We invite you to comment on the Mid-Yakima River Basin draft water quality improvement plan.
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We have drafted the Mid-Yakima River Basin Bacteria water quality improvement plan. This draft water quality improvement plan aims to address high bacteria levels in three sub-basins: Cowiche Creek, Moxee Drain, and Wide Hollow Creek. The goal of the water quality improvement plan is to identify water quality and riparian habitat improvements needed to support aquatic life and recreational uses in the Mid-Yakima River Basin. Once finalized and implemented, this plan should lead to more functional habitat for coho salmon, bull trout, and other species and ensure safe swimming, fishing, and boating.
The federal Clean Water Act requires states to develop a Total Maximum Daily Load (TMDL) — or water quality improvement project — plan for each water body on the state's polluted waters list, also known as the 303(d) list. This science-based approach assigns a numerical value that represents the highest amount of a pollutant a surface water body can receive and still meet the water quality standards. Learn more about the TMDL process.