final estuary extent layer to be created in a logical and consistent manner, based on updates to the source inputs and geometries.  These steps also associate data from PMEP with the estuary extent polygons.

Process contact

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's roleprocessor

Contact information ▼►

Address

Type
e-mail address gis@psmfc.org

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Source data
▼ ►

Description

      Following Oregon’s methods, an upper boundary for intertidal wetlands was created using NOAA’s Extreme Water Levels analysis (https://tidesandcurrents.noaa.gov/est/).  NOAA Extreme Water Levels analysis provides several exceedance level water elevations (1%, 10%, 50%, and 99%).  These represent annual probabilities of water levels exceeding the given elevation – probabilities of 1%, 5%, 50%, and 99% respectively.  This analysis is based upon the observed water levels during a period of at least 30 years, which includes the water level elevations associated with storms and floods.  Using field ground-truthing, Oregon’s team (Oregon Coastal Management Program – DLCD) determined that the 50% exceedance contour was a good fit for the approximate maximum extent of tidal wetland habitats.  The 50% exceedance value was calculated using NOAA’s existing network of observed locations and NOAA’s Vertical Datum Transformation Tool, or VDatum (https://vdatum.noaa.gov/welcome.html).  Values were extrapolated for the estuaries where no VDatum coverage were available using the Euclidean allocation method.
      The seaward boundary for Salish Sea estuaries was established using a depth contour of minus 4 meters NAVD88.  (Note: This depth was updated to minus 4 meters MLLW during a later processing step.)
      Generally, elevation data came from the NOAA Office for Coastal Management Coastal Inundation Digital Elevation Model data.  https://coast.noaa.gov/slrdata/  These DEMs are part of a series of DEMs produced for the NOAA Office of Coastal Management’s Sea Level Rise and Coastal Flooding Impacts Viewer.  The DEMs include the best available LiDAR data known to exist at the time of DEM creation for each Weather Forecast Office (WFO).  The resolution of each DEM is approximately 5 meters, though some areas may have higher resolutions.
      Downloaded from https://coast.noaa.gov/htdata/raster2/elevation/SLR_viewer_DEM_6230/
      - WA_SEW1_GCS_5m_NAVD88m
      - WA_SEW2_GCS_5m_NAVD88m
      - WA_SEW3_GCS_5m_NAVD88m
      - WA_PQR_GCS_5m_NAVD88m
      - OR_MFR_GCS_5m_NAVD88m
      - OR_PQR1_GCS_5m_NAVD88m
      - OR_PQR2_GCS_5m_NAVD88m
      - CA_EKA1_GCS_5m_NAVD88m
      - CA_EKA2_GCS_5m_NAVD88m
      - CA_LOX1_GCS_5m_NAVD88m
      - CA_LOX2_CGS_5m_NAVD88m
      - CA_MTR1_GCS_5m_NAVD88m
      - CA_MTR2_GCS_5m_NAVD88m
      - CA_MTR3, GCS_5m_NAVD88m
      - CA_SGX_GCS_5m_NAVD88m
      Additional elevation data utilized in the Salish Sea region includes the Combined bathymetry and topography of Puget Lowland (Finlayson, 2005), and the Puget Sound Digital Elevation Model (Finlayson, 2000).
      Finlayson D.P., Haugerud R.A., Greenberg, H. and Logsdon, M.G. (2000) Puget Sound Digital Elevation Model. University of Washington, (https://www.ocean.washington.edu/data/pugetsound/psdem2000.html
      Finlayson D.P. (2005) Combined bathymetry and topography of the Puget Lowland, Washington State. University of Washington, (https://www.ocean.washington.edu/data/pugetsound/psdem2005.html)
      Additional elevation data utilized in the San Francisco Bay/Sacramento-San Joaquin Delta region came from California Department of Water Resources, NOAA, and USGS.
      1. 10-meter bathymetry - California DWR: (https://data.noaa.gov/dataset/2009-2011-ca-coastal-california-topobathy-merged-project-digital-elevation-model-dem)
      2. 2-meter topo/bathy – NOAA (https://data.noaa.gov/dataset/2009-2011-ca-coastal-california-topobathy-merged-project-digital-elevation-model-dem)
      3. 10-meter Digital Elevation Model – USGS National Elevation Dataset (https://catalog.data.gov/dataset/usgs-national-elevation-dataset-ned)
      Additional elevation data from the Puget Sound Lidar Consortium (http://pugetsoundlidar.ess.washington.edu/lidardata/) were utilized to cover areas around the Olympic Penninsula.
       Clallam County: 2001-02clallam
      http://pugetsoundlidar.ess.washington.edu/lidardata/restricted/projects/2001-02clallam.html
       Olympic Peninsula: 2005olympic
      http://pugetsoundlidar.ess.washington.edu/lidardata/restricted/projects/2005olympic.html
       Hoh River Watershed: 2012-13hoh
      http://pugetsoundlidar.ess.washington.edu/lidardata/restricted/projects/2012-13hoh.html

Source citation ▼►

TitleWest Coast Estuary Candidate 20160218
Creation date2016-02-18 00:00:00
Other citation details

      The development of this layer was a complex, iterative process including extensive review and input from PMEP members.  For additional questions about specific methods used in the development of this layer, please contact PSMFC GIS staff (gis@psmfc.org).

Responsible party

Individual's nameHiroo Imaki
Organization's nameNOAA Northwest Fisheries Science Center
Contact's positionGIS Specialist
Contact's roleoriginator

Contact information ▼►

Address

Type
e-mail address Hiroo.imaki@pacificspatial.com

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Extent of the source data

Geographic extent

Bounding rectangle

West longitude-124.71
East longitude-117.07
South latitude32.53
North latitude49.01
Extent contains the resourceYes

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Source data
▼ ►

Description

      NOAA’s Continually Updated Shoreline includes all national shorelines that have been verified by contemporary imagery and shoreline from other non-NOAA sources. This shoreline vector only includes shoreline and alongshore features that represent shoreline (groin, breakwater, and jetty).  These data provide available contemporary high-resolution national shoreline.
      The shoreline is a representation based on an office interpretation of imagery or derived from Lidar. Shoreline vectors were verified with contemporary imagery. Sources of non-NOAA vector shoreline included U.S. Fish and Wildlife Service, North Carolina Department of Environment and Natural Resources, and U.S. Geological Survey. Non-NOAA imagery sources for interpreting shoreline included USDA-FSA Aerial Photography Field Office, ESRI Imagery World 2D (USGS, U.S. Geological Survey, and U.S. Department of Agriculture), Bing Maps Imagery Service, and Google Earth (TerraMetrics and DigitalGlobe).

Source medium nameonline link
Source citation ▼►

TitleContinually Updated Shoreline Product
Alternate titlesCUSP
Publication date2016-06-21 00:00:00
Responsible party

Individual's nameDoug Graham
Organization's nameNOAA National Geodetic Survey
Contact's rolepoint of contact

Contact information ▼►

Address

Type
e-mail address Doug.Graham@noaa.gov

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Resource location online

Locationhttps://www.ngs.noaa.gov/CUSP/
DescriptionWestern.shp
Function performeddownload

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Source data
▼ ►

Description

      This data layer is an element of the Oregon GIS Framework. The Oregon CUSP shoreline represents a "best of" attempt to create a continuous Mean High Water Shoreline for use in GIS analysis and inventory work. Whenever possible the Oregon CUSP shoreline references a mean-high water shoreline based upon vertical modelling or image interpretation, using both water level stations and/or shoreline indicators. CUSP is primarily built from LiDAR NGS National Shoreline data for the outer Pacific Ocean coast and Oregon Lidar Consortium data for the inner estuarine coast.

Source medium nameonline link
Source citation ▼►

TitleOregon Continually Updated Shoreline Product OCMP - 2015
Publication date2014-07-01 00:00:00
Responsible party

Individual's nameRandy Dana
Organization's nameOregon Coastal Management Program
Contact's positionGIS Program Leader
Contact's rolepoint of contact

Contact information ▼►

Address

Type
e-mail address randy.dana@state.or.us

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Resource location online

Location http://spatialdata.oregonexplorer.info/geoportal/details;id=e53a8aa7db51458fae9524bbfc503ffc

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Extent of the source data

Geographic extent

Bounding rectangle

West longitude-124.827686
East longitude-123.488393
South latitude41.933957
North latitude46.244579
Extent contains the resourceYes

Temporal extent

Beginning date2004-01-01 00:00:00
Ending date2014-07-31 00:00:00

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Source data
▼ ►

Description

      This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps.

Source medium nameonline link
Resolution of the source data

Scale denominator24000

Source citation ▼►

TitleNational Wetlands Inventory (USFWS)
Creation date1977-01-01 00:00:00
Publication date2016-01-01 00:00:00
EditionVersion 2
Edition date2016-01-26
Responsible party

Organization's nameU.S. Fish and Wildlife Service
Contact's positionWetlands Database Administrator
Contact's rolepoint of contact

Contact information ▼►

Address

Type
e-mail address wetlands_team@fws.gov

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Resource location online

Locationhttps://www.fws.gov/wetlands/data/State-Downloads.html
NameWashington, Oregon, California
Descriptionseamless wetlands data by state (downloaded 1/29/16)
Function performeddownload

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Extent of the source data

Description

      State data for the Washington, Oregon, and California were downloaded on 1/29/2016 from the U.S. Fish and Wildlife Service website @ https://www.fws.gov/wetlands/data/State-Downloads.html on 1/29/2016, and were then merged into one seamless dataset, after removing duplicate features along the boundaries of the states.

Geographic extent

Bounding rectangle

West longitude-124.76
East longitude-116.9
South latitude32.5
North latitude49.0
Extent contains the resourceYes

Temporal extent

Beginning date1980-01-01 00:00:00
Ending date2014-12-31 00:00:00

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Source data
▼ ►

Description

      Geometries for certain estuary systems in California were digitized as part of “An Inventory and Classification of U.S. West Coast Estuaries” (Heady, et. al., 2015).  This inventory identified certain estuaries in California, especially lagoonal systems, were poorly represented in NWI and other available data sources.  This group undertook a process to digitize these systems using the latest aerial imagery (Landsat, Google Earth) and the California Coastal Records Project.

Source medium namehard disk
Source citation ▼►

TitleAn Inventory and Classification of U.S. West Coast Estuaries
Publication date2015-04-01 00:00:00
Responsible party

Individual's nameWalter Heady
Organization's nameThe Nature Conservancy
Contact's positionCoastal Marine Ecologist
Contact's rolepoint of contact

Contact information ▼►

Address

Type
e-mail address wheady@tnc.org

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Extent of the source data

Description

      Note that only the spatial data incorporated into PMEP’s mapping were for lagoonal estuaries in California.

Geographic extent

Bounding rectangle

West longitude-124.78
East longitude117.07
South latitude32.53
North latitude49.0
Extent contains the resourceYes

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Source data
▼ ►

Description

      Description from Resulting Study:
      The Expert Regional Technical Group (ERTG) of the Columbia Estuary Ecosystem Restoration Program conducted an Analysis of Water Levels for Site Delineation in Tidal-Dominated Regions (ERTG 2012-01, Rev 1) to identify sites suitable for restoration in the Columbia River Estuary.  For this analysis, the ERTG developed a standard hydrological modeling method to determine the maximum water level that would recur every other year (the 2-year river flood event), which they also refer to as the “50% annual exceedance probability.”

Source medium namehard disk
Source citation ▼►

TitleUnited States Army Corps of Engineers 50% Annual Exceedance Probability Stage for Survival Benefit Unit for the Lower Columbia River Estuary
Alternate titlesERTG 2012-01, Rev 1
Publication date2012-09-10 00:00:00
Other citation details

      Citation: PC Trask and Associates. United States Army Corps of Engineers 50% Annual Exceedance Probability Stage Profile for Survival Benefit Unit for the Lower Columbia River Estuary, 2011: Portland, OR.

Responsible party

Individual's nameAlex McManus
Organization's namePC Trask and Associates, Inc.
Contact's positionProject Manager
Contact's rolepoint of contact

Contact information ▼►

Address

Type
e-mail address alex@pctrask.com

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Extent of the source data

Description

      These data cover the tidally-influenced areas of the lower Columbia River.

Geographic extent

Bounding rectangle

West longitude-124.10
East longitude-121.93
South latitude45.35
North latitude46.36
Extent contains the resourceYes

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Source data
▼ ►

Description

      Members of the Pacific Marine and Estuarine Fish Habitat Partnership (PMEP) were provided the opportunity to review the estuary extent data during the data development process.  Members provided input to the mapping based on their expert knowledge and professional experience with West Coast estuaries.  In some cases, these inputs resulted in modifications to the estuary extent.

Source citation ▼►

TitlePMEP_DataReview_Notes
Revision date2016-09-28 00:00:00
Responsible party

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS

Contact information ▼►

Address

Type
e-mail address gis@psmfc.org

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Extent of the source data

Geographic extent

Bounding rectangle

West longitude-124.4
East longitude-117.2
South latitude32.92
North latitude48.52
Extent contains the resourceYes

Temporal extent

Beginning date2016-07-26 00:00:00
Ending date2016-09-28 00:00:00

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Source data
▼ ►

Description

      In order to establish a consistent seaward boundary for non-lagoonal estuaries in the Salish Sea, as well as to define estuary classes within the Coastal and Marine Ecological Classification Standard, a depth contour of minus 4 meters below Mean Lower Low Water (MLLW) was created by Hiroo Imaki (NOAA - NWFSC).  This layer was created using NOAA’s Coastal Digital Elevation Models (DEMs), which integrate bathymetric and topographic DEMs and are used to support tsunami forecasting and warning efforts.  These are also referred to as Integrated Models of Coastal Relief.
      DEMs Utilized:  Arena Cove, Astoria_V3, Central OR Coast, Crescent City, Eureka, Fort Bragg, Garibaldi, La Push, Monterey, Port Orford, Port San Luis, Port Townsend, San Diego, San Francisco Bay, Santa Barbara, Santa Monica, Taholah.
      https://www.ngdc.noaa.gov/mgg/coastal/coastal.html
      The following datasets were used to fill in gaps in coverage of NOAA’s Coastal DEMs:
      Combined Bathymetry and Topography DEM of Western Washington State (October 2000): https://www.ocean.washington.edu/data/pugetsound/psdem2000.html
      California State Waters Map Series Data Catalog, from the California Seafloor Mapping Program (CSMP):  Fort Ross and Salt Point https://pubs.usgs.gov/ds/781/
      Central California, CA 1 arc-second MHW DEM, from NOAA’s National Geophysical Data Center (NGDC). https://www.ngdc.noaa.gov/dem/squareCellGrid/download/739
      US Coastal Relief Model – Southern California Version 2, from NOAA’s National Geophysical Data Center (NGDC). https://www.ngdc.noaa.gov/mgg/coastal/grddas06/grddas06v2.htm
      PSMFC GIS staff applied a smoothing algorithm to the data (Smoothing Algorithm = PAEK, Tolerance = 50 meters) in order to produce a more natural appearing depth contour.

Source medium namehard disk
Source citation ▼►

TitleMinus 4-Meter MLLW Depth Contour
Creation date2016-11-21 00:00:00
Responsible party

Individual's nameHiroo Imaki
Organization's nameNOAA Northwest Fisheries Science Center
Contact's positionGIS Specialist
Contact's roleoriginator

Contact information ▼►

Address

Type
e-mail address Hiroo.imaki@pacificspatial.com

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Extent of the source data

Description

      The extent of the Minus 4-Meter MLLW Depth Contour layer covers the entire contiguous West Coast of the United States, but the data is missing from a few select estuaries.  Drayton Harbor (WA), the Columbia River (WA/OR), the Sacramento-San Joaquin Delta (CA), Los Angeles Harbor (CA), Anaheim Bay (CA), Newport Bay (CA), and Mission Bay (CA) estuaries all have missing depth data within part of the estuary.

Geographic extent

Bounding rectangle

West longitude-124.79
East longitude-117.10
South latitude32.53
North latitude49.0
Extent contains the resourceYes

Hide Source data ▲
Source data
▼ ►

Description

      The Oregon Coastal Management Program’s (OCMP) Oregon Estuary Project of Special Merit produced estuary and shorelands habitat map information, using the federally adopted Coastal and Marine Ecological Classification Standard (CMECS) version 4.0.  For detailed documentation on the OCMP estuary mapping project, please visit http://www.coastalatlas.net/documents/cmecs/EPSM_CoreGISMethods.pdf.

Source medium namehard disk
Source citation ▼►

TitleCMECS Estuarine Aquatic Setting v.0.4.1, OCMP, 2014 / CMECS Estuarine Biotic Component v.0.4.1, OCMP, 2014
Publication date2014-05-01 00:00:00
Edition1.0
Edition date2014-05-01
Collection titleOregon Coastal Management Program’s Estuary Project of Special Merit
Other citation details

      This data source and associated documentation was utilized extensively throughout the development of this dataset, and served as an invaluable reference layer for applying this methodology to Washington and California.  PMEP is thankful to OCMP staff for their pioneering work to map Oregon’s estuaries using the CMECS standard, and for their assistance with helping PMEP expand this important resource to the U.S. West Coast.

Responsible party

Individual's nameAndy Lanier
Organization's nameOregon Coastal Management Program
Contact's positionMarine Affairs Coordinator
Contact's rolepoint of contact

Contact information ▼►

Address

Type
e-mail address andy.lanier@state.or.us

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Resource location online

Location http://www.coastalatlas.net/documents/cmecs/EPSM_CoreGISMethods.pdf.
NameEPSM Core GIS Methods
Function performedinformation

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Extent of the source data

Description

      The estuary extent for most Oregon estuaries in PMEP’s estuary extent layer is based on a dissolved merge of the Aquatic Setting and Biotic Component layers from OCMP, which have some minor differences in extent.  This data source is used for all estuaries within Oregon which were mapped as part of Version 0.4.1 of Oregon’s CMECS estuary mapping project.  The “Data_Source” field identifies OCMP as the source for these estuary extents.

Geographic extent

Bounding rectangle

West longitude-124.77
East longitude-123.59
South latitude41.98
North latitude46.06
Extent contains the resourceYes

Temporal extent

Beginning date2000-01-01 00:00:00
Ending date2012-12-31 00:00:00

Hide Source data ▲
Source data
▼ ►

Description

      The data processing steps required in order to delineate estuary extents established contiguous polygons dissolved from various source inputs, representing the current and historical estuary extent.  Certain estuaries coalesce into a single polygon from the various source inputs, but have been categorized and inventoried as separate, unique estuaries.   A line layer, “PMEP Estuary Split Lines”, was created in order to split these larger polygons into single estuary extents.
      One example of an estuary “complex” requiring many dividing lines is the area from Cabrillo Marina to the Bolsa Chica Lowlands in Southern California.  This area, encompassing both the Long Beach and Los Angeles Harbors, is divided into 11 individual estuaries from one large polygon, using this layer.
      Source geometry utilized in creating this splitting layer include the Watershed Boundary Dataset (USGS), regional data layers (Columbia River Estuary Ecosystem Classification, California Bay-Delta regions), shoreline data, and visual/heads-up digitizing.

Source medium namehard disk
Source citation ▼►

TitlePMEP Estuary Split Lines (unpublished)
Creation date2016-07-01 00:00:00
Responsible party

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's roleoriginator

Contact information ▼►

Address

Type
e-mail address gis@psmfc.org

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Extent of the source data

Geographic extent

Bounding rectangle

West longitude-124.48
East longitude-117.24
South latitude32.75
North latitude48.58
Extent contains the resourceYes

Hide Source data ▲
Source data
▼ ►

Description

      The link between the estuary extent polygon layer, which is dissolved from various source inputs, and the estuary point layer, requires a companion layer to select these polygons and associate them with the point layer and estuary ID.  The “Estuary Extent Selector” polygon layer was created to establish and maintain this link.  This layer also establishes which estuary areas are considered part of a specific estuary, and which are considered as part of other, “unassociated” extents.  This layer is utilized in the publishing of the estuary extent layer.
      Source geometry for this layer between contiguous estuaries is from the PMEP Estuary Split Lines layer.  The other areas of geometry are based on general areas of contiguous or larger estuary extent polygons, and are used to identify and code estuary extent areas within the polygons.  In some cases, this geometry has been modified to include or exclude estuary extent areas from association with a particular estuary system, based on expert review.

Source medium namehard disk
Source citation ▼►

TitlePMEP Estuary Extent Selector (unpublished)
Creation date2016-07-01 00:00:00
Responsible party

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's roleoriginator

Contact information ▼►

Address

Type
e-mail address gis@psmfc.org

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Extent of the source data

Description

      The extent of this layer covers all estuary extents as inventoried by PMEP.  The simple geometry is used to select, and/or clip other datasets, including the Estuary Extent Source layer. No areas of these polygons overlap.

Geographic extent

Bounding rectangle

West longitude-124.72
East longitude-117.06
South latitude32.53
North latitude49.01
Extent contains the resourceYes

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Source data
▼ ►

Description

      The PMEP Regions layer depicts ecoregions, used to categorize PMEP data into broad groups, reflecting differences in geography and large-scale marine processes affecting the estuaries.  The original basis for these regions was the Marine Ecoregions of the World (MEOW) dataset from the World Wildlife Fund and The Nature Conservancy.  This dataset was modified to capture inland watershed areas based on the Watershed Boundary Dataset, and some names were altered to commonly used West Coast names.  Additionally, the boundary was altered between the Washington, Oregon, Northern California Coast Region (“Oregon, Washington, Vancouver Coast and Shelf” in MEOW dataset), and the Salish Sea Region (“Puget Trough/Georgia Basin” in MEOW), to include all estuaries along the Strait of Juan Fuca within the Salish Sea Region.

Source medium namehard disk
Source citation ▼►

TitlePMEP Regions
Creation date2016-10-03 00:00:00
Responsible party

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's rolepoint of contact

Contact information ▼►

Address

Type
e-mail address gis@psmfc.org

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Extent of the source data

Description

      The seaward boundary of the layer is based on the 200 meter depth contour and international maritime boundaries.  The inland boundary is based on watersheds which drain towards an estuary.  In some cases (e.g. the Sacramento-San Joaquin Delta, the Columbia River), the inland boundary is based on HUC 10 watersheds which overlap the mapped estuaries. Divisions within the PMEP Region layer are based on watershed drainage (WBD) on land, and on the WBD and straight connecting lines for marine boundaries.

Geographic extent

Bounding rectangle

West longitude-125.6
East longitude-116.2
South latitude32.5
North latitude49.0
Extent contains the resourceYes

Hide Source data ▲
Hide Lineage ▲

## Distribution ▼►

Distributor ▼►

Contact information

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's rolepoint of contact

Contact information ▼►

Phone

Voice503-595-3100

Address

Typeboth
Delivery point205 SE Spokane St., Suite 100
CityPortland
Administrative areaOR
Postal code97202
CountryUS
e-mail address gis@psmfc.org

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Available format

NameFile Geodatabase Feature Class (Esri)
Version10.5.1
File decompression technique.zip

Transfer options

Units of distributionMB
Transfer size56
Online source

Locationhttps://psmfc.sharefile.com/d-sd5549256838430ba
Access protocolShareFile
NameWest Coast USA Current and Historical Estuary Extent
DescriptionWest Coast USA Current and Historical Estuary Extent (zipped file geodatabase, email registration required for download)
Function performeddownload

Transfer options

Online source

Locationhttps://honu.psmfc.org/server/rest/services/PMEP/West_Coast_USA_Current_and_Historical_Estuary_Extent/MapServer
Access protocolArcGIS REST API
NameWest Coast USA Current and Historical Estuary Extent
DescriptionThis layer represents the current and historical tidal wetlands, or estuary extent, for the West Coast of the contiguous United States.
Function performedinformation

Online source

Location http://psmfc.maps.arcgis.com/home/item.html?id=29d63729a5d64e74a9c300e71ca29034
Access protocolArcGIS Online
NameWest Coast USA Current and Historical Estuary Extent
DescriptionArcGIS Online desription page for the West Coast USA Current and Historical Estuary Extent
Function performedinformation

Transfer options

Online source

Location http://www.pacificfishhabitat.org/data/estuary-extents
Access protocolinternet
NamePMEP Estuary Extent web page
DescriptionWebsite for PMEP's Estuary Extent layer.
Function performedinformation

Hide Distributor ▲
Distribution format

* NameFile Geodatabase Feature Class

Transfer options

Online source

Location http://www.pacificfishhabitat.org/data/estuary-extents
Function performeddownload

Online source

Locationhttps://www.wildlife.ca.gov/Data/BIOS
Function performedinformation

Online source

Location ftp://ftp.wildlife.ca.gov/BDB/GIS/BIOS/Public_Datasets/2700_2799/ds2792.zip
Function performeddownload

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## Fields ▼►

Details for object ds2792 ▼►

* TypeFeature Class
Row count444
Definition

      This layer represents the current and historical tidal wetlands, or estuary extent, for the West Coast of the contiguous United States.  Note that estuaries were included based on their current or future potential to provide habitat for fish species.

Definition source

      PMEP

Field OBJECTID
▼►

* AliasOBJECTID
* Data typeOID
* Width4
* Precision0
* Scale0
* Field description

      Internal feature number.

* Description source

      Esri

* Description of values

      Sequential unique whole numbers that are automatically generated.

Hide Field OBJECTID ▲
Field Shape
▼►

* AliasShape
* Data typeGeometry
* Width0
* Precision0
* Scale0
* Field description

      Feature geometry.

* Description source

      Esri

* Description of values

      Coordinates defining the features.

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Field Extent_Type
▼►

AliasExtent Type
* Data typeString
* Width50
* Precision0
* Scale0
Field description

      The Extent_Type field categorizes the estuary layer into categories which establish which estuarine extent areas are part of PMEP’s inventory, and which are not (unassociated extents).  Additionally, areas representing the recent variability in the location of the estuary mouths (“estuary mouth connection areas”), are coded in this field and do not contribute to the measured extent of an estuary.

Description source

      PMEP

List of values

Valueapproximate extent of tidal wetlands
Descriptionhistorical or current estuary areas which are a part of PMEP's inventory
Enumerated domain value definition sourcePMEP

Valueestuary mouth connection area
Descriptionareas representing the recent variability in the location of the estuary mouths (note: these areas do not contribute to the measured extent of an estuary and are for reference purposes only)
Enumerated domain value definition sourcePMEP

Valueunassociated extent
Descriptionareas of historical or current estuary extent which are not associated with PMEP’s inventory
Enumerated domain value definition sourcePMEP

Hide Field Extent_Type ▲
Field Data_Source
▼►

AliasData Source
* Data typeString
* Width255
* Precision0
* Scale0
Field description

      The organization, or organizations, whom provided spatial data for the estuary extent.

Description source

      PMEP

List of values

ValueOCMP
DescriptionOregon Coastal Management Program (Oregon Department of Land Conservation and Development)
Enumerated domain value definition sourcePMEP

ValuePMEP
DescriptionPacific Marine and Estuarine Fish Habitat Partnership
Enumerated domain value definition sourcePMEP

ValuePMEP/PC Trask
DescriptionPacific Marine and Estuarine Fish Habitat Partnership and PC Trask and Associates
Enumerated domain value definition sourcePMEP

Hide Field Data_Source ▲
Field PMEP_EstuaryID
▼►

AliasPMEP EstuaryID
* Data typeSmallInteger
* Width2
* Precision0
* Scale0
Field description

      unique identifier for each estuary included in PMEP estuary inventory

Description source

      PMEP

List of values

Value1000 - 1999
DescriptionID range for ‘Salish Sea’ PMEP Region estuaries. These IDs were originally assigned in a general clock-wise order, from Points Roberts (1000) to Sail River (1165).
Enumerated domain value definition sourcePMEP

Value2000 - 2999
DescriptionID range for ‘Washington, Oregon, Northern California Coast’ PMEP Region estuaries. These IDs were originally assigned in a north to south order, from the Waatch River in Washington (2000) to the Bear River in Northern California (2109).
Enumerated domain value definition sourcePMEP

Value3000 - 3999
DescriptionID range for ‘Central California’ PMEP Region estuaries. These IDs were originally assigned in a north to south order within California, from McNutt Gulch (3000) to Jalama Creek (3106).
Enumerated domain value definition sourcePMEP

Value4000 - 4999
DescriptionID range for ‘Southern California Bight’ PMEP Region estuaries. These IDs were originally assigned in a north to south order within Southern California, from Canada de la Gaviota Creek (4000) to the Tijuana River (4060).
Enumerated domain value definition sourcePMEP

Hide Field PMEP_EstuaryID ▲
Field Count_Polygons
▼►

AliasCount Polygons
* Data typeSmallInteger
* Width2
* Precision0
* Scale0
Field description

      This value represents the number of individual polygons which contribute to the estuary extent.  Note that the final estuary extent layer is a multi-part feature type, and that many of the estuaries consist of many individual polygons.  This value does not represent the number of PMEP Estuary Extent Source polygons, but represents the number of dissolved individual polygons which are derived from those data.

Description source

      PMEP

Description of values

      These data are calculated as part of the estuary publishing process and are based on feature geometry representing the estuary extent.

Hide Field Count_Polygons ▲
Field Estuary_Name
▼►

AliasEstuary Name
* Data typeString
* Width150
* Precision0
* Scale0
Field description

      The name of the estuary.  Values in this field were generally obtained from the names in the “An Inventory and Classification of U.S. West Coast Estuaries” (Heady, et. al, 2014), although there are exceptions.  Estuaries added to the PMEP estuary list utilized official or commonly used estuary names, the name of the major river or creek connecting with the estuary, or used local landmarks in the absence of another name source.

Description source

      PMEP

Description of values

      These data are based on geographic names.

Hide Field Estuary_Name ▲
Field Link
▼►

* AliasLink
* Data typeString
* Width180
* Precision0
* Scale0
Field description

      "PMEP EstuaryID"_"Estuary Name"  This unique key is used to link various data across the PMEP spatial data system.

Description source

      PMEP

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Field PMEP_Region
▼►

AliasPMEP Region
* Data typeString
* Width50
* Precision0
* Scale0
Field description

      The PMEP Region (or ecoregion) which the estuary is located in.

Description source

      PMEP

List of values

ValueSalish Sea
DescriptionAll watersheds draining into Salish Sea from within Washington State, which includes the estuarine/marine areas of Puget Sound and the Strait of Juan de Fuca out to Cape Flattery within the U.S. Maritime Boundary.
Enumerated domain value definition sourcePMEP

ValueWashington, Oregon, Northern California Coast
DescriptionAll Watershed Boundary Dataset (WBD) Subbasins draining into the Pacific Ocean from within Washington State (excluding the Salish Sea), Oregon and Northern California, from Cape Flattery (Washington) south to Bear River in Northern California. The exception to this standard is the inland extent of the Columbia River/Willamette River, which is based on WBD watersheds (HUC 10) overlapping the mapped estuary extent. The seaward extent of this region is based on a 200 meter depth contour.
Enumerated domain value definition sourcePMEP

ValueCentral California
DescriptionAll Watershed Boundary Dataset (WBD) Subbasins draining into the Pacific Ocean from within California, from Bear River in Northern California south to Jalama Creek, near Point Conception California. The exception to this standard is the inland extent of the Sacramento-San Joaquin Delta, which is based on WBD watersheds (HUC 10) overlapping the mapped estuary extent. The seaward extent of this region is based on a 200 meter depth contour.
Enumerated domain value definition sourcePMEP

ValueSouthern California Bight
DescriptionAll Watershed Boundary Dataset (WBD) Subbasins draining into the Pacific Ocean from within Southern California, from Jalama Creek, near Point Conceoption, south to the U.S.-Mexico border. The seaward extent of this region is based on a 200 meter depth contour.
Enumerated domain value definition sourcePMEP

Hide Field PMEP_Region ▲
Field CMECS_Class
▼►

AliasCMECS Physiographic Setting
* Data typeString
* Width50
* Precision0
* Scale0
Field description

      Landscape-level geomorphological features from the coast to mid-ocean spreading centers.  These large features can cross tectonic settings, and they can be delineated at a scale of 1:1,000,000 (or greater) using bathymetric maps and other remote sensing data.  Each setting will normally contain a wide variety of the smaller geoform features.

Description source

      Coastal and Marine Ecological Classification Standard (CMECS), Federal Geographic Data Committee, 2012.

List of values

ValueEmbayment/Bay
DescriptionA water body with some level of enclosure by land at different spatial scales. These can be wide, curving indentations in the coast, arms of the sea, or bodies of water almost surrounded by land. These features can be small—with considerable freshwater and terrestrial influence—or large and generally oceanic in character.
Enumerated domain value definition sourceCMECS

ValueLagoonal Estuary
DescriptionThis class of estuary tends to be shallow, highly enclosed, and have reduced exchange with the ocean. They often experience high evaporation, and they tend to be quiescent in terms of wind, current, and wave energy. Lagoonal estuaries usually have a very high surface-to-volume ratio, a low-to-moderate watershed-to-water-area ratio, and can have a high wetland-to-water ratio. The flushing times tend to be long relative to riverine estuaries and embayments because the restricted exchange with the marine-end member and the reduced river input lengthen residence times. As such, there tends to be more benthic-pelagic interaction, enhanced by generally shallow bathymetry. Additionally, exchange with surrounding landscapes (often riparian wetland and palustrine systems) tends to be enhanced and more highly coupled than in other types of estuaries. Occasionally, a lagoon may be produced by the temporary sealing of a river estuary by a barrier. Such lagoons are usually seasonal and exist until the river breaches the barrier; these lagoons occur in regions of low or sporadic rainfall.
Enumerated domain value definition sourceCMECS

ValueMajor River Delta
DescriptionThe nearly flat, alluvial tract of land at the mouth of a river, which commonly forms a triangular or fan-shaped plain. It is crossed by many distributaries, and the delta is the result of sediment accumulation from the river. Deltas are distinguished from alluvial fans by their flatter slope. Examples of this feature type include the Mississippi Delta, the Nile Delta, and the Ganges Delta. All deltas are dynamic areas of mixed-water flow and salinity.
Enumerated domain value definition sourceCMECS

ValueRiverine Estuary
DescriptionThis class of estuary tends to be linear and seasonally turbid (especially in upper reaches), and it can be subjected to high current speeds. These estuaries are sedimentary and depositional, so they may be associated with a delta, bar, barrier island, and other depositional features. These estuaries also tend to be highly flushed (with a wide and variable salinity range) and seasonally stratified. Riverine estuaries have moderate surface-to-volume ratios with a high watershed-to-water-area ratio—and they can have very high wetland-to-water-area ratios as well. These estuaries are often characterized by a V-shaped channel configuration and a salt wedge.
Enumerated domain value definition sourceCMECS

Hide Field CMECS_Class ▲
Field Shape_Length
▼►

* AliasShape_Length
* Data typeDouble
* Width8
* Precision0
* Scale0
* Field description

      Length of feature in internal units.

* Description source

      Esri

* Description of values

      Positive real numbers that are automatically generated.

Hide Field Shape_Length ▲
Field Shape_Area
▼►

* AliasShape_Area
* Data typeDouble
* Width8
* Precision0
* Scale0
* Field description

      Area of feature in internal units squared.

* Description source

      Esri

* Description of values

      Positive real numbers that are automatically generated.

Hide Field Shape_Area ▲
Field Estuary_Hectares
▼►

AliasHectares
Data typeDouble
Width8
* Precision0
* Scale0
Field description

      The area of the current and historical tidal wetlands of the estuary, in hectares, as calculated using Custom West Coast Albers projection.  Note that “mouth connection area” extents are not included in this value.

Description source

      PMEP

Description of values

      These data are calculated based on the feature geometry.

Hide Field Estuary_Hectares ▲

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## References ▼►

Aggregate Information

Association typecross reference
Initiative typestudy
Aggregate resource name ▼►

TitleStrategies for Nearshore Protection and Restoration in Puget Sound. Puget Sound Nearshore Report No. 2012-01
Publication date2012-03-01 00:00:00
Other citation details

      Accessed 6/3/2016

Resource location online

Location http://www.pugetsoundnearshore.org/technical_papers/psnerp_strategies_maps.pdf
NameStrategies for Nearshore Protection and Restoration in Puget Sound
DescriptionPSNERP Technical Report 2012-01
Function performedinformation

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Aggregate Information

Association typecross reference
Initiative typestudy
Aggregate resource name ▼►

TitleUnited States Army Corps of Engineers 50% Annual Exceedance Probability Stage for Survival Benefit Unit for the Lower Columbia River Estuary
Alternate titlesERTG 2012-01, Rev 1
Revision date2013-10-31 00:00:00
Creation date2011-01-01 00:00:00
Other citation details

      Prepared for the Bonneville Power Administration, U.S. Army Corps of Engineers, and NOAA Fisheries.  Portland, Oregon.

Responsible party

Individual's nameAlex McManus
Organization's namePC Trask and Associates
Contact's positionProject Manager
Contact's rolepoint of contact

Contact information ▼►

Address

Type
Delivery point1220 SW Morrison St, Suite 805
CityPortland
Administrative areaOR
Postal code97205
CountryUS
e-mail address alex@pctrask.com

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Aggregate Information

Association typecross reference
Aggregate resource name ▼►

TitleCoastal and Marine Ecological Classification Standard
Alternate titlesFGDC-STD-18-2012
Publication date2012-06-01 00:00:00
EditionJune 2012
Resource location online

Locationhttps://coast.noaa.gov/data/digitalcoast/pdf/cmecs.pdf
NameCostal and Marine Ecological Classification Standard
Function performedinformation

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Aggregate Information

Association typesource
Aggregate resource name ▼►

TitleAn Inventory and Classification of U.S. West Coast Estuaries
Publication date2014-01-01 00:00:00
Other citation details

      Citation: Heady, W.N., K. O’Connor, J. Kassakian, K. Doiron, C. Endris, D. Hudgens, R. P. Clark, J. Carter, and M. G. Gleason. 2014. An Inventory and Classification of U.S. West Coast Estuaries. The Nature Conservancy, Arlington, VA. 81pp.

Responsible party

Individual's nameWalter Heady
Organization's nameThe Nature Conservancy
Contact's positionCoastal Marine Ecologist
Contact's roleauthor

Contact information ▼►

Phone

Voice831-333-2044

Address

Typeboth
Delivery point99 Pacific Street, Suite 200G
CityMonterey
Administrative areaCA
Postal code93940
e-mail address wheady@tnc.org

Hide Contact information ▲

Resource location online

Location http://pmep.psmfc.org/wp-content/uploads/2017/09/wc_estuaryinventory_final_report_jan15_2015.pdf
Function performedinformation

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Aggregate Information

Association typesource
Aggregate resource name ▼►

TitleCore CMECS GIS Processing Methods, Oregon Estuary Project of Special Merit
Publication date2014-08-11 00:00:00
Other citation details

      Citation: Lanier, A., T. Haddad, L. Mattison, and L. Brophy. 2014. Core CMECS GIS processing methods, Oregon Estuary Project of Special Merit. Oregon Coastal Management Program, Oregon Department of Land Conservation and Development, Salem, OR. Accessed 27 July 2016 at http://www.coastalatlas.net/documents/cmecs/EPSM_CoreGISMethods.pdf.

Responsible party

Individual's nameAndy Lanier
Organization's nameOregon Coastal Management Program
Contact's positionMarine Affairs Coordinator
Contact's rolepoint of contact

Contact information ▼►

Address

Type
e-mail address andy.lanier@state.or.us

Hide Contact information ▲

Resource location online

Location http://www.coastalatlas.net/documents/cmecs/EPSM_CoreGISMethods.pdf
NameCore CMECS GIS Processing Methods, Oregon Estuary Project of SPecial Merit
Function performedinformation

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Aggregate Information

Association typesource
Aggregate resource name ▼►

TitleNational Wetland Inventory
Publication date2015-05-10 00:00:00
Other citation details

      Citation: U.S. Fish and Wildlife Service.  5/10/2015.  National Wetlands Inventory website.  U.S. Department of the Interior, Fish and Wildlife Service, Washington, D.C.  http://www.fws.gov/wetlands/

Resource location online

Location http://www.fws.gov/wetlands/
NameNational Wetlands Inventory website
Function performedinformation

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## Metadata Details ▼►

* Metadata languageEnglish (UNITED STATES)
Metadata character setutf8 - 8 bit UCS Transfer Format
Metadata identifierF7278C2C-6CA4-4D21-B44B-8CB17A7C3952
Function of the resourcedownload
Scope of the data described by the metadata *dataset
Scope name *dataset
Last update2018-02-15
ArcGIS metadata properties

Metadata formatArcGIS 1.0
Metadata styleFGDC CSDGM Metadata
Standard or profile used to edit metadataFGDC
Created in ArcGIS for the item2018-09-07 14:47:32
Last modified in ArcGIS for the item2018-09-12 15:17:24
Automatic updates

Have been performedYes
Last update2018-09-12 15:17:24

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## Metadata Contacts ▼►

Metadata contact

Individual's namePSMFC GIS
Organization's namePacific States Marine Fisheries Commission
Contact's positionGIS
Contact's roleoriginator

Contact information ▼►

Phone

Voice503-595-3100

Address

Typeboth
Delivery point205 SE Spokane St., Suite 100
CityPortland
Administrative areaOR
Postal code97202
CountryUS
e-mail address gis@psmfc.org

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Hide Metadata Contacts ▲

## Metadata Maintenance ▼►

Maintenance

Update frequencyas needed

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## Metadata Constraints ▼►

Constraints

Limitations of use

                                This product is for informational purposes only and is not intended for navigational, legal, engineering, or surveying purposes; it is provided with the understanding that conclusions drawn from the information are the responsibility of the user.

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## Thumbnail and Enclosures ▼►

Thumbnail

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## FGDC Metadata (read-only) ▼►

## Entities and Attributes ▼►

  Detailed Description
    Entity Type
      Entity Type Label ds2792
      Entity Type Definition
        This layer represents the current and historical tidal wetlands, or estuary extent, for the West Coast of the contiguous United States. Note that estuaries were included based on their current or future potential to provide habitat for fish species.
      Entity Type Definition Source PMEP
    Attribute
      Attribute Label OBJECTID
      Attribute Definition
        Internal feature number.
      Attribute Definition Source Esri
      Attribute Domain Values
        Unrepresentable Domain
          Sequential unique whole numbers that are automatically generated.
    Attribute
      Attribute Label Shape
      Attribute Definition
        Feature geometry.
      Attribute Definition Source Esri
      Attribute Domain Values
        Unrepresentable Domain
          Coordinates defining the features.
    Attribute
      Attribute Label Extent_Type
      Attribute Definition
        The Extent_Type field categorizes the estuary layer into categories which establish which estuarine extent areas are part of PMEP’s inventory, and which are not (unassociated extents). Additionally, areas representing the recent variability in the location of the estuary mouths (“estuary mouth connection areas”), are coded in this field and do not contribute to the measured extent of an estuary.
      Attribute Definition Source PMEP
      Attribute Domain Values
        Enumerated Domain
          Enumerated Domain Value approximate extent of tidal wetlands
          Enumerated Domain Value Definition
            historical or current estuary areas which are a part of PMEP's inventory
          Enumerated Domain Value Definition Source
            PMEP
        Enumerated Domain
          Enumerated Domain Value estuary mouth connection area
          Enumerated Domain Value Definition
            areas representing the recent variability in the location of the estuary mouths (note: these areas do not contribute to the measured extent of an estuary and are for reference purposes only)
          Enumerated Domain Value Definition Source
            PMEP
        Enumerated Domain
          Enumerated Domain Value unassociated extent
          Enumerated Domain Value Definition
            areas of historical or current estuary extent which are not associated with PMEP’s inventory
          Enumerated Domain Value Definition Source
            PMEP
    Attribute
      Attribute Label Data_Source
      Attribute Definition
        The organization, or organizations, whom provided spatial data for the estuary extent.
      Attribute Definition Source PMEP
      Attribute Domain Values
        Enumerated Domain
          Enumerated Domain Value OCMP
          Enumerated Domain Value Definition
            Oregon Coastal Management Program (Oregon Department of Land Conservation and Development)
          Enumerated Domain Value Definition Source
            PMEP
        Enumerated Domain
          Enumerated Domain Value PMEP
          Enumerated Domain Value Definition
            Pacific Marine and Estuarine Fish Habitat Partnership
          Enumerated Domain Value Definition Source
            PMEP
        Enumerated Domain
          Enumerated Domain Value PMEP/PC Trask
          Enumerated Domain Value Definition
            Pacific Marine and Estuarine Fish Habitat Partnership and PC Trask and Associates
          Enumerated Domain Value Definition Source
            PMEP
    Attribute
      Attribute Label PMEP_EstuaryID
      Attribute Definition
        unique identifier for each estuary included in PMEP estuary inventory
      Attribute Definition Source PMEP
      Attribute Domain Values
        Enumerated Domain
          Enumerated Domain Value 1000 - 1999
          Enumerated Domain Value Definition
            ID range for ‘Salish Sea’ PMEP Region estuaries. These IDs were originally assigned in a general clock-wise order, from Points Roberts (1000) to Sail River (1165).
          Enumerated Domain Value Definition Source
            PMEP
        Enumerated Domain
          Enumerated Domain Value 2000 - 2999
          Enumerated Domain Value Definition
            ID range for ‘Washington, Oregon, Northern California Coast’ PMEP Region estuaries. These IDs were originally assigned in a north to south order, from the Waatch River in Washington (2000) to the Bear River in Northern California (2109).
          Enumerated Domain Value Definition Source
            PMEP
        Enumerated Domain
          Enumerated Domain Value 3000 - 3999
          Enumerated Domain Value Definition
            ID range for ‘Central California’ PMEP Region estuaries. These IDs were originally assigned in a north to south order within California, from McNutt Gulch (3000) to Jalama Creek (3106).
          Enumerated Domain Value Definition Source
            PMEP
        Enumerated Domain
          Enumerated Domain Value 4000 - 4999
          Enumerated Domain Value Definition
            ID range for ‘Southern California Bight’ PMEP Region estuaries. These IDs were originally assigned in a north to south order within Southern California, from Canada de la Gaviota Creek (4000) to the Tijuana River (4060).
          Enumerated Domain Value Definition Source
            PMEP
    Attribute
      Attribute Label Count_Polygons
      Attribute Definition
        This value represents the number of individual polygons which contribute to the estuary extent. Note that the final estuary extent layer is a multi-part feature type, and that many of the estuaries consist of many individual polygons. This value does not represent the number of PMEP Estuary Extent Source polygons, but represents the number of dissolved individual polygons which are derived from those data.
      Attribute Definition Source PMEP
      Attribute Domain Values
        Unrepresentable Domain
          These data are calculated as part of the estuary publishing process and are based on feature geometry representing the estuary extent.
    Attribute
      Attribute Label Estuary_Name
      Attribute Definition
        The name of the estuary. Values in this field were generally obtained from the names in the “An Inventory and Classification of U.S. West Coast Estuaries” (Heady, et. al, 2014), although there are exceptions. Estuaries added to the PMEP estuary list utilized official or commonly used estuary names, the name of the major river or creek connecting with the estuary, or used local landmarks in the absence of another name source.
      Attribute Definition Source PMEP
      Attribute Domain Values
        Unrepresentable Domain
          These data are based on geographic names.
    Attribute
      Attribute Label Link
      Attribute Definition
        "PMEP EstuaryID"_"Estuary Name" This unique key is used to link various data across the PMEP spatial data system.
      Attribute Definition Source PMEP
    Attribute
      Attribute Label PMEP_Region
      Attribute Definition
        The PMEP Region (or ecoregion) which the estuary is located in.
      Attribute Definition Source PMEP
      Attribute Domain Values
        Enumerated Domain
          Enumerated Domain Value Salish Sea
          Enumerated Domain Value Definition
            All watersheds draining into Salish Sea from within Washington State, which includes the estuarine/marine areas of Puget Sound and the Strait of Juan de Fuca out to Cape Flattery within the U.S. Maritime Boundary.
          Enumerated Domain Value Definition Source
            PMEP
        Enumerated Domain
          Enumerated Domain Value Washington, Oregon, Northern California Coast
          Enumerated Domain Value Definition
            All Watershed Boundary Dataset (WBD) Subbasins draining into the Pacific Ocean from within Washington State (excluding the Salish Sea), Oregon and Northern California, from Cape Flattery (Washington) south to Bear River in Northern California. The exception to this standard is the inland extent of the Columbia River/Willamette River, which is based on WBD watersheds (HUC 10) overlapping the mapped estuary extent. The seaward extent of this region is based on a 200 meter depth contour.
          Enumerated Domain Value Definition Source
            PMEP
        Enumerated Domain
          Enumerated Domain Value Central California
          Enumerated Domain Value Definition
            All Watershed Boundary Dataset (WBD) Subbasins draining into the Pacific Ocean from within California, from Bear River in Northern California south to Jalama Creek, near Point Conception California. The exception to this standard is the inland extent of the Sacramento-San Joaquin Delta, which is based on WBD watersheds (HUC 10) overlapping the mapped estuary extent. The seaward extent of this region is based on a 200 meter depth contour.
          Enumerated Domain Value Definition Source
            PMEP
        Enumerated Domain
          Enumerated Domain Value Southern California Bight
          Enumerated Domain Value Definition
            All Watershed Boundary Dataset (WBD) Subbasins draining into the Pacific Ocean from within Southern California, from Jalama Creek, near Point Conceoption, south to the U.S.-Mexico border. The seaward extent of this region is based on a 200 meter depth contour.
          Enumerated Domain Value Definition Source
            PMEP
    Attribute
      Attribute Label CMECS_Class
      Attribute Definition
        Landscape-level geomorphological features from the coast to mid-ocean spreading centers. These large features can cross tectonic settings, and they can be delineated at a scale of 1:1,000,000 (or greater) using bathymetric maps and other remote sensing data. Each setting will normally contain a wide variety of the smaller geoform features.
      Attribute Definition Source Coastal and Marine Ecological Classification Standard (CMECS), Federal Geographic Data Committee, 2012.
      Attribute Domain Values
        Enumerated Domain
          Enumerated Domain Value Embayment/Bay
          Enumerated Domain Value Definition
            A water body with some level of enclosure by land at different spatial scales. These can be wide, curving indentations in the coast, arms of the sea, or bodies of water almost surrounded by land. These features can be small—with considerable freshwater and terrestrial influence—or large and generally oceanic in character.
          Enumerated Domain Value Definition Source
            CMECS
        Enumerated Domain
          Enumerated Domain Value Lagoonal Estuary
          Enumerated Domain Value Definition
            This class of estuary tends to be shallow, highly enclosed, and have reduced exchange with the ocean. They often experience high evaporation, and they tend to be quiescent in terms of wind, current, and wave energy. Lagoonal estuaries usually have a very high surface-to-volume ratio, a low-to-moderate watershed-to-water-area ratio, and can have a high wetland-to-water ratio. The flushing times tend to be long relative to riverine estuaries and embayments because the restricted exchange with the marine-end member and the reduced river input lengthen residence times. As such, there tends to be more benthic-pelagic interaction, enhanced by generally shallow bathymetry. Additionally, exchange with surrounding landscapes (often riparian wetland and palustrine systems) tends to be enhanced and more highly coupled than in other types of estuaries. Occasionally, a lagoon may be produced by the temporary sealing of a river estuary by a barrier. Such lagoons are usually seasonal and exist until the river breaches the barrier; these lagoons occur in regions of low or sporadic rainfall.
          Enumerated Domain Value Definition Source
            CMECS
        Enumerated Domain
          Enumerated Domain Value Major River Delta
          Enumerated Domain Value Definition
            The nearly flat, alluvial tract of land at the mouth of a river, which commonly forms a triangular or fan-shaped plain. It is crossed by many distributaries, and the delta is the result of sediment accumulation from the river. Deltas are distinguished from alluvial fans by their flatter slope. Examples of this feature type include the Mississippi Delta, the Nile Delta, and the Ganges Delta. All deltas are dynamic areas of mixed-water flow and salinity.
          Enumerated Domain Value Definition Source
            CMECS
        Enumerated Domain
          Enumerated Domain Value Riverine Estuary
          Enumerated Domain Value Definition
            This class of estuary tends to be linear and seasonally turbid (especially in upper reaches), and it can be subjected to high current speeds. These estuaries are sedimentary and depositional, so they may be associated with a delta, bar, barrier island, and other depositional features. These estuaries also tend to be highly flushed (with a wide and variable salinity range) and seasonally stratified. Riverine estuaries have moderate surface-to-volume ratios with a high watershed-to-water-area ratio—and they can have very high wetland-to-water-area ratios as well. These estuaries are often characterized by a V-shaped channel configuration and a salt wedge.
          Enumerated Domain Value Definition Source
            CMECS
    Attribute
      Attribute Label Shape_Length
      Attribute Definition
        Length of feature in internal units.
      Attribute Definition Source Esri
      Attribute Domain Values
        Unrepresentable Domain
          Positive real numbers that are automatically generated.
    Attribute
      Attribute Label Shape_Area
      Attribute Definition
        Area of feature in internal units squared.
      Attribute Definition Source Esri
      Attribute Domain Values
        Unrepresentable Domain
          Positive real numbers that are automatically generated.
    Attribute
      Attribute Label Estuary_Hectares
      Attribute Definition
        The area of the current and historical tidal wetlands of the estuary, in hectares, as calculated using Custom West Coast Albers projection. Note that “mouth connection area” extents are not included in this value.
      Attribute Definition Source PMEP
      Attribute Domain Values
        Unrepresentable Domain
          These data are calculated based on the feature geometry.

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