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Colorado Water-Quality Data Repository

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The Colorado Water-Quality Data Repository will be taken offline on September 30, 2016. Contact Jude Thomas with any questions.
Aspen, Colorado. Photo by Jeffrey Foster.

Aspen, Colorado. Photo by Jeffrey Foster.


CWQDR Study Areas

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The U.S. Geological Survey, in cooperation with other government agencies, stakeholder groups, and private entities, is maintaining a water-quality database for selected study areas in Colorado. This database combines water-quality data from the USGS National Water Information System (NWIS) and the U.S. EPA STORET databases. Additional relevant datasets from a variety of other sources also are being included. These data can be retrieved by using this website — begin by selecting a study area of interest.

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Page Last Modified: Wednesday January 09 2013