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This mapping documents the changes in extent and condition of vernal pool habitat in the Great Valley between 2005 and 2012. "Vernal pool habitat" is defined as vernal pools and the surrounding upland (typically grassland) habitat matrix. The 2005 basemap was created by using double-blind mapping protocol and included 21.4 million acres in and surrounding the Sacramento and San Joaquin valleys (Witham et al 2013). The area included in the 2012 remapping effort focused on the 807,820 acres identified in the 2005 map and areas immediately surrounding the previously mapped polygons. Special attention was paid to areas where habitat was being created through mitigation banking. The result of the 2012 remapping shows...
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According to the US Fish and Wildlife Service records, confirmed hibernation and maternity sites for this species occur in the hydrologic units included in this shapefile. The polygons included in this shapefile are hydrologic unit boundaries that are known to contain Northern Long-Eared Bat hibernation and/or maternity sites. If a project falls within you may need a permit for the project. For questions about ESA permits or Northern long-eared bats, you can contact the Asheville Field Office at 828/258-3939.
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Coastal Mean High Water (MHW) is contoured in intertidal zones open to oceans, behind barrier coasts in bays, lagoons, and estuaries, and sometimes where tidal currents reach upstream (landward) of the embayed foreshore water bodies. In the National Geospatial Program (NGP) surface water hydrography maintained in the Nation Hydrography Dataset (NHD) Flowline Network projects Mean High Water level (MHW) as the linear-referenced 1:24,000-scale resolution NHD Coastline (http://nhd.usgs.gov/). NHDCoastline Geomorphology and associated Risk line-event feature classes that rank the relative risk of horizontal erosion on a scale of 1 to 5 (least to most risk, respectively) have been developed using the Hydrography Event...
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Coastal Mean High Water (MHW) is contoured in intertidal zones open to oceans, behind barrier coasts in bays, lagoons, and estuaries, and sometimes where tidal currents reach upstream (landward) of the embayed foreshore water bodies. In the National Geospatial Program (NGP) surface water hydrography maintained in the Nation Hydrography Dataset (NHD) Flowline Network projects Mean High Water level (MHW) as the linear-referenced 1:24,000-scale resolution NHD Coastline (http://nhd.usgs.gov/). NHDCoastline Geomorphology and associated Risk line-event feature classes that rank the relative risk of horizontal erosion on a scale of 1 to 5 (least to most risk, respectively) have been developed using the Hydrography Event...
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Coastal Mean High Water (MHW) is contoured in intertidal zones open to oceans, behind barrier coasts in bays, lagoons, and estuaries, and sometimes where tidal currents reach upstream (landward) of the embayed foreshore water bodies. In the National Geospatial Program (NGP) surface water hydrography maintained in the Nation Hydrography Dataset (NHD) Flowline Network projects Mean High Water level (MHW) as the linear-referenced 1:24,000-scale resolution NHD Coastline (http://nhd.usgs.gov/). NHDCoastline Geomorphology and associated Risk line-event feature classes that rank the relative risk of horizontal erosion on a scale of 1 to 5 (least to most risk, respectively) have been developed using the Hydrography Event...


    map background search result map search result map National Hydrography Dataset Coastline Geomorphology and Risk Line-Events for the conterminous US Pacific Coast Northern Long-Eared Bat Modified HUC 12 Boundaries of Occupancy in North Carolina National Hydrography Dataset Coastline Geomorphology and Risk Line-Events for the conterminous US Gulf of Mexico National Hydrography Dataset Geomorphology and Risk Line-Events for the conterminous US Atlantic Coast Vernal Pools in California, 2012 Northern Long-Eared Bat Modified HUC 12 Boundaries of Occupancy in North Carolina Vernal Pools in California, 2012 National Hydrography Dataset Coastline Geomorphology and Risk Line-Events for the conterminous US Pacific Coast National Hydrography Dataset Coastline Geomorphology and Risk Line-Events for the conterminous US Gulf of Mexico National Hydrography Dataset Geomorphology and Risk Line-Events for the conterminous US Atlantic Coast