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Filters: Tags: biological diversity (X) > Types: OGC WMS Layer (X)

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Ecological assessment data from the USGS National Water-Quality Assessment Program and the USEPA National River and Stream Assessment were reviewed and records were retained from sampling sites co-located with active USGS stream gages. A limited amount of ancillary data, including location, physical watershed features, and basic water chemistry data for each site were also retained.


    map background search result map search result map Matched ecological assessment and stream gaging data for the CONUS Matched ecological assessment and stream gaging data for the CONUS