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This set of maps shows relative habitat quality for snakes that prefer the rocky outside margin of the bottomland area. Component layers (type and count of cover types, distance to bottomland boundary and distance to permanent water) are included, as are associated layers of channel boundaries, reaches, and bottomland kilometers.
This map shows allotments by ownership type, compiled from datasets obtained from BLM and USFS. Also shows current and near-term status and long-term potential for change.
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This map shows the potential current distribution of Gunnison sage-grouse, in the context of current and near-term terrestrial intactness and long-term potential for climate change and energy development.
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This map shows areas that have experienced fire between 1999 and 2010, including fire severity information where available. Determination of "change" due to fire is not possible due to the lack of highly accurate pre- and post-fire maps of vegetation conditions, and the wide range of possible interpretations of what constitutes a change. Instead, the focus was placed on mapping the location of fires and severity; the overall likelihood of significant change in short term vegetation conditions increases with fire severity.
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This map shows average seasonal minimum and maximum flow rates at major gaging stations. The period of record varies for each gaging station; averages were for the entire period of record up to 9/30/2010.
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The Virginia Department of Transportation (VDOT) Geologic Sections dataset consists of site-specific, large-scale geologic cross-sections (composite sheets). These sections were acquired from VDOT in order to save them from disposal. There are 5,500 geological profiles created for highway construction projects containing extensive core, auger and split-spoon logs at scales of 1:50 and 1:100 providing a unique record of subsurface geological and geotechnical data along roadways throughout Virginia. The thousands of feet of vertical subsurface data represents millions of dollars of investment in data acquisition by VDOT. The sections are useful as indicators of subsurface geology in large parts of Virginia. ...
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This study area consists of a 10-km inland buffer of the U. S. Great Lakes shoreline. Islands within the lakes were included in this invasive Phragmites mapping project where remotely sensed imagery scenes were available.
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These files were used to construct corridors estimating the extent of new coastal corridors exposed by reduced lake levels. They are included here to show the available horizontal extent of lidar-derived topo-bathymetric data and thus explicitly identify gaps and limitations of predicted corridor extents under various reduced lake level scenarios. In addition, these files provide users with a background layer that depicts the topographic variability of the submerged near-shore lake bed and terrestrial landscape.These files are 5m grid representations of the hydrographic and topographic data collected by the CHARTS system along the coasts of the U.S. sides of Lake Michigan, Lake Huron, Lake St. Clair, Lake Erie,...
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This collection of maps shows relative habitat quality for a suite of species that use riparian overstory habitats. Component layers include: tree patch size, presence and complexity of riparian understory, and abundance of tamarisk. Associated layers such as river channels at high flow and bottomland reaches are included for reference.
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Current national data resources for GAP include three primary data sets – land cover, protected areas, and species. Land Cover: The GAP/LANDFIRE National Terrestrial Ecosystems data, based on the NatureServe Ecological Systems Classification, are the foundation of the most detailed, consistent map of vegetation available for the United States. These data facilitate the planning and management for biological diversity on a regional and national scale. Learn more about GAP land cover data here: https://www.usgs.gov/core-science-systems/science-analytics-and-synthesis/gap/science/land-cover Protected Areas: The Protected Areas Database of the United States (PAD-US) is a national geodatabase, created by USGS GAP,...
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This data layer summarizes ecological systems and land cover classes described in state-level and national-level maps as Broadly Defined Habitats for groups of species of conservation concern. Each grid cell in the raster is assigned a Condition Index value based on desired condition metrics using ancillary datasets and a decision tree approach for each assessed habitat. Grid cells are also assigned bar code descriptors indicating which metrics contributed to the Condition Index score for that cell. This layer also contains information about potential habitats based on the LANDFIRE Biophysical Settings data layer. This layer was developed to support the next iteration of the Conservation Blueprint developed by the...
This dataset presents measures of landscape fragmentation calculated by FRAGSTATS at 4KM and HUC5 reporting unit levels. Fragmentation integrates the influence of urban, agriculture, invasive vegetation, roads, pipelines, utility lines, oil/gas wells, and water on patches of natural vegetation.
