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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the sream segments or reaches that comprise the nation's surface water drainage system. Medium resolution NHD is based on the content of the U.S. Geological Survey 1:100,000-scale Digital Line Graph (DLG) hydrography data, integrated with reach-related information from the U.S. Environmental Protection Agency Reach File Version 3.0 (RF3). More specifically, it contains reach codes for networked features and isolated lakes, flow direction, names, stream level, and centerline representations for areal water bodies. Reaches are also defined to represent water bodies and the approximate shorelines of the Great...
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Derived data layer based upon the NHD+ data layer. The layer represents the distance to the perennial streams and is used to model invasive annual grasses and noxious forbs and species assemblages. The NHDPlus Version 1.0 is an integrated suite of application-ready geospatial data sets that incorporate many of the best features of the National Hydrography Dataset (NHD) and the National Elevation Dataset (NED). The NHDPlus includes a stream network (based on the 1:100,000-scale NHD), improved networking, naming, and "value-added attributes" (VAA's). NHDPlus also includes elevation-derived catchments (drainage areas) produced using a drainage enforcement technique first broadly applied in New England, and thus dubbed...
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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...
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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...
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The potentiometric surface of the Sparta Sand in northern Louisiana is shown by contours on four maps. Maps for 1900, 1965 , and spring 1975 are generalized, small-scale maps from previously published reports. The spring 1980 map (1:500,000) is based on measurements in 144 wells and includes the southern tier of counties in southern Arkansas. The map shows regional effects of pumping from the Sparta Sand and effects of local pumping centers at Magnolia and El Dorado, Ark., and at Minden, Ruston, Jonesboro-Hodge, Winnfield, Bastrop, and in the Monroe area of Louisiana. (USGS) First release: April, 2019; revised April 2021 (version 1.1). The previous version can be obtained by contacting the USGS Lower Mississippi-Gulf...
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These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This dataset describes springs in the Black Hills area that were used to create potentiometric surface maps for the Inyan Kara, Minnekahta, Minnelusa, Madison, and Deadwood aquifers.
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These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This map shows the USGS (United States Geologic Survey), NWIS (National Water Inventory System) Hydrologic Data Sites for Sanpete County, Utah. The scope and purpose of NWIS is defined on the web site: http://water.usgs.gov/public/pubs/FS/FS-027-98/
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Sky Island Alliance (SIA) is a non-governmental organizational that works to protect and restore the rich natural heritage of native species and habitats in the Sky Island Region. We work with volunteers, scientists, land-owners, public officials, and government agencies to establish protected areas, restore healthy landscapes, and promote public appreciation of the region’s unique biological diversity. Because of our long-standing collaborative relationships with land managers and our large corps of skilled volunteers, we were in a unique position to spearhead this project.SIA initiated this springs inventory, assessment and management planning project to develop baseline information on springs in the Sky Island...
Categories: Data, Publication; Types: ArcGIS REST Map Service, Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2011, AZ-02, AZ-03, Arizona, Conservation NGOs, All tags...
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This dataset provides the geographical locations of karst groundwater basins, groundwater flowpaths, and dye injection/recovery points in Kentucky. Dye tracing is a common method used for understanding groundwater flow pathways and connectivity. Dye is poured (or injected) into a sinking stream, well, sinkhole, or body of flowing water, where it is carried down-gradient. The locations at which dye is detected (or recovered) indicates a connection from injection to recovery site. This connection is a groundwater flowpath. As more dye traces are conducted, flowpath convergence or lack thereof can be used to draw karst groundwater basins, which are analogous to surficial watersheds. Karst groundwater basins differ...
Categories: Collection, Data; Tags: Collection, EARTH SCIENCE, EARTH SCIENCE, EARTH SCIENCE, EARTH SCIENCE, All tags...
