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1. Colorado Watershed Boundary Dataset (WBD) Hydrologic Unit 12

U.S. Geological Survey, U.S. Department of Agriculture - Natural Resource Conservation Service, and U.S. Environmental Protection Agency. The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for del... U.S. Geological Survey (USGS),U.S. Department of Agriculture - Natural Resource Conservation Service (NRCS),U.S. Environmental Protection Agency (EPA),Other Federal, State, and local partners (see dataset specific metadata for details http://nhd.usgs.gov/wbd_metadata.html).
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2. Colorado Watershed Boundary Dataset (WBD) Hydrologic Unit 8

U.S. Geological Survey, U.S. Department of Agriculture - Natural Resource Conservation Service, and U.S. Environmental Protection Agency. The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for del... U.S. Geological Survey, U.S. Department of Agriculture - Natural Resource Conservation Service (NRCS), U.S. Environmental Protection Agency.
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3. Colorado Watershed Boundary Dataset (WBD) Hydrologic Unit 10

U.S. Geological Survey, U.S. Department of Agriculture - Natural Resource Conservation Service, and U.S. Environmental Protection Agency. The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for del... U.S. Geological Survey, U.S. Department of Agriculture - Natural Resource Conservation Service, U.S. Environmental Protection Agency.