Protecting Public Health and the Environment.

Water Quality Plans & Reports in DEQ's Twin Falls Region

This region boasts a myriad of water resources: renowned hot springs; lakes, reservoirs, and rivers that attract anglers, boaters, and swimmers; and the Lower Portneuf River Valley Aquifer that supplies drinking water to tens of thousands of Idahoans. Economic activities in this portion of the state include phosphate mining and processing and agricultural production of wheat, potatoes, and sugar beets. These activities have the potential to impact the region's water quality.

Subbasin Assessments and Total Maximum Daily Loads

Listed below are subbasins in which subbasin assessments (SBAs) and/or total maximum daily loads (TMDLs) have been completed for water bodies in DEQ's Twin Falls Region. Click on the subbasin name to link to an overview of water quality in the subbasin, a list of streams and pollutants for which TMDLs were developed, and related documents, including subbasin assessments and TMDLs, addenda, implementation plans, and 5-year reviews. (Access the statewide list of SBAs/TMDLs here.)

Ground Water Studies and Reports

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Staff Contacts

Surface Water Quality Manager
Sean Woodhead
DEQ Twin Falls Regional Office
650 Addison Avenue West, Suite 110
Twin Falls, ID 83301
(208) 736-2190

Related Pages

Total Maximum Daily Loads (TMDLs): Water Quality Improvement Plans

Ground Water in Idaho