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IWS Basins: Delaware River, Upper Colorado, and Illinois River

Detailed Description

Selected reference basins—referred to as Integrated Water Science (IWS) basins (labeled watersheds outlined in gray)—are serving as regional focus areas for intensive observation, understanding, prediction, and delivery of data and information in support of deep, integrated assessments of water availability that can be extended to the broader region (colored areas) and ultimately to the Nation. To date (2020), three basins have been selected for intensive study, the Delaware River Basin, the headwaters of the Colorado and Gunnison River Basin (Upper Colorado River Basin) and the Illinois River Basin.


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