All subwatersheds (HUC-6) within the state of Utah, and that intersect its boundary. A dataset of the entire United States was downloaded from the USDA NRCS website listed above in September, 2014. "Select by Location" was used to select all subwatersheds that are within the state of Utah boundary or that intersect it, and this selection was exported as a new dataset.
This data set is a complete digital hydrologic unit boundary layer to the Subwatershed (12-digit) 6th level for the entire United States. This data set consists of geo-referenced digital data and associated attributes created in accordance with the "FGDC Proposal, Version 1.0 - Federal Standards For Delineation of Hydrologic Unit Boundaries 3/01/02"(http://www.ftw.nrcs.usda.gov/huc_data.html). Polygons are attributed with hydrologic unit codes for 4th level sub-basins, 5th level watersheds, 6th level subwatersheds, name, size, downstream hydrologic unit, type of watershed, non-contributing areas and flow modification. Arcs are attributed with the highest hydrologic unit code for each watershed, linesource and a metadata reference file.