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Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Citation (2) Community (1) Contacts U.S. Geological Survey U.S. Geological Survey, National Geospatial Technical Operations Center USGS - National Geospatial Technical Operations Center (NGTOC) Cunningham, K J Harvey, R W More... Categories Data (2) Publication (2) Tag Types Theme (5) Place (4) Tag Schemes None (3) none (2) USGS Thesaurus (1) NGDA Portfolio Themes (3) ISO 19115 Topic Category (3) Geographic Names Information System (3) GNIS (1) More... View Results as: JSON ATOM CSV

USGS Hydrography (NHD) Overlay Map Service from The National Map - National Geospatial Data Asset (NGDA) National Hydrography Dataset (NHD) The USGS National Hydrography Dataset (NHD) service from The National Map (TNM) is a comprehensive set of digital spatial data that encodes information about naturally occurring and constructed bodies of surface water (lakes, ponds, and reservoirs), paths through which water flows (canals, ditches, streams, and rivers), and related entities such as point features (springs, wells, stream gages, and dams). The information encoded about these features includes classification and other characteristics, delineation, geographic name, position and related measures, a "reach code" through which other information can be related to the NHD, and the direction of water flow. The network of reach codes delineating water and... Types: Citation; Tags: HU, Hydrography, NGDA, NGP-TNM, NHD, All tags... National Geospatial Data Asset, Overlay Map Service, REST, US, United States, WBD, WMS, Water Inland Theme, a-16, basin, canal, dam, ditch, drainage, gage, gaging station, hydrography, hydrologic unit, inlandWaters, lake, marsh, pond, region, reservoir, river, spring, stream, subbasin, subregion, subwatershed, swamp, water, water - inland, watershed, well, Fewer tags Assessing the Vulnerability of a Municipal Well Field to Contamination in a Karst Aquifer Proposed expansion of extractive lime-rock mines near the Miami–Dade County Northwest well field and Everglades wetland areas has garnered intense scrutiny by government, public, environmental stakeholders, and the media because of concern that mining will increase the risk of pathogen contamination. Rock mines are excavated to the same depth as the well field's primary producing zone. The underlying karst Biscayne aquifer is a triple-porosity system characterized by (1) a matrix of interparticle porosity and separate vug porosity; (2) touching-vug porosity that forms preferred, stratiform passageways; and, less commonly, (3) conduit porosity formed by thin solution pipes, bedding-plane vugs, and cavernous vugs.... Categories: Publication; Types: Citation; Tags: Ground-Water Tracers, Karst Aquifers, Pathogens, Well National Hydrography Dataset (NHD) - USGS National Map Downloadable Data Collection 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... Categories: Data; Types: Citation; Tags: Administrative watershed units, Area of Complex Channels, Area to be submerged, Basin, Bay/Inlet, All tags... Boundaries, Boundary, Bridge, Canal/Ditch, Coastline, Connector, Dam/Weir, Drainage area for surface water, Estuary, FileGDB, Flow direction network, Flume, ForeShore, Gaging Station, Gate, GeoPackage, HU10, HU12, HU14, HU16, HU2, HU4, HU6, HU8, HUC, Hazard Zone, Hydrographic, Hydrography, Hydrologic Unit, Hydrologic Unit Code, Hydrologic Units, Ice mass, Inundation Area, Lake, Levee, Line, Lock Chamber, Marsh, NGDA, NGDAID159, National Geospatial Data Asset, Nonearthen Shore, Playa, Point, PointEvent, Pond, Rapids, Reach, Reach code, Reef, Region, Reservoir, River, Rock, Sea/Ocean, Sink/Rise, Sounding Datum Line, Special Use Zone, Special Use Zone Limit, Spillway, Stream, Stream/River, Submerged Stream, Swamp, Topographic, Tunnel, US, USGS:ecd2ad5e-faa2-4291-bcdb-441b7113ea41, Underground Conduit, United States, WBD, Wall, Wash, Water Inland Theme, Water Intake Outflow, Waterfall, Watershed, Watershed Boundaries, Watershed Boundary Dataset, Well, artificial path, boundaries, dams, drainage systems and characteristics, inlandWaters, surface water, surface water systems, Fewer tags National Hydrography Dataset Plus High Resolution (NHDPlus HR) - USGS National Map Downloadable Data Collection 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), the 10-meter 3D Elevation Program Digital Elevation Model (3DEP DEM), and the National Watershed Boundary Dataset (WBD). The NHDPlus HR combines the NHD, 3DEP DEMs, and WBD to create a stream network with linear referencing, feature naming, "value added attributes" (VAAs), elevation-derived catchments, and other features for hydrologic data analysis. The stream network with linear referencing is a system of data relationships applied to hydrographic systems so that one stream reach "flows" into another and "events" can be tied to and... Types: Citation; Tags: Administrative watershed units, Area of Complex Channels, Area to be submerged, Basin, Bay/Inlet, All tags... Boundaries, Boundary, Bridge, Canal/Ditch, Coastline, Connector, Dam/Weir, Drainage area for surface water, Estuary, FileGDB, Flow direction network, Flume, ForeShore, Gaging Station, Gate, GeoPackage, HU10, HU12, HU14, HU16, HU2, HU4, HU6, HU8, HUC, Hazard Zone, Hydrographic, Hydrography, Hydrologic Unit, Hydrologic Unit Code, Hydrologic Units, Ice mass, Inundation Area, Lake, Levee, Line, Lock Chamber, Marsh, NHDPlus High Resolution (NHDPlus HR), Nonearthen Shore, Playa, Point, PointEvent, Pond, Rapids, Reach, Reach code, Reef, Region, Reservoir, River, Rock, Sea/Ocean, Sink/Rise, Sounding Datum Line, Special Use Zone, Special Use Zone Limit, Spillway, Stream, Stream/River, Submerged Stream, Swamp, Topographic, Tunnel, US, USGS:0826ab39-e5bd-47e6-ba8f-56f340094f81, Underground Conduit, United States, WBD, Wall, Wash, Water Intake Outflow, Waterfall, Watershed, Watershed Boundaries, Watershed Boundary Dataset, Well, artificial path, boundaries, cartography, catchment, dams, digital elevation models, drainage basins, drainage systems and characteristics, earth sciences, elevation, environment, geographic information systems, geoscientificInformation, geospatial analysis, hydrographic datasets, hydrology, imageryBaseMapsEarthCover, inlandWaters, land surface characteristics, river reaches, streamflow, streamflow data, surface water, surface water quality, surface water systems, topography, water resources, watersheds, Fewer tags Assessing the Vulnerability of a Municipal Well Field to Contamination in a Karst Aquifer Proposed expansion of extractive lime-rock mines near the Miami–Dade County Northwest well field and Everglades wetland areas has garnered intense scrutiny by government, public, environmental stakeholders, and the media because of concern that mining will increase the risk of pathogen contamination. Rock mines are excavated to the same depth as the well field's primary producing zone. The underlying karst Biscayne aquifer is a triple-porosity system characterized by (1) a matrix of interparticle porosity and separate vug porosity; (2) touching-vug porosity that forms preferred, stratiform passageways; and, less commonly, (3) conduit porosity formed by thin solution pipes, bedding-plane vugs, and cavernous vugs.... Categories: Publication; Types: Citation; Tags: Ground-Water Tracers, Karst Aquifers, Pathogens, Well Slug test data for Viequense deep well, Utuado, Puerto Rico The U.S. Geological Survey, in cooperation with the Puerto Rico Department of Natural and Environmental Resources, completed a study to determine whether a relation exists between the extent of forest cover and the magnitude of base flow at two sets of paired drainage basins in the highlands of the municipalities of Adjuntas and Utuado within the mountainous interior of Puerto Rico. One set of paired basins includes the Río Guaónica and Río Tanamá, both tributaries of the Río Grande de Arecibo. The other set includes two smaller basins in the drainage basin of the Río Coabey, which is a tributary of the Río Tanamá. The paired basins in each set have similar rainfall patterns, geologic substrate, and aspect; the... Categories: Data; Types: Citation; Tags: Adjuntas, Puerto Rico, Utuado, Well, slug test USGS National Hydrography Dataset (NHD) Stewardship Plan Objectives for FY17 from the The National Map - National Geospatial Data Asset (NGDA) National Hydrography Dataset (NHD) U.S. Geological Survey, Department of the Interior - The annual National Hydrography Dataset (NHD) stewardship plan is to maintain hydrography data in the NHD over the United States and its territories. NHD for the nation has been collected and is now in maintenance mode. Interested parties who wish to become a NHD stewardship partner with the USGS in FY17 or in future years should contact a USGS Geospatial Liaison - http://liaisons.usgs.gov/geospatial/documents/TNM_Partnership_User_ContactList.pdf. To find out more about hydrography stewardship go to http://nhd.usgs.gov/stewardship.html or for exact project status information on areas currently in work go to http://nhd.usgs.gov/project_status.html Types: Citation; Tags: Hydrography, NGDA, NHD, National Geospatial Data Asset, National Hydrography Dataset, All tags... Water Inland Theme, acquisition plan, canal, dam, ditch, gage, gaging station, inlandWaters, lake, marsh, pond, reservoir, river, spring, stewardship plan, stream, swamp, water, well, Fewer tags