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Federal
Hydro-Climatic Data Network (HCDN) -- A USGS Streamflow Data Set for the U.S. for the Study of Climate Fluctuations recent views
Department of the Interior —
A streamflow data set, which is specifically suitable for the study of surface-water conditions throughout the United States under fluctuations in the prevailing... -
Federal
Digital data set describing surficial geology in the conterminous US recent views
Department of the Interior —
This digital data set describes surficial geology of the conterminous United States. The data set was generated from a U.S. Geological Survey 1:7,500,000-scale map of... -
Federal
Attributes for NHDPlus Catchments (Version 1.1)for the Conterminous United States: Contact Time, 2002 recent views
Department of the Interior —
This data set represents the average contact time, in units of days, compiled for every catchment of NHDPlus for the conterminous United States. Contact time, as...