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NatureServe worked with several federal, state, and NGO partners in the United States and Mexico to conduct a climate change vulnerability assessment of major natural community types found within the Mojave and Sonoran Deserts. The project focused on ten major upland, riparian, and aquatic community types, including pinyon-juniper woodlands, Joshua tree-blackbrush scrub, creosote-bursage scrub, salt desert scrub, Paloverde-mixed cacti scrub, semi-desert grassland, desert riparian and stream, riparian mesquite bosque, and desert springs. This effort piloted a new Habitat Climate Change Vulnerability Index (HCCVI) approach being developed by NatureServe, as a companion to an existing index for species. The project...
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Funded by Arizona Game & Fish Department, our team of conservation biologists and GIS Analysts at Northern Arizona University are creating detailed linkage designs for 16 priority areas highlighted in the Wildlife Linkages Assesment. These plans identify and map multi-species corridors that will best maintain wildlife movement between wildland blocks, as well as highlight specific planning and road mitigation measures required to maintain connectivity in these corridors. Note: The linkage design reports are in compressed PDF format for faster download. Unfortunately, the compression occasionally makes small text on maps within the report difficult to read. If you would like a high-resolution PDF or PNG copy of any...
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Mapa Digital de México es un Sistema de Información Geográfica (SIG), desarrollado por el INEGI, que integra información de los elementos naturales y culturales que conforman el entorno geográfico del país y permite relacionarlos con información estadística. Se ofrece en dos modalidades, que buscan atender distintas necesidades de los usuarios: Mapa Digital de México en línea. Facilita la consulta de 168 capas de información sobre cartografía urbana (carreteras, localidades e infraestructura en general) y recursos naturales (ríos, lagos, montañas, vegetación, etc.) de nuestro territorio, y permite búsquedas rápidas. Mapa Digital de México para escritorio. Es una versión más amplia y desarrollada para instalarse...
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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...
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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...
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This data set represents canals and ditches as represented by the National Hydrography Dataset (NHD), clipped to the Central Basin and Range ecoregion boundary. The USGS/EPA metadata has been retained as this most accurately represents the source and origin of the data. However as this is a deliverable for the BLM Rapid Ecoregional Assessment, the use and access constraints have been changed to reflect the BLM's recommended language. The 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...
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The NHDPlus Version 1.0 is an integrated suite of application-ready geospatial data sets that incorporate many of the best features of the National Hydrography Dataset (NHD) and the National Elevation Dataset (NED). The NHDPlus includes a stream network (based on the 1:100,000-scale NHD), improved networking, naming, and "value-added attributes" (VAA's). NHDPlus also includes elevation-derived catchments (drainage areas) produced using a drainage enforcement technique first broadly applied in New England, and thus dubbed "The New-England Method". This technique involves "burning-in" the 1:100,000-scale NHD and when available building "walls" using the national Watershed Boundary Dataset (WBD). The resulting modified...
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The NHDPlus Version 1.0 is an integrated suite of application-ready geospatial data sets that incorporate many of the best features of the National Hydrography Dataset (NHD) and the National Elevation Dataset (NED). The NHDPlus includes a stream network (based on the 1:100,000-scale NHD), improved networking, naming, and "value-added attributes" (VAA's). NHDPlus also includes elevation-derived catchments (drainage areas) produced using a drainage enforcement technique first broadly applied in New England, and thus dubbed "The New-England Method". This technique involves "burning-in" the 1:100,000-scale NHD and when available building "walls" using the national Watershed Boundary Dataset (WBD). The resulting modified...
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The most widely used aquifer for industry and public supply in the Mississippi embayment in Arkansas, Louisiana, Mississippi, and Tennessee is the Sparta-Memphis aquifer. Decades of pumping from the Sparta-Memphis aquifer have affected ground-water levels throughout the Mississippi embayment. Regional assessments of water-level data from the aquifer are important to document regional water-level conditions and to develop a broad view of the effects of ground-water development and management on the sustainability and availability of the region's water supply. This information is useful to identify areas of water-level declines, identify cumulative areal declines that may cross State boundaries, evaluate the effectiveness...


