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This data set is a digital hydrologic unit boundary layer that is at the Subwatershed (12-digit) level. The original data set was developed by delineating the boundary lines on base USGS 1:24000...
Search relevance: 116.44 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 06:40 PM -
The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for delineation and resolution. It defines the areal...
Search relevance: 54.47 | Views last month: 84 | Catalog Last Checked: November 01, 2026 at 08:39 AM -
Hydrologic unit boundaries define the aerial extent of surface water drainage to a point. Hydrologic units through four levels were created in the 1970's and have been used extensively throughout...
Search relevance: 53.73 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 06:50 PM -
Hydrologic unit boundaries define the aerial extent of surface water drainage to a point. Hydrologic units through four levels were created in the 1970's and have been used extensively throughout...
Search relevance: 53.73 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 06:49 PM -
** Dataset containing HUC12 watershed boundaries that are within or intersect the boundary of a standard park AOA. ** The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection...
Search relevance: 51.95 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 07:28 PM -
This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. Hydrologic unit boundaries define the aerial extent of surface water drainage to a point. Hydrologic...
Search relevance: 46.16 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 06:48 PM -
The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage...
Search relevance: 37.89 | Views last month: 49 | Catalog Last Checked: September 10, 2026 at 09:17 PM -
The High Resolution National Hydrography Dataset Plus (NHDPlus HR) is an integrated datset of geospatial data layers, including the most current National Hydrography Dataset (NHD),...
Search relevance: 34.80 | Views last month: 8 | Catalog Last Checked: September 10, 2026 at 08:47 PM -
This dataset represents the Fish and Game Districts as described in the California Fish and Game Code, Division 8, Section 11000 - 11039. The districts are described in the Fish and Game Code in...
Search relevance: 21.92 | Views last month: 0 | Catalog Last Checked: October 24, 2026 at 08:43 PM