This map shows the current and historic distribution of this ecosystem, in the context of change agents and disturbance types, as well as current and near-term status and long term potential for change. This map includes current distribution from LANDFIRE EVT and NatureServe Landcover, and historic distribution from LANDFIRE BpS.
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This map shows the potential current distribution of yellow-breasted chat, in the context of current and near-term terrestrial intactness and long-term potential for climate change and energy development.
This map shows the location of EPA Level IV Ecoregions in the Colorado Plateau Ecoregion.
This map shows the current distribution of this ecosystem (from NatureServe Landcover), in the context of current and near-term status and long term potential for change.
This map shows the location of sensitive soils, which were extracted from SSURGO and STATSGO soil datasets.
map background search result map search result map Current National Data Resources for the Gap Analysis Project Riparian Overstory Model and Component Layers Rocky Fringe Snakes Model and Component Layers Lidar Topo-Bathymetry Forecasting Potential Phragmites Coastal Invasion Corridors Study Area Extent Colorado Plateau REA Conservation Elements - Terrestrial Ecosystems: Colorado Plateau Mixed Bedrock Canyon and Tableland Colorado Plateau REA Conservation Elements - Terrestrial Ecosystems: Rocky Mountain Gambel Oak-Mixed Montane Shrubland Colorado Plateau REA Conservation Elements - Terrestrial Species: Gunnison Sage-Grouse Colorado Plateau REA Conservation Elements - Terrestrial Species: Yellow-Breasted Chat Colorado Plateau REA EPA Level IV Ecoregions Colorado Plateau REA Indicators: Natural Vegetation Fragmentation Colorado Plateau REA MQ A2: Where are sensitive soils (including saline, sodic, gypsiferous, shallow, low water holding capacity)? Colorado Plateau REA MQ A4: Where are soils that have potential to have cryptogamic soil crusts? Colorado Plateau REA MQ B1: Where are lotic and lentic surface waterbodies and livestock and wildlife watering tanks and artificial water bodies? Colorado Plateau REA MQ B2: Where are perennial streams and stream reaches? Colorado Plateau REA MQ B3: What are seasonal discharge maxima and minima for the Colorado River and major tributaries at gaging stations? Colorado Plateau REA MQ E1: Where are the areas that have been changed by wildfire between 1999 and 2009? Colorado Plateau REA MQ H3: Where are allotments and type of allotment? Geologic Sections Collection VDOT (Virginia) Arkansas Broadly Defined Habitats Rocky Fringe Snakes Model and Component Layers Riparian Overstory Model and Component Layers Arkansas Broadly Defined Habitats Geologic Sections Collection VDOT (Virginia) Colorado Plateau REA Conservation Elements - Terrestrial Ecosystems: Colorado Plateau Mixed Bedrock Canyon and Tableland Colorado Plateau REA Conservation Elements - Terrestrial Species: Gunnison Sage-Grouse Colorado Plateau REA Conservation Elements - Terrestrial Species: Yellow-Breasted Chat Colorado Plateau REA EPA Level IV Ecoregions Colorado Plateau REA Indicators: Natural Vegetation Fragmentation Colorado Plateau REA MQ A4: Where are soils that have potential to have cryptogamic soil crusts? Colorado Plateau REA MQ B1: Where are lotic and lentic surface waterbodies and livestock and wildlife watering tanks and artificial water bodies? Colorado Plateau REA MQ B3: What are seasonal discharge maxima and minima for the Colorado River and major tributaries at gaging stations? Colorado Plateau REA MQ E1: Where are the areas that have been changed by wildfire between 1999 and 2009? Colorado Plateau REA MQ H3: Where are allotments and type of allotment? Lidar Topo-Bathymetry Colorado Plateau REA Conservation Elements - Terrestrial Ecosystems: Rocky Mountain Gambel Oak-Mixed Montane Shrubland Colorado Plateau REA MQ A2: Where are sensitive soils (including saline, sodic, gypsiferous, shallow, low water holding capacity)? Colorado Plateau REA MQ B2: Where are perennial streams and stream reaches? Forecasting Potential Phragmites Coastal Invasion Corridors Study Area Extent Current National Data Resources for the Gap Analysis Project