map background search result map search result map Medium Resolution Flowline (NHD) for Wyoming at 1:100,000 High-resolution Waterbodies (NHD) for Wyoming at 1:24,000 Mapa Digital de Mexico Arizona Missing Linkages Climate Change Vulnerability and Adaptation Strategies for Natural Communities Report, Inventory and Assessment Protocols, Adaptation Plan, and Presentation for: Springs in the Sky Island Region: Inventory, Assessment, and Management Planning Project USGS 1:24000-scale Quadrangle for Spring, TX 1960 USGS 1:24000-scale Quadrangle for Spring, TX 1982 Digitized Contours from Georeferenced Plate 1980 from "Potentiometric maps of the Sparta Sand, northern Louisiana and southern Arkansas, 1900, 1965, 1975, and 1980" (Ryals, 1980; version 1.1, April 2021) Digitized Contour from Georeferenced plate 2007 from "Potentiometric Surface in the Sparta-Memphis Aquifer of the Mississippi Embayment, Spring 2007" (Shrader, 2008; version 1.1, April 2021) BLM REA NGB 2011 Springs and Seeps in the NGB BLM REA SLV 2013 NHD Flowlines Line BLM REA MBR 2010 Water Transmission (Ditches and Canals) of the Central Great Basin and Range Ecosystem (NHD Flowline) BLM REA SNK 2010 NHDWaterbody BLM REA CBR 2010 Distance to Perennial Streams BLM REA CBR 2010 National Hydrography Dataset Plus - NHDPlus Poly BLM REA CBR 2010 National Hydrography Dataset Plus - NHDPlus Catchment Poly Spring point coverage for the potentiometric coverages for the Inyan Kara, Minnekahta, Minnelusa, Madison, and Deadwood Aquifers in the Black Hills Area, South Dakota Hydrologic Data Sites for Sanpete County, Utah Kentucky Karst Groundwater Map Data USGS 1:24000-scale Quadrangle for Spring, TX 1960 USGS 1:24000-scale Quadrangle for Spring, TX 1982 Hydrologic Data Sites for Sanpete County, Utah Spring point coverage for the potentiometric coverages for the Inyan Kara, Minnekahta, Minnelusa, Madison, and Deadwood Aquifers in the Black Hills Area, South Dakota Digitized Contours from Georeferenced Plate 1980 from "Potentiometric maps of the Sparta Sand, northern Louisiana and southern Arkansas, 1900, 1965, 1975, and 1980" (Ryals, 1980; version 1.1, April 2021) Report, Inventory and Assessment Protocols, Adaptation Plan, and Presentation for: Springs in the Sky Island Region: Inventory, Assessment, and Management Planning Project BLM REA SLV 2013 NHD Flowlines Line Kentucky Karst Groundwater Map Data Arizona Missing Linkages Digitized Contour from Georeferenced plate 2007 from "Potentiometric Surface in the Sparta-Memphis Aquifer of the Mississippi Embayment, Spring 2007" (Shrader, 2008; version 1.1, April 2021) BLM REA NGB 2011 Springs and Seeps in the NGB Medium Resolution Flowline (NHD) for Wyoming at 1:100,000 BLM REA CBR 2010 National Hydrography Dataset Plus - NHDPlus Poly BLM REA CBR 2010 National Hydrography Dataset Plus - NHDPlus Catchment Poly BLM REA SNK 2010 NHDWaterbody BLM REA MBR 2010 Water Transmission (Ditches and Canals) of the Central Great Basin and Range Ecosystem (NHD Flowline) Climate Change Vulnerability and Adaptation Strategies for Natural Communities BLM REA CBR 2010 Distance to Perennial Streams Mapa Digital de Mexico High-resolution Waterbodies (NHD) for Wyoming at 1:24,000