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Water Quality Improvement Projects (TMDLs)

Water Resource Inventory Area (WRIA) 38 map, Washington State.

WRIA 38: Naches

The following table lists overview information and links to specific water quality improvement projects (including total maximum daily loads, or TMDLs) for this water resource inventory area (WRIA). Please use links (where available) for more information on a project.

Yakima River basin project index:


Project Name Pollutant(s) Status** TMDL Lead
Naches River, Upper

Cowiche Creek

Temperature Approved by EPA Laine Young
Tieton and Lower Naches Rivers


  • Tieton River
  • Lower Naches River
Temperature   Laine Young
Yakima River, Mid Basin Tributaries Fecal Coliform

Moxie Drain
Wide Hollow
Cowiche Creek

Under Development Greg Bohn

Moxie Drain
Wide Hollow

  Laine Young
Yakima River Toxics Under Development Jane Creech

** Status will be listed as one of the following: Approved by EPA, Under Development or Implementation. No status means project work has not yet started.

For more information about WRIA 38:

* The Department of Ecology and other state resource agencies frequently use a system of 62 "Water Resource Inventory Areas" or "WRIAs" to refer to the state's major watershed basins.


Last updated December 2013