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Layers of geospatial data include contours, boundaries, land cover, hydrography, roads, transportation, geographic names, structures, and other selected map features.
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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...
Types: Citation; Tags: Administrative watershed units, Administrative watershed units, Area of Complex Channels, Area to be submerged, Barnstable County, All tags...
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Background In recent years, more and more people have become concerned about Long Island's supply of freshwater. Currently, there is no comprehensive, island-wide resource that summarizes recent U.S. Geological Survey (USGS) research related to the Island's aquifer system. A webpage will be developed by the USGS that will compile published data from the hydrologic-surveillance program, in place since the mid-1970’s, and various USGS sources, and supplement this information with more recent seasonal and annual hydrologic technical assistance will be provided to the Suffolk County Water Authority (SCWA) to help them produce an easy to understand annual report that will provide a snapshot of the state of Long Island's...
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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: Administrative watershed units, Administrative watershed units, Area of Complex Channels, Area to be submerged, Basin, 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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Problem - The major hydrogeologic units of Long Island, New York, have been delineated as part of the islandwide mapping effort of Smolensky, Buxton, and Shernoff that was published in 1989 as U.S. Geological Survey (USGS) Hydrologic Atlas (HA) 709. Concern about local details in the hydrogeologic framework that may not be represented in HA-709 has led the USGS, in cooperation with the U.S. Environmental Protection Agency (EPA), to assess the hydrogeology of the Long Island area so ground-water-flow modeling planned by EPA can more fully reflect local hydrogeologic conditions. Objectives - The primary objective of this project is to construct geographic information system (GIS) datasets of the altitudes of the...
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.
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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: Addison County, Administrative watershed units, Administrative watershed units, Albany County, Allegany 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: Administrative watershed units, Administrative watershed units, Appling County, Area of Complex Channels, Area to be submerged, 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: Administrative watershed units, Administrative watershed units, Area of Complex Channels, Area to be submerged, Basin, 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: Administrative watershed units, Administrative watershed units, Area of Complex Channels, Area to be submerged, Basin, All tags...
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The U.S. Geological Survey (USGS) is providing online maps of water-table and potentiometric-surface altitude in the upper glacial, Magothy, Jameco, Lloyd, and North Shore aquifers on Long Island, New York, April–May 2016. Also provided is a depth-to-water map for Long Island, New York, April–May 2016. The USGS makes these maps and geospatial data available as REST Open Map Services (as well as HTTP, JSON, KML, and shapefile), so end-users can consume them on mobile and web clients. A companion report, U.S. Geological Survey Scientific Investigations Map 3398 (Como and others, 2018; https://doi.org/10.3133/sim3398) further describes data collection and map preparation and presents 68x22 in. Portable Document...


map background search result map search result map Nassau Hydrogeologic Maps State of the Aquifer, Long Island, New York USGS National Hydrography Dataset (NHD) Best Resolution for 20160831 State or Territory FileGDB 10.1 Model Version 2.2.1 Potentiometric Surface Contours of the Lloyd and North Shore Aquifers, April-May 2016 USGS Combined Vector for Bayville, New York 20160804 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Flushing, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Hicksville, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Huntington, New York 20160805 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 22352 Jamaica, New York 20170310 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 22352 Jamaica, New York 20170310 for 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Lawrence, New York 20160804 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for West Gilgo Beach, New York 20160804 7.5 x 7.5 minute Shapefile USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20190628) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 02030104 (published 20190708) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 02030201 (published 20190708) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 4 - 0307 (published 20190702) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 03070205 (published 20190710) NHD 20190622 for New York State or Territory Shapefile Model Version 2.2.1 USGS US Topo 7.5-minute map for Dinsmore, FL 2018 USGS US Topo 7.5-minute map for Gross, FL,GA 2018 USGS Combined Vector for Bayville, New York 20160804 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Flushing, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Hicksville, New York 20160805 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Huntington, New York 20160805 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 22352 Jamaica, New York 20170310 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 22352 Jamaica, New York 20170310 for 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Lawrence, New York 20160804 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for West Gilgo Beach, New York 20160804 7.5 x 7.5 minute Shapefile USGS US Topo 7.5-minute map for Dinsmore, FL 2018 USGS US Topo 7.5-minute map for Gross, FL,GA 2018 Nassau Hydrogeologic Maps USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 03070205 (published 20190710) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 02030104 (published 20190708) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 02030201 (published 20190708) Potentiometric Surface Contours of the Lloyd and North Shore Aquifers, April-May 2016 State of the Aquifer, Long Island, New York USGS National Hydrography Dataset (NHD) Best Resolution for 20160831 State or Territory FileGDB 10.1 Model Version 2.2.1 USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 4 - 0307 (published 20190702) NHD 20190622 for New York State or Territory Shapefile Model Version 2.2.1 USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20190628)