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Digital Shoreline Analysis System version 4.3 Transects with Short-Term Linear Regression Rate Calculations for Louisiana Sandy ocean beaches in the United States are popular tourist and recreational destinations and constitute some of the most valuable real estate in the country. The boundary between land and water along the coastline is often the location of concentrated residential and commercial development and is frequently exposed to a range of natural hazards, which include flooding, storm effects, and coastal erosion. In response, the U.S. Geological Survey (USGS) is conducting a national assessment of coastal change hazards. One component of this research effort, the National Assessment of Shoreline Change Project, documents changes in shoreline position as a proxy for coastal change. Shoreline position is an easily understood... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Accretion, Breton Islands, Breton National Wildlife Refuge, CMGP, Chandeleur Islands, All tags... Coastal and Marine Geology Program, DSAS, Digital Shoreline Analysis System, East Timbalier Island, Erosion, Grand Isle, Grand Terre Islands, Gulf of Mexico, Historic Shoreline, Isles Dernieres, LA, Lanaux Island, Linear Regression Rate, Louisiana, National Assessment of Shoreline Change Project, North America, Pelican Island, Shoreline, Short-Term Shoreline Change Rate, Transect, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, environment, geoscientificInformation, oceans, Fewer tags Digital Shoreline Analysis System version 4.3 Transects with Short-Term End Point Rate Calculations for Louisiana Sandy ocean beaches in the United States are popular tourist and recreational destinations and constitute some of the most valuable real estate in the country. The boundary between land and water along the coastline is often the location of concentrated residential and commercial development and is frequently exposed to a range of natural hazards, which include flooding, storm effects, and coastal erosion. In response, the U.S. Geological Survey (USGS) is conducting a national assessment of coastal change hazards. One component of this research effort, the National Assessment of Shoreline Change Project, documents changes in shoreline position as a proxy for coastal change. Shoreline position is an easily understood... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Accretion, Breton Islands, Breton National Wildlife Refuge, CMGP, Chandeleur Islands, All tags... Coastal and Marine Geology Program, DSAS, Digital Shoreline Analysis System, East Timbalier Island, End Point Rate, Erosion, Grand Isle, Grand Terre Islands, Gulf of Mexico, Historic Shoreline, Isles Dernieres, LA, Lanaux Island, Louisiana, National Assessment of Shoreline Change Project, North America, Pelican Island, Shoreline, Short-Term Shoreline Change Rate, Transect, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, environment, geoscientificInformation, oceans, Fewer tags Conservation Priorities for Open Space Recreation Access in the Southeast United States, by Census Block Group (2018) Publicly accessible open spaces provide valuable opportunities for people to exercise, play, socialize, and build community. People are more likely to use public open spaces that are close (ideally within walking distance) to their homes. To assess the spatial distribution of access to open space for recreation in the southeastern United States, we constructed an index of open space access based on the size of the largest publicly accessible open space within 10 miles of each point on the landscape, using three distance categories to represent whether people can reach the open spaces by walking (within 0.5 mile), via a short drive (within 3 miles), or via a longer drive (within 10 miles). Using the open space access... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alabama, Arkansas, Data Visualization & Tools, Data and Information Sharing, Florida, All tags... Georgia, Louisiana, Mississippi, Missouri, North Carolina, Science Tools for Managers, South Carolina, Southeast CASC, Tennessee, Virginia, parks, recreation, Fewer tags Ports of the United States This map layer shows major ports in the United States, Puerto Rico, and the U.S. Virgin Islands. A port is a city, town, or urban area with a harbor where ships load or unload. This is a revised version of the July 2012 map layer. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Academics & scientific researchers, Alabama, Arizona, Arkansas, California, All tags... Colorado, Connecticut, Conservation NGOs, Data, Delaware, District of Columbia, EARTH SCIENCE > HUMAN DIMENSIONS > INFRASTRUCTURE > TRANSPORTATION, Federal resource managers, Florida, Georgia, Harbors, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, LCC Network Science Catalog, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Ports, Puerto Rico, Regional & county planners, Rhode Island, South Carolina, South Dakota, State agencies, Tennessee, Texas, Transportation, U.S. Virgin Islands, US, United States, Utah, Vermont, Virgin Islands, Virginia, Washington, West Virginia, Wisconsin, Wyoming, completed, transportation, Fewer tags Structure Contours from Top of Sparta Aquifer from Figure 2, 1996, from Hydrogeology and Potentiometric Surface of the Sparta Aquifer in Northern Louisiana, October 1996 (Brantly, Seanor, and McCoy, 2002) This report describes the thickness and areal extent of the Sparta aquifer, identifies sands within the fresh-water extent of the aquifer, and presents data and a map that illustrate the generalized potentiometric surface (water levels) during October 1996. The report includes a detailed geophysical log, structure contour maps, hydrogeologic sections, and hydrographs of water levels in selected wells. The potentiometric surface-map can be used for determining direction of ground-water flow, hydraulic gradients, and the effects of withdrawals on the aquifer. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Louisiana, Mississippi Embayment, Sparta aquifer, altitude, downdip limit, All tags... groundwater, structure contour, western extent, Fewer tags Structure Contours of the Base of the Sparta Sand from Plate 3, 1968, from Hydrologic significance of the lithofacies of the Sparta Sand in Arkansas, Louisiana, Mississippi, and Texas (Payne, 1968) The study of the geohydrology of the Sparta Sand is the initial phase in the investigation of the geohydrology of the Claiborne Group. The thicker sections of the Sparta Sand lie along the axes of the Mississippi embayment and Desha basin. The area of maximum thickness, 1,100-1,200 feet, is in Claiborne and Warren Counties, Miss., and Madison Parish, La. Local thickening or thinning over some structures indicates structural movement during Sparta time. A sand-percentage map prepared from data derived from interpretation of electric logs indicates that the Sparta Sand was deposited as a delta-fluvial plain complex in Arkansas, Louisiana, and Mississippi. This complex shows a text-book example of a well-developed... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arkansas, Louisiana, Mississippi, Mississippi Embayment, Sparta Sand, All tags... base, groundwater, structure contour, Fewer tags Chance of damage from an earthquake in 2017 based on the average of horizontal spectral response acceleration for 1.0-second period and peak ground acceleration for the Central and Eastern United States This data set represents the results of calculations of hazard curves for a grid of points with a spacing of 0.05 degrees in latitude and longitude. It represents the chance of experiencing damaging earthquakes for fixed ground shaking levels that corresponds with MMI = VI. The values are obtained by averaging the probability of experiencing MMI = VI based on a peak ground acceleration value of 0.1155 g for site class D, and the probability of experiencing MMI = VI based on 1.0-second spectral acceleration value of 0.102 g for site class D. The data are for the Central and Eastern United States and are based on the one-year model. Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alabama, Arizona, Arkansas, Colorado, Connecticut, All tags... Delaware, District of Columbia, Earthquake, Florida, Georgia, Hazard, Illinois, Indiana, Induced, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Natural, Nebraska, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, Seismic, South Carolina, South Dakota, Tennessee, Texas, USA, United States, Utah, Vermont, Virginia, West Virginia, Wisconsin, Wyoming, Fewer tags Riverine Sand Mining/Scofield Island Restoration (BA-40): 2014 habitat classification (ver. 1.1, August 2021) The Barrier Island Comprehensive Monitoring (BICM) program was developed by Louisiana’s Coastal Protection and Restoration Authority (CPRA) and is implemented as a component of the System Wide Assessment and Monitoring Program (SWAMP). The program uses both historical data and contemporary data collections to assess and monitor changes in the aerial and subaqueous extent of islands, habitat types, sediment texture and geotechnical properties, environmental processes, and vegetation composition. Examples of BICM datasets include still and video aerial photography for documenting shoreline changes, shoreline positions, habitat mapping, land change analyses, light detection and ranging (lidar) surveys for topographic... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Chandeleur Islands Region, Gulf of Mexico, Iberia Parish, Louisiana, Louisiana Coastal, All tags... USGS Science Data Catalog (SDC), barrier islands, barrier vegetation, beach, coastal wetlands, dune, environment, geoscientificInformation, habitat map, imageryBaseMapsEarthCover, mangrove, marsh, remote sensing, scrub/shrub, Fewer tags Pass Chaland to Grand Bayou Pass Barrier Shoreline Restoration (BA-35): 2016 habitat classification The Barrier Island Comprehensive Monitoring (BICM) program was developed by Louisiana’s Coastal Protection and Restoration Authority (CPRA) and is implemented as a component of the System Wide Assessment and Monitoring (SWAMP) program. The program uses both historical data and contemporary data collections to assess and monitor changes in the aerial and subaqueous extent of islands, habitat types, sediment texture and geotechnical properties, environmental processes, and vegetation composition. Examples of BICM datasets include still and video aerial photography for documenting shoreline changes, shoreline positions, habitat mapping, land change analyses, light detection and ranging (lidar) surveys for topographic... