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Marine Protected Areas Inventory
NOAA's Marine Protected Areas Inventory (MPA Inventory) describes all MPAs in U.S. waters, specifying where they are and what they do. This comprehensive geospatial database... -
EPA Data Commons
Directory of datasets from EPA -
USGS Surface Water Information
USGS Hydro-Climatic Data Network (HCDN-2009). This data set is very small, consisting of just an EXCEL file with information on USGS stream gage stations that are unaffected by...