Total Maximum Daily Loads (TMDL)

In the mid-2000s, BWC began working with the Montana Department of Environmental Quality (DEQ) to develop plans for Total Maximum Daily Loads (TMDLs) for the lower Beaverhead Watershed. DEQ is EPA’s designated management authority for protecting state waters and has worked with dozens of watershed groups throughout the state to develop and implement TMDLs. BWC’s role in this process is to assist DEQ in identifying the causes and sources of watershed problems, work with a coalition of stakeholders to find and implement solutions, and develop a locally-based, locally-driven Watershed Restoration Plan.

Learn more about TMDLS.

Watershed Restoration Plans

In 2013, the first Watershed Restoration Plan for the Lower Beaverhead was completed. It included projects on Stone Creek, Spring Creek, Dyce Creek, Clark Canyon Creek, and Poindexter Slough which were completed by 2017. BWC began writing a second Watershed Restoration Plan in 2017 to lay out a plan for the next five years in the lower Beaverhead watershed. The main focus of this plan was to prioritize projects in the Grasshopper and Blacktail-Deer Creek Basins. If you have any comments or concerns that would like to be identified in the Watershed Restoration Plan, please email

View the 2013 Lower Beaverhead Watershed Restoration Plan here.


In 2017, BWC hired an assistant watershed coordinator, Zach Owen, to focus on enhancing the upper end of the Beaverhead Watershed including horse prairie and red rock basins. DEQ has been monitoring these basins to create TMDL documents since 2015. Once the data has been collected and assessed, a Watershed Restoration Plan will be written for the upper end of the Beaverhead Watershed. If you have any comments of concerns that you would like to be identified in the Watershed Restoration Plan, please email