States are required to develop TMDLs for the pollutants that cause each waterbody to not meet its designated use(s). The TMDL process establishes the allowable amount (i.e. “load”) of the pollutant that a waterbody can receive and still meet water quality standards for each designated use. The pollutant load must be established at a level necessary to implement the applicable water quality standards with seasonal variations and a Margin of Safety (MOS) to account for uncertainty.
By providing allowable loads and reductions, the TMDL can provide an analytical foundation for identifying, planning and implementing water quality-based controls to reduce pollution from identified sources. The ultimate goal is the restoration and maintenance of water quality in the waterbody so that designated uses are met. For more information on watershed planning and funding sources, visit the Watershed Management Branch
The approved TMDLs map is shown below and can be downloaded here
The approved TMDLs for Kentucky are listed below. Click on the links to access a copy of the report and a summary called the TMDL Synopsis.
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