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Illinois River Watershed
Illinois River Watershed | Region 6 Water Programs | US EPA
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- Federal Register Notice- Call for Data
- TMDL Program
- Illinois River Watershed TMDLs (coming soon)
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Water Quickfinder
The Illinois River is a multi jurisdictional tributary of the Arkansas River, approximately 100 miles (160) km) long, between the States of Arkansas and Oklahoma. The Illinois River begins in the Ozark Mountains in the northwest corner of Arkansas (Washington County) and flows west into northeast Oklahoma. Once the Illinois River enters Oklahoma, it then flows southwest and south through the mountains of eastern Oklahoma into Tenkiller Ferry Lake. The Illinois River in Oklahoma is currently on the 303(d) list for total phosphorus, while tributaries to the Illinois River (e.g. Osage Creek, Muddy Fork, and Spring Creek) in Arkansas are also on the 303(d) list for total phosphorus.
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May 19, 2011 Meeting
January 6, 2011 Meeting
September 14, 2010 Meeting
February 4, 2010 Meeting
November 20, 2009 Meeting - Project Kickoff Meeting
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