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Impaired Waters and TMDLs

Impaired Waters and TMDLs in Region 7

Map of Region 7
Serving Iowa, Kansas, Missouri, Nebraska and Nine Tribal Nations.

Region 7's water priority is protecting and improving water quality across America's greatest watershed, the Missouri-Mississippi Basin.

Basic Information

Impaired Waters in Region 7

TMDLs in Region 7 by State

Region 7 Information

On this page:

Public Notices for CWA 303(d) Impaired Waters Lists and TMDLs in Region 7

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TMDL Public Notices

 

CWA 303(d) List of Impaired Waters Public Notices

*Public Notice links provided here are for informational purposes only and do not convey EPA approval of documents on public notice.

 

Highlighted TMDLs and TMDL Alternatives in Region 7

Cheney Lake, Kansas, TMDL Approved 5/4/2017

Sailboats on Cheney LakeCheney Lake is a reservoir constructed in the early 1960s as a water supply system for Wichita and recreational resource for the area. It’s located south of Hutchinson, Kansas, and west of Wichita, Kansas. Counties around Lake Cheney include Kingman, Pratt, Reno, Sedgwick and Stafford. The newly approved TMDL revises a TMDL from 2000 for Eutrophication.

Map of Cheney Lake in KansasCheney Lake Watershed in KansasThe Lake’s designated uses are impaired by eutrophication based on assessment data collected by the Kansas Department of Health and Environment and the United States Geological Survey. Excessive nutrient loads are contributing to increased Chlorophyll a (domestic water supply criterion), and increased objectionable algal blooms impairing the primary contact recreation use and expected aquatic life use. The revised TMDL has a lower Total Phosphorus load, includes a more robust analysis of pollutant sources and adds a new load for Total Nutrients. A Chlorophyll a endpoint of 10 micrograms per liter achieved by reductions in Total Phosphorus and Total Nitrogen is the numeric link to the narrative water quality standards protective of Lake Cheney’s uses. It’s one of the premier sailing lakes in the nation with ample fishing (channel catfish and white bass, crappie, striped bass, wipers, and walleye), three swimming areas and many recreational sports. Through a phased implementation of the TMDL’s targets, all uses of the lake will be met. Read the TMDL.

Mussel Fork Creek, Missouri, TMDL Approved 06/14/2017Mussel Fork WatershedMussel Fork in Missouri

Mussel Fork Creek flows 29 miles through Adair, Linn, Macon and Sullivan counties in Missouri. Located just west  of Kirksville, Missouri, Mussel Fork is classified as a Class C Stream, meaning that it may cease to flow during dry periods, but maintain permanent pools that support aquatic life. The E. Coli TMDL addresses the pathogen impairment of Mussel Fork’s Whole Body Contact Recreation Category B and Secondary Contact Recreation uses. See the TMDL for other uses.

The TMDL document identifies both point and nonpoint sources of bacteria. The eight permitted sources in the watershed are comprised of two municipal facilities, five concentrated animal feeding operations and one land disturbance site. While the nonpoint sources identified in the TMDL are agricultural runoff from cropland or grassland and livestock production where bacteria is likely generated from over application of manure. The TMDL document expresses the loading capacity as Escherichia coli counts per day. The loading capacity in the TMDL is determined to attain and maintain the water quality standard for Mussel Creek. Read the TMDL.

Swans on Upper Pine Lake in IowaUpper Pine Lake, IA
Photo courtesy of Jay McGavren

Upper Pine Lake, Iowa, TMDL Approved 10/23/2014

Upper Pine Lake is a man-made impoundment built by the Civilian Conservation Corps in 1935. It is located approximately 2 miles northeast of Eldora, or 15 miles southeast of Iowa Falls, in Hardin County, Iowa. The lake lies within Pine Lake State Park, which encompasses 572 acres and is managed by the Iowa Department of Natural Resources. Recreational opportunities include fishing, bird watching, boating, camping, cabin rental, hiking and swimming. Read the TMDL.

Beaver Lake, Iowa, TMDL Approved 11/03/2014

Beaver Lake is a 28.9 acre man-made lake surrounded by a 1,026 acre watershed in Dallas County, Iowa. The lake is surrounded by a 299 acre wildlife management area. The dam that impounds Beaver Lake was constructed in 1989. Currently, the lake is about 38.8 feet deep at the deepest point, with an average depth of 9.5 feet. Read the TMDL.

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State and Tribal Programs for CWA 303(d) in Region 7

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State TMDL Programs in Region 7

State 303d Listing (Impaired Waters) Programs in Region 7

Tribal Environmental/Water Programs in Region 7

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EPA TMDL and 303(d) Listing Program Contacts in Region 7