LIBRARY       : CA
  LAYER NAME    : RWQCBDIST
  COVERAGE NAME : RWQCBNDA
  
  COVERAGE DESCRIPTION:

  The 'RWQCBDIST' layer shows the boundaries of the Regional Water Quality 
  Control Boards (9) in California. These district boundaries coincide
  with the boundaries of some of the hydrologic study areas delineated
  by the Department of Water Resources. See the 'GRDWATERBASIN' layer
  documentation for a fuller explanation of ground water basins and
  hydrologic study areas.

  VITAL STATISTICS:
  
  Datum:                         NAD27
  Projection:                    Albers
  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):      -4,000,000
  Source:                        Department of Water Resources
                                 Division of Mines and Geology
  Source Media:                  Mylar Maps
  Source Projection:             Lambert
  Source Units:                  Meters
  Source Scale:                  1:250,000
  Capture Method:                Hand digitized
  Conversion Software:           ARC/INFO Rev. 5.0.1
  Data Structure:                Vector
  ARC/INFO Coverage Type:        Polygon
  ARC/INFO Precision:            Double
  ARC/INFO Tolerances:           10 meters
  Number of Features:            9,224
  Layer Size:                    12.385 MB
  Last Updated:                  Summer 1994
  
  DATA DICTIONARY:
  
      DATAFILE NAME:   RWQCBNDA.PAT
      RECORD LENGTH:   56
  
  Non-standard POLYGON attribute fields:
  
  COLUMN   ITEM NAME        WIDTH    OUTPUT     TYPE     N.DEC  
  -------------------------------------------------------------
   25      REGION             2         2        I       -
   27      NAME              30        30        C       -
  
  NOTE:	Items common to all POLYGON coverages: AREA, PERIMETER,
  RWQCBNDA# and RWQCBNDA-ID are not described here.

  REGION = region number 

  NAME = region name

  DATA QUALITY ASSESSMENT:
  
  The following are subjective comments regarding this data.

  These district boundaries are formed from groundwater basin boundaries
  found in the 'GRDWATERBASIN' layer. The following comments come from the
  documentation for the 'GRDWATERBASIN' layer:

  "The State Water Resources Control Board traced selected formations from 
  250K USGS geologic maps onto mylar sheets. Because the USGS maps are 
  regarded as high-quality maps and because of the integrity of mylar, it 
  could be said that the resulting digitized coverage maintains good accuracy.
  Some of the tracings on the mylar, however, seemed a bit jagged and, in 
  some cases, problems with horizontal rectification between USGS quads and 
  the mylars were solved by repositioning tics. The coverage is, therefore, 
  only of moderate quality." 
 
  Coding of Board names and numbers is complete and accurate.
  
  DATA CONTACT:
  
  Contact Name:    Chet Egbert or Steve Flatt
  Contact's Phone: 916-263-1649 / 916-263-1499