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Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (1) Types Downloadable (1) Map Service (1) OGC WFS Layer (1) OGC WMS Layer (1) Shapefile (1) Contacts Cara Meinke USGS Forest and Rangeland Ecosystem Science Center Omernick, J. M. USGS, Snake River Field Station, GIS Laboratory Categories Data (1) Tag Types Theme (1) Place (1) Tag Schemes None (1) View Results as: JSON ATOM CSV

Aquatic Ecoregions of the Conterminous United States Ecoregions are based on perceived patterns of a combination of causal and integrative factors including land use, land surface form, potential natural vegetation, and soils (Omernik, 1987). Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aquatic, Conterminous, Ecoregion, Ecoregions, Omernik, All tags... Omernik's, US, USA, United States, Fewer tags