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Ecology, Gulf of Mexico, Louisiana, Louisiana Coastal, Modern Delta Region, All tags... Plaquemines Parish, USGS Science Data Catalog (SDC), Wildlife Biology, barrier islands, barrier vegetation, beach, coastal wetlands, dune, environment, geoscientificInformation, habitat map, imageryBaseMapsEarthCover, mangrove, marsh, remote sensing, scrub/shrub, Fewer tags Airborne electromagnetic, magnetic, and radiometric survey of the Mississippi Alluvial Plain, November 2019 - March 2020 Airborne electromagnetic (AEM), magnetic, and radiometric data were acquired November 2019 to March 2020 along 24,030 line-kilometers (line-km) over the Mississippi Alluvial Plain (MAP). Data were acquired by CGG Canada Services, Ltd. with three different airborne sensors: the CGG Canada Services, Ltd. TEMPEST time-domain AEM instrument that is used to map subsurface geologic structure at depths up to 300 meters (m), depending on the subsurface resistivity; a Scintrex CS-3 cesium vapor magnetometer that detects changes in deep (hundreds of meters to kilometers) geologic structure based on variations in the magnetic properties of different formations; and a Radiation Solutions RS-500 spectrometer that detects the... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arkansas, Arkansas River, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Geophysics, All tags... Hydrology, Illinois, Louisiana, MRVA, Mississippi, Mississippi Alluvial Plain, Mississippi River, Mississippi River Valley Alluvial aquifer, Missouri, New Madrid Seismic Zone, Shellmound, Tennessee, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), WAUSP, Water Availability and Use Science Program, Water Resources, aeromagnetic surveying, aeroradiometric surveying, electromagnetic surveying, electromagnetics, engineering sciences, environment, geologic structure, geophysics, geoscientificInformation, geospatial datasets, groundwater, hydrogeology, hydrology, magnetic field, magnetics, potassium, radiometrics, resistivity, thorium, uranium, water resources, Fewer tags 1.0-second spectral response acceleration (5% of critical damping) with a 1% probability of exceedance in 1 year for the Central and Eastern United States This data set represents the results of calculations of hazard curves for a grid of points with a spacing of 0.05 degrees in latitude and longitude. This particular data set is for horizontal spectral response acceleration for 1.0-second period with a 1 percent probability of exceedance in 1 year. The data are for the Central and Eastern United States and are based on the one-year model. Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alabama, Arizona, Arkansas, Colorado, Connecticut, All tags... Delaware, District of Columbia, Earthquake, Florida, Georgia, Hazard, Illinois, Indiana, Induced, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Natural, Nebraska, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, Seismic, South Carolina, South Dakota, Tennessee, Texas, USA, United States, Utah, Vermont, Virginia, West Virginia, Wisconsin, Wyoming, Fewer tags Digital Shoreline Analysis System version 4.3 Transects with Long-Term Linear Regression Rate Calculations for Louisiana Sandy ocean beaches in the United States are popular tourist and recreational destinations and constitute some of the most valuable real estate in the country. The boundary between land and water along the coastline is often the location of concentrated residential and commercial development and is frequently exposed to a range of natural hazards, which include flooding, storm effects, and coastal erosion. In response, the U.S. Geological Survey (USGS) is conducting a national assessment of coastal change hazards. One component of this research effort, the National Assessment of Shoreline Change Project, documents changes in shoreline position as a proxy for coastal change. Shoreline position is an easily understood... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Accretion, Breton Islands, Breton National Wildlife Refuge, CMGP, Chandeleur Islands, All tags... Coastal and Marine Geology Program, DSAS, Digital Shoreline Analysis System, East Timbalier Island, Erosion, Grand Isle, Grand Terre Islands, Gulf of Mexico, Historic Shoreline, Isles Dernieres, LA, Lanaux Island, Linear Regression Rate, Long-Term Shoreline Change Rate, Louisiana, National Assessment of Shoreline Change Project, North America, Pelican Island, Shoreline, Transect, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, environment, geoscientificInformation, oceans, Fewer tags National Fish Habitat Partnership (NFHP) 2010 HCI Scores - by HUC12 This shapefile contains summaries of habitat condition indices (HCI scores) from the National Fish Habitat Action Plan (NFHAP) 2010 National Assessments for 12 digit Hydrological Unit Codes (HUC12s) of the United States. Initial HCI scores were developed in three separate assessments (Conterminous U.S., Hawaii, and Alaska) due to differences in data availability across these regions. In the NFHAP 2010 Alaska assesment HCI values were already attributed to HUC12s. For this reason values for Alaska in this shapefile are identical to those represented in the Alaska assessment. To summarize data into HUC12s for the Conterminous United States and Hawaii a length-weighted average was used (i.e. the cumulative HCI score... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: 2010 National Assessment, 2010 National Assessment, Alabama, Alaska, Anthropogenic factors, All tags... Aquatic habitats, Arizona, Arkansas, California, Catchment areas, Colorado, Connecticut, Conterminous United States, Delaware, District of Columbia, Environmental conditions, Florida, Georgia, Habitat suitability, Hawaii, Idaho, Illinois, Indiana, Inland water environments, Iowa, Kansas, Kentucky, Landscape ecology, Louisiana, Lower 48 states, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, NFHP Cooperator, National Assessment Data, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, NoVisual, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, River basins, Rivers, South Carolina, South Dakota, Spatial Data, Spatial Data, Stream Characterization, Streams, Tennessee, Texas, USA, Utah, Virginia, Washington, Water quality measurement, West Virginia, Wisconsin, Wyoming, Fewer tags Groundwater withdrawal zones for drinking water from the Mississippi River Valley alluvial aquifer and Mississippi embayment aquifers Of the approximately 6.6 million people living in the Mississippi embayment (MISE) region in the central United States, approximately 65 percent rely on groundwater for their drinking water (Dieter, Linsey, and others, 2017). Regional assessments of water quality in principal aquifer systems provide context for the long-term availability of these water resources for drinking-water supplies. To assess the current (2018) status of water quality in MISE in relation to drinking water supplies, groundwater withdrawal zones used for domestic and public supply were modeled using available groundwater well and hydrogeologic framework data. Three dimensional surfaces were modeled to map the depth zones at which groundwater... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, OGC WFS Layer, OGC WMS Layer, Raster, Shapefile; Tags: Alabama, Arkansas, Hydrology, Illinois, Kentucky, All tags... Louisiana, Mississippi, Tennessee, USGS Science Data Catalog (SDC), Water Quality, Water Resources, aquifer, drinking water use, groundwater, water quality, Fewer tags BA-38 Habitat: Pelican 2013 The Louisiana State Legislature created Coastal Wetlands Planning, Protection, and Restoration Act (CWPPRA) in order to conserve, restore, create and enhance Louisiana's coastal wetlands. The wetland restoration plans developed pursuant to these acts specifically require an evaluation of the effectiveness of each coastal wetlands restoration project in achieving long-term solutions to arresting coastal wetlands loss. This data set includes mosaicked aerial photographs for the Pelican Island and Pass La Mer to Chaland Pass Resoration (BA-38) project for 2013. This data is used as a basemap habitat classification. It also serves as a visual tool for project managers to help them identify any obvious problems or land... Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: BA-38, CWPPRA, Coastal Louisiana, DEM, DOQQ, All tags... GIS, Gulf of Mexico, Louisiana, Louisiana, South Louisiana, aerial photography, coastal conservation, coastal enhancement, coastal restoration, habitat, image, monitoring, mosaic, rectification, satelite imagery, scan, wetlands, Fewer tags Conservation Priorities for Recreational Birding in the Southeast United States, by County (2011) Recreational birding is a popular activity in the United States. To assess the spatial distribution of recreational birding in the southeast, we combined two data sources: eBird (Sullivan et al. 2009) and the National Survey of Fishing, Hunting, and Wildlife-associated Recreation (NSFHWAR; US Department of Interior, Fish and Wildlife Service, and Department of Commerce 2011). We used spatial birding data from eBird to distribute the state-level NSFHWAR birding data by county and land protection status. This information was used to identify priority counties for conservation of birding areas. These are counties with a high level of birding activity where at least 90% of birding activity takes place on unprotected... