Description of Parent Data Set: It is in a vector digital data structure, digitized from a USGS 1:500,000 scale map of the state of New Mexico. The source software used was ARC/INFO 5.0.1 and the conversion software ARC/INFO 7.0.3.
Intended use of data: These data are typically used as base data for other coverages, and should be used at scales of 1:500,000 and smaller. The data are intended for use as a general reference to the extent and boundaries of the hydrologic units in the Rio Puerco basin.
Related spatial and tabular data sets: Hydrologic Unit Map - Unclipped (hydro_unit_ucl); Rio Puerco Watershed Basin Boundary (wshed)
The 'hydcode' attribute contains 8-digit hydrologic or cataloging unit codes.
The 'reg' attribute contains water resources region numbers.
The 'subreg' attribute contains water resources subregion numbers.
The 'act-unit' attribute contains accounting unit numbers.
The 'cat_unit' attribute contains cataloging unit numbers.
For more information, please refer to <URL:http://water.usgs.gov/public/GIS/huc.html>.
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