1.0 DCPLUS 20210827 20151600 20230405 20151600 https://www.arcgis.com/sharing/rest/content/items/7b34c37c64b64c559a5d887f974f24ba/info/thumbnail/thumbnail1635882262956.png https://www.arcgis.com/home/item.html?id=7b34c37c64b64c559a5d887f974f24ba 7b34c37c64b64c559a5d887f974f24ba Feature Service https://services.arcgis.com/cJ9YHowT8TU7DUyn/arcgis/rest/services/Percent_HUC12_SWPA/FeatureServer Percent HUC12 in Source Water Protection Area (Surface) Source Water Protection Drinking Water Water Watershed Watershed Protection Intake Source Water Source Protection The percent watershed land area in a surface water Source Protection Area (SPA) for each HUC12 unit in the NHDPlus version 2.1 National Watershed Boundary Dataset snapshot (Feb 2012). This map service/dataset provides the HUC12 percent area located in a surface water Source Protection Area (SPA) for each HUC12. Surface water SPA delineations are composed of NHDPlus version 2.1 catchments located 24-hour time of travel upstream of all georeferenced surface water source facilities (i.e., active intakes, reservoirs, infiltration galleries, and springs). SPA delineations in Alaska represent a 1-mile buffer radius due to limited availability of NHDPlus catchments in Alaska. Percent SPA area was calculated by dividing the HUC12 area located within a SPA by the total area of the HUC12. Drinking water system surface water source facility location data were obtained from the Safe Drinking Water Information System/Federal Version (SDWIS/FED). Exact locations of drinking water facilities, SPAs, and Public Water System IDs are not provided. This map layer is intended to show areas of interest for the protection of surface water sources of drinking water. None. Please check sources, scale, accuracy, publication date and other available information. Please confirm that you are using the most recent copy of both data and metadata. While EPA has used its best efforts to include complete and accurate information in this system, EPA cannot be held responsible for errors or omissions and is not liable for any direct, indirect or consequential damages resulting from using this information. Reliance on the information contained in this system by any party cannot be used as a defense in any administrative or judicial proceeding. In such proceedings, the specific language of the relevant regulation or statute is binding. Acknowledgement of the EPA would be appreciated. -179.99998854085328 -14.765636459028876 73.4284203727736 -29.34685210377809 1 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7b34c37c64b64c559a5d887f974f24ba https://services.arcgis.com/cJ9YHowT8TU7DUyn/arcgis/rest/services/Percent_HUC12_SWPA/FeatureServer Feature Service EPSG