Changes in anthropogenic influences on streams and rivers in the conterminous U.S. over the last 40 years, derived for 16 data themes

This product consists of time-series calculations of anthropogenic characteristics derived for 16 data themes for multiple scales covering the conterminous United States. The characteristics are those which (a) have consistent data sources, and (b) have the potential to affect the water quality of streams and rivers. All 16 data themes are provided for Hydrologic Unit Code level-10 (HUC-10) boundaries (n = 15,458). Additionally, measures of land use and imperviousness are provided for U.S. Environmental Protection Agency (USEPA) Level 4 ecoregions (n = 967) and for U.S. counties (n = 3,109). The data may be scaled up to broader areas; that is, HUC-10 data may be scaled up to HUC-8, 6, 4, or HUC-2 areas, Level 4...

Categories: Data; Tags: Atmospheric Deposition, Census of Agriculture, Conservation Practices, Conterminous US, Crop Reserve Program, All tags... Fertilizer, Geographic Information Systems, Geospatial Datasets, Housing, Hydrologic Modifications, Imperviousness, Land use, Land use change, NHDPlus, National Water Quality Program, Nitrogen application, Phosphorus application, Population change, Riparian Land Use, Road Salt, Trends, USGS Science Data Catalog (SDC), United States, Urbanization, Waste Water Treatment Plants, Water Use, Watershed, inlandWaters, Fewer tags