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In cooperation with the South Carolina Department of Transportation (SCDOT), the U.S. Geological Survey prepared geospatial layers illustrating the boundaries of the regions used in the South Carolina (SC) Stream Hydrograph Methods presented in Bohman (1990,1992). The region limits were described in written text and depicted in figures in Bohman (1990, 1992), but have not been provided as geospatial layers (due to the age of the original publications). This project used best-available geospatial data from the U.S. Environmental Protection Agency (USEPA) ecoregions (2013) to create equivalent geospatial representations of the Bohman (1990, 1992) region boundaries for the SC Stream Hydrograph Methods. These layers...
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This layer represents the number of Tier 1 fish species known to occur in each HUC10 watershed in the state, according to data available in CPW’s fish database as of December 2014. There are 25 fish species on the Tier 1 SGCN list; a maximum of eight different species occur in the same watershed. This map is an indicator of species richness only; it does not consider relative habitat quality, or population metrics such as density or abundance, across watersheds.
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This shapefile represents the watersheds present within the Crown of the Continent Ecosystem (CCE) boundary.(Note: a different CCE boundary layer was used at the time of creation, so the area amounts within the CCE may not be accurate)This dataset was developed by the Crown Managers Partnership, as part of a transboundary collaborative management initiative for the Crown of the Continent Ecosystem, based on commonly identified management priorities that are relevant at the landscape scale. The CMP is collaborative group of land managers, scientists, and stakeholder in the CCE. For more information on the CMP and its collaborators, programs, and projects please visit: http://crownmanagers.org/
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This ArcView shapefile contains a representation of the South Carbon coalfield boundary. This area is part of the National Coal Resource Assessment in the Rocky Mountains and Northern Great Plains Region, and can be viewed in relation to roads, geology, and other relevant themes of this area.
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Reliable estimates of the magnitude and frequency of floods are an important part of the framework for hydraulic-structure design and flood-plain management. Annual peak flows measured at U.S. Geological Survey streamgages are used to compute flood-frequency estimates at those streamgages. However, flood-frequency estimates also are needed at ungaged stream locations. A process known as regionalization was used to develop regression equations to estimate the magnitude and frequency of floods at ungaged locations. This dataset contains the supporting tables and updated hydrologic region boundaries used in the 2017 flood-frequency study for Georgia, South Carolina, and North Carolina.
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This ArcView shapefile contains a polygon representation of the Green River Basin boundary. This boundary is a part of the National Coal Resource Assessment of the Northern Rocky Mountain and Great Plains Fort Union Coal Resources Assessment Area. This boundary can be shown in relation to other relevant themes in the Gren River Basin.
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According to ARS 45-402(13) "Groundwater basin" means an area which, as nearly as known facts permit as determined by the director pursuant to this chapter, may be designated so as to enclose a relatively hydrologically distinct body or related bodies of groundwater, which shall be described horizontally by surface description.
Boundary of Mississippi River Basin derived by dissolving WBD HU-4, July 2012 version.
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In 2013, the first of several Regional Stream Quality Assessments (RSQA) was done in the Midwest United States. The Midwest Stream Quality Assessment (MSQA) was a collaborative study by the U.S. Geological Survey (USGS) National Water Quality Assessment (NAWQA), the USGS Columbia Environmental Research Center, and the U.S. Environmental Protection Agency (USEPA) National Rivers and Streams Assessment (NRSA). One of the objectives of the RSQA, and thus the MSQA, is to characterize the relationships between water-quality stressors and stream ecology and to determine the relative effects of these stressors on aquatic biota within the streams (U.S. Geological Survey, 2012a). To meet this objective, a framework of fundamental...
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Aquatic Ecological Focus Areas were based on The Nature Conservancy’s priority streams and by the Special Aquatic Life Use streams defined by the Kansas Department of Health and Environment, with some exclusions based on expert opinion. The selected streams were buffered by 100 m; 12-digit HUCs that intersect the buffers comprise the EFAs.
    map background search result map search result map Mississippi River Basin Watershed Boundaries for the U.S. Geological Survey Midwest Stream Quality Assessment Colorado - Priority Watersheds for Tier 1 Aquatic SGCN Kansas - Aquatic Ecological Focus Areas groundwaterBasinADWR Crown of the Continent Watershed 1:24,000-scale hydrographic areas, middle Carson River basin, Nevada Green River Basin boundary, 1999 National Coal Resource Assessment (grbbndg.shp) Powder River Basin boundary, 1999 Coal Resource Assessment (prbbndg.shp) South Carbon coalfield boundary, Wyoming (scbndg) Magnitude and Frequency of Floods for Rural Streams in Georgia, South Carolina, and North Carolina, 2017-Data 1:24,000-scale hydrographic areas, Walker River Basin, California and Nevada Region Layers for USGS South Carolina Bohman Method Hydrograph in StreamStats South Carbon coalfield boundary, Wyoming (scbndg) groundwaterBasinADWR 1:24,000-scale hydrographic areas, Walker River Basin, California and Nevada 1:24,000-scale hydrographic areas, middle Carson River basin, Nevada Powder River Basin boundary, 1999 Coal Resource Assessment (prbbndg.shp) Green River Basin boundary, 1999 National Coal Resource Assessment (grbbndg.shp) Crown of the Continent Watershed Kansas - Aquatic Ecological Focus Areas Region Layers for USGS South Carolina Bohman Method Hydrograph in StreamStats Colorado - Priority Watersheds for Tier 1 Aquatic SGCN Magnitude and Frequency of Floods for Rural Streams in Georgia, South Carolina, and North Carolina, 2017-Data Watershed Boundaries for the U.S. Geological Survey Midwest Stream Quality Assessment Mississippi River Basin