Salt Creek, Lower Watershed TMDL


The Lower Salt Creek Watershed covers 203 square miles in South Central Indiana and is located primarily in Monroe, Lawrence, and Jackson counties. The primary bodies of water included in the Total maximum Daily Load (TMDL) report are Salt Creek, Goose Creek, May Creek, Little clear Creek, Wolf Creek, Jackson Creek, Knob Creek, and Hunter Creek.


A preliminary survey of Lower Salt Creek Watershed was conducted by Indiana Department of Environmental Management (IDEM) in 1992 with additional surveys in 1995, 1997, 2000, 2001, 2002, 2007, and 2012 through the probabilistic, targeted, and fish tissue sampling programs. Impairments in the watershed include E. coli, PCB, Mercury, and biological community impairments. Potential pollution sources in the watershed include nonpoint sources from agricultural lands and pastures, land application of manure and urban and rural run-off, as well as point sources from straight pipe discharges, and home sewage treatment system disposal.

Parameters To Be Addressed

IDEM will complete a comprehensive sampling program in the watershed that will be based on the current impairments. Approximately 27 sites will be assessed for general chemistry, nutrients, habitat, fish and macroinvertebrate communities, and stream flow. For a comprehensive list of all parameters please reference the approved work plan.


Lower Salt Creek public kickoff meetings will be held in November of 2015 to present the Project, and solicit public input.

Additional meetings will be held as needed. Please check the IDEM calendar for updates.

A draft TMDL meeting will be held in the autumn of 2016 once the comprehensive sampling program is complete.

The TMDL Report

  • The TMDL Report is to be completed by Summer 2017

Watershed Characterization Monitoring 2015-2016

Supplemental Information