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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 system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Adjuntas County, Administrative watershed units, Administrative watershed units, Aguada County, Aguadilla County, All tags...
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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 system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Adjuntas County, Administrative watershed units, Administrative watershed units, Aguadilla County, Area of Complex Channels, All tags...
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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 system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Adjuntas County, Administrative watershed units, Administrative watershed units, Aguada County, Aguadilla County, All tags...
thumbnail
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 system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Adjuntas County, Administrative watershed units, Administrative watershed units, Aguada County, Aguadilla County, All tags...
thumbnail
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 system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Adjuntas County, Administrative watershed units, Administrative watershed units, Aguada County, Aguadilla County, All tags...
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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 extent of surface water drainage to a point except in coastal or lake front areas where there could be multiple outlets as stated by the "Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)" "Standard" (https://pubs.usgs.gov/tm/11/a3/). Watershed boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. This dataset represents the hydrologic unit boundaries to the 12-digit (6th level)...
Tags: 10-digit, 12-digit, 14-digit, 16-digit, 2-digit, All tags...
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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 system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Adjuntas County, Administrative watershed units, Administrative watershed units, Aguada County, Aguadilla County, All tags...
thumbnail
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 extent of surface water drainage to a point except in coastal or lake front areas where there could be multiple outlets as stated by the "Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)" "Standard" (https://pubs.usgs.gov/tm/11/a3/). Watershed boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. This dataset represents the hydrologic unit boundaries to the 12-digit (6th level)...
Tags: 10-digit, 12-digit, 14-digit, 16-digit, 2-digit, All tags...
thumbnail
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 system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Adjuntas County, Administrative watershed units, Administrative watershed units, Aguada County, Aguadilla County, All tags...
thumbnail
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 system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Adjuntas County, Administrative watershed units, Administrative watershed units, Aguadilla County, Area of Complex Channels, All tags...
thumbnail
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 system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Adjuntas County, Administrative watershed units, Administrative watershed units, Aguada County, Aguadilla County, All tags...


    map background search result map search result map USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 21 (published 20220609) USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 21 (published 20220609) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 21010002 (published 20220712) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 21010003 (published 20220610) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 21010002 (published 20220712) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 21010003 (published 20220610) USGS National Hydrography Dataset Best Resolution (NHD) - Puerto Rico (published 20220711) USGS National Hydrography Dataset Best Resolution (NHD) - Puerto Rico (published 20220711) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 2101 (published 20220712) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 2101 (published 20220712) USGS National Hydrography Dataset Best Resolution (NHD) - Puerto Rico (published 20220711) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 21010003 (published 20220610) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 21010003 (published 20220610) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 21010002 (published 20220712) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 21010002 (published 20220712) USGS National Hydrography Dataset Best Resolution (NHD) - Puerto Rico (published 20220711) USGS National Hydrography Dataset Best Resolution (NHD) - Puerto Rico (published 20220711) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 2101 (published 20220712) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 2101 (published 20220712) USGS National Hydrography Dataset Best Resolution (NHD) - Puerto Rico (published 20220711) USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 21 (published 20220609) USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 21 (published 20220609)