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alabama, Arkansas, Data Visualization & Tools, Data and Information Sharing, Florida, All tags... Georgia, Louisiana, Mississippi, Missouri, North Carolina, Science Tools for Managers, South Carolina, Southeast CASC, Tennessee, birds, recreation, Fewer tags Structure Contour of the Top of the Middle Miocene Sequence, Gulf Coast The structure contours were created using biostratigraphic data in the Paleo-Data, Inc., Tenroc Regional Geologic Database. The depths of the microfossil locations were associated with the wells data provided by the Louisiana Department of Natural Resources. Because of the proprietary nature of the Tenroc database, no actual data can be shown and only those data points contained in the Louisiana State wells database are included in the control points layer. Contouring was accomplished in Dynamic Graphics, Inc., EarthVision modeling software (v.5) using minimum tension gridding. Three custom programs were used to convert contour lines generated from grids in EarthVision to Arc/Info coverages and then to shapefiles.... Categories: Data, pre-SM502.8; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Coal, Coalbed Methane, Coalbed methane resources, Contours, Earth Science, All tags... Economic geology, Energy Resources, Geology, Gulf Coast, Gulf Coast Framework Studies, LA, Louisiana, Miocene, Natural Gas, Natural Resources, Natural gas resources, Oil, Oil sand resources, Petroleum, Resource Assessment, Surface, Tertiary Systems, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States, economy, geoscientificInformation, gulfcoastframework, gulfroom, oilgas, Fewer tags Digital surfaces of the bottom altitude and thickness of the Mississippi River Valley alluvial aquifer and site data within the Mississippi Alluvial Plain project region Bottom altitudes of the Mississippi River Valley alluvial aquifer (MRVA) were compiled from interpretations of subsurface geophysical logs (log picks) at about 10,000 boreholes and wells located throughout the Mississippi Alluvial Plain (MAP) that were available from previous investigations. Five sources of the bottom altitude data are listed numerically in the Cross Reference section (below) and correspond with the Ref_code listed in the .shp dataset. Borehole geophysical data (log picks) were referenced (corrected) to the National Elevation Dataset (NED) 10-meter digital elevation model (DEM; https://nationalmap.gov/elevation.html). Log picks that required a DEM correction of less than 20 feet were retained for... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arkansas, Arkansas River, Cross Validation, Crowley's Ridge, Geostatistics, All tags... Kriging, Louisiana, Lower Mississippi-Gulf Water Science, Mississippi, Mississippi Alluvial Plain, Mississippi River, Mississippi River Delta, Mississippi River Valley Alluvial Aquifer, Mississippi Valley, Missouri, Tennessee, USGS Science Data Catalog (SDC), Variogram modeling, hydrogeology, Fewer tags Average Annual Precipitation (PRISM model) 1961 - 1990 This map layer shows polygons of average annual precipitation in thecontiguous United States, for the climatological period 1961-1990.Parameter-elevation Regressions on Independent Slopes Model (PRISM)derived raster data is the underlying data set from which the polygonsand vectors were created. PRISM is an analytical model that uses pointdata and a digital elevation model (DEM) to generate gridded estimatesof annual, monthly and event-based climatic parameters. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Alabama, Arizona, Arkansas, California, Climate, All tags... Colorado, Connecticut, Delaware, District of Columbia, Environment, Florida, Georgia, Geoscientific information, Idaho, Illinois, Indiana, Inland waters, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, PRISM, Pennsylvania, Precipitation, Rainfall, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, United States, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, Fewer tags National Fish Habitat Partnership (NFHP) 2010 HCI Scores - by HUC8 This shapefile contains summaries of habitat condition indices (HCI scores) from the National Fish Habitat Action Plan (NFHAP) 2010 National Assessments for 8 digit Hydrological Unit Codes (HUC8s) of the United States. Initial HCI scores were developed in three separate assessments (Conterminous U.S., Hawaii, and Alaska) due to differences in data availability across these regions. In the initial NFHAP 2010 Alaska assessment HCI values were attributed to HUC12s. For this reason, to summarize data into HUC8s for Alaska an area-weighted average was used (i.e. the cumulative HCI score assigned to each HUC12 within a HUC8 was weighted by reach area using the formula (H1*A1+H2*A2...+HX*AX)/(A1+A2...+AX) where H = HCI... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: 2010 National Assessment, 2010 National Assessment, Alabama, Alaska, Anthropogenic factors, All tags... Aquatic habitats, Arizona, Arkansas, California, Catchment areas, Colorado, Connecticut, Conterminous United States, Delaware, District of Columbia, Environmental conditions, Florida, Georgia, Habitat suitability, Hawaii, Idaho, Illinois, Indiana, Inland water environments, Iowa, Kansas, Kentucky, Landscape ecology, Louisiana, Lower 48 states, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, NFHP Cooperator, National Assessment Data, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, NoVisual, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, River basins, Rivers, South Carolina, South Dakota, Spatial Data, Spatial Data, Stream Characterization, Streams, Tennessee, Texas, USA, Utah, Virginia, Washington, Water quality measurement, West Virginia, Wisconsin, Wyoming, Fewer tags 1 2 3 4 5 »