Total Maximum Daily Loads (TMDL) Implementation Evaluations
Framework for TMDL Implementation Evaluation
In accordance with the Montana Water Quality Act (MCA 75-5-703 (7) and (9)), MDEQ is required to assess the waters for which TMDLs have been completed to determine whether compliance with water quality standards has been attained. This assessment will use the suite of objectives specified in the TMDL document to measure compliance with water quality standards and achievement of full support of all applicable beneficial uses.
The outline below describes the evolving framework and components for the DEQ TMDL Implementation Evaluation (TIE). The TIE should document progress made toward meeting: TMDL objectives, water quality standards, and beneficial uses in the impaired water bodies. Although these assessments will likely require different sets of data for evaluation, each may be evaluated as part of the evaluation. It is important to note that elements of the implementation strategy are largely voluntary in nature for nonpoint pollution sources. The purpose of the TIE is to:
- Recognize and document implementation of reasonable land, soil, and water conservation practices;
- Assist in determining the effectiveness of those practices on water quality improvement;
- Assess progress towards meeting water quality standards;
- Provide recommendations for changes in implementation activities, monitoring, or address changes in the watershed that are likely to impact water quality;
- Promote TMDL implementation and beneficial use support.
Final Total Maximum Daily Load documents can be found on the DEQ Final Documents and EPA Approval Letters for Completed TMDLs web page.
| Location | Reports |
|---|---|
| Deep Creek | Deep Creek TMDL Implementation Evaluation, November 2011 (0.81MB) |
| Cooke City | Cooke City TMDL Implementation Evaluation, July 2011 (0.70MB) |
| Upper Lolo | Upper Lolo Sediment TMDL Implementation Evaluation, May 2011 (0.53MB) |
| Big Creek (Columbia Basin) | Big Creek Sediment TMDL Implementation Evaluation, March 2011 (0.83MB) |
