Directory of Projects
Select by County
Choose the first letter the county below to find more information about the water quality improvement projects happening in that county.
Get more information and data
Links provide more information by taking you to the water quality improvement project page by county where you can find quick information such as what pollutants are being dealt with, the status of the project, and contact information. Once on the county pages you will be able to click links to view publications related to a project, go to the Water Quality Atlas, or the specific project website.
Summary of water quality improvement projects listed by county
For more specifics on any of these projects click on the county name. Water Resource Inventory Areas (WRIA) [link] is the unit of area that relates to how we typically study and regulate water resources.
| County | TMDL (s) | WRIA (s) |
|---|---|---|
| Adams | Palouse River | 34, 36, 41, 43 |
| Asotin | No TMDL projects | 35 |
| Benton | Yakima River | 31, 37, 40 |
| Chelan | Lake Chelan, Mission Creek, Wenatchee River Watershed | 40, 45, 46, 47 |
| Clallam | Strait of Juan de Fuca, Dungeