Identification_Information:
  Citation:
    Citation_Information:
      Originator: Defense Mapping Agency
      Originator: U.S. Geological Survey
      Originator: California Depatment of Fish and Game
      Publication_Date: 2001
      Title: DEM, 200 Meter Resolution (Elevation Values in Meters)
      Geospatial_Data_Presentation_Form: raster digital data
      Online_Linkage: \\Molib01\GIS_Library\Elevation\Land\DEMs\0200m_3ArcSec\dem200m_m
  Description:
    Abstract: Digital elevation model based on 1:250,000-scale/3-arc second data resampled to 200 meter resolution.  This is a statewide version that is clipped to the California state border.  Vertical units are in meters.
    Purpose: To assess elevation and related characteristics.
    Supplemental_Information:
      Converted to California Teale Albers NAD83 by the California Department of Fish and Game 

      -- BEGIN ORIGINAL METADATA - THIS INFORMATION MAY NOT BE CURRENT --

      CALIFORNIA DEPARTMENT OF FISH AND GAME (DFG) GIS METADATA

      Digital Elevation Model 
      200 Meter Resolution

      DATA TYPE: grid 
      METADATA DATE: 2001.11.15

      RELATED DATA:
      dem200m_m = statewide grid version
      dem200m_m.clr = colormap file
      dem200m_m.txt = metadata file
      dem200m_m_r<x><y> = DFG Regional clipped version of dem200m_m
      dem200m_m_r<x><y>.clr = colormap file
      dem200m_m_r<x><y>.txt = metadata file

      VARIABLE DEFINITION:
      r<x> = DFG Regional clipped dataset (i.e. r1 = Region 1) 
      <y> = optional clipping property, such as:
      w = watershed-based clip
      b = buffered clip


      DATASET DESCRIPTION:

      Dem200m_m is a digital elevation model (DEM) that was generated from
      1:250,000-scale (1 degree) DEMs developed by the Defense Mapping
      Agency (DMA) and distributed by the United States Geological Survey
      (USGS) in lattice format.  Source data spacing was 3-arc seconds,
      projected and resampled to 75 meters, and later resampled again
      to 200 meters.  Z-units are in meters.  The dataset can be used for 
      analytical or cartographic purposes.

      1-degree by 1-degree lattices were acquired directly from the USGS.
      The lattices were converted to grid format, mosaicked, projected, and
      resampled.  Projecting and resampling were performed using bilinear
      interpolation, which is appropriate for continuous data surfaces such
      as elevation.  State border clipping was performed using a outline
      version of the Teale Data Center "county" coverage (equivalent to 
      USGS 1:100,000 digital line graph).  A one-iteration low-pass filter
      was also applied to the data in an attempt to smooth anomolous 
      elevation values.  Some areas may contain erroneous data and/or
      exhibit striping or banding patterns.  It is important to remember 
      that the dataset is a model, with certain inaccuracies implied. 
      The California Department of Fish and Game makes no warranty as
      to the suitability of this dataset and any derivative datasets for
      any purpose.


      VIEWING TIPS:

      Grid as an image:
      The grid versions can be viewed with some GIS software programs
      as an image.  Some ESRI GIS programs allow you to view the grid
      with a predefined color ramp (the .clr file provides this 
      automatically; it must remain in the same workspace and retain 
      the same root name as the grid).  In ArcView 3.x, the NODATA 
      value color assignment can be made transparent from the image 
      legend editor - colormap dialog.  

      Grid as a grid:
      The grid versions can be viewed and queried using raster 
      assessment software such as ESRI's Spatial Analyst or Grid 
      extensions.  

      
      VITAL STATISTICS:
      
      Projection:                  Albers 
      Units:                       Meters
      Z Units:                     Meters
      1st Std. Parallel:           34 00 00 (34.0 degrees N)
      2nd Std. Parallel:           40 30 00 (40.5 degrees N)
      Longitude of Origin:         -120 00 00 (120.0 degrees W)
      Latitude of Origin:          00 00 00 (0.0 degrees)
      False Easting (x shift):     0
      False Northing (Y shift):    -4000000
      Source:                      Defense Mapping Agency / USGS
      One degree, 3-arc second digital
      elevation models - projected and
      resampled to 75 meters.
      Data Scale:                  1:250,000
      Data Resolution:             200 meters
      Source Horizontal Units:     Arc seconds (WGS72 or WGS84)
      Source Vertical Units:       Meters (NGVD29)
      Capture Method:              Digitized
      Source Accuracy:             Absolute horizontal accuracy
      (feature to datum) of 130 meters, 
      circular error at 90 percent  
      probability; and an absolute  
      vertical accuracy (feature to mean 
      sea level) of +/- 30 meters (see 
      USGS DEM data users guide).
      Note:  Since this data was
      later resampled, accuracy
      statements are less reliable.
      Conversion Software:         ARC/INFO 7.1.1
      Data Structure:              Grid cell-based
      Processing platform:         HP Unix workstation


      GRID DATA DICTIONARY:
      
      Structure for grid attribute table (DEM200M_M.VAT)

      ITEM NAME   DESCRIPTION
      VALUE       Elevation in meters
      COUNT       Frequency of VALUE


      ACCESS LIMITATIONS:

      None.  Any datasets described above in the RELATED DATA section
      are in the public domain and may be freely redistributed.
      

      UPDATES:

      2001.11 - Datasets renamed, metadata edited.

      
      DATA CONTACT:

      Will Patterson, DFG GIS Analyst
      916-323-1484, Email: wpatters@dfg.ca.gov

      -- END ORIGINAL METADATA --
  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: unknown
        Ending_Date: unknown
    Currentness_Reference: publication date
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None planned
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -124.504307
      East_Bounding_Coordinate: -113.496852
      North_Bounding_Coordinate: 42.068548
      South_Bounding_Coordinate: 32.423029
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: none
      Theme_Keyword: elevation
      Theme_Keyword: DEM
    Place:
      Place_Keyword_Thesaurus: none
      Place_Keyword: California
  Access_Constraints: none
  Use_Constraints: none
  Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 3; ESRI ArcCatalog 8.3.0.800
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Raster
  Raster_Object_Information:
    Raster_Object_Type: Grid Cell
    Row_Count: 5273
    Column_Count: 4570
    Vertical_Count: 1
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Map_Projection:
        Map_Projection_Name: Albers Conical Equal Area
        Albers_Conical_Equal_Area:
          Standard_Parallel: 34.000000
          Standard_Parallel: 40.500000
          Longitude_of_Central_Meridian: -120.000000
          Latitude_of_Projection_Origin: 0.000000
          False_Easting: 0.000000
          False_Northing: -4000000.000000
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: row and column
        Coordinate_Representation:
          Abscissa_Resolution: 200.000000
          Ordinate_Resolution: 200.000000
        Planar_Distance_Units: meters
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1983
      Ellipsoid_Name: Geodetic Reference System 80
      Semi-major_Axis: 6378137.000000
      Denominator_of_Flattening_Ratio: 298.257222
  Vertical_Coordinate_System_Definition:
    Altitude_System_Definition:
      Altitude_Datum_Name: National Geodetic Vertical Datum of 1929
      Altitude_Distance_Units: meters
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: dem200m_m
    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: Value
    Attribute:
      Attribute_Label: Count
Distribution_Information:
  Resource_Description: Downloadable Data
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Transfer_Size: 18.542
Metadata_Reference_Information:
  Metadata_Date: 20041025
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: California Department of Fish and Game
        Contact_Person: GIS Service Center
      Contact_Address:
      Contact_Electronic_Mail_Address: geodata@dfg.ca.gov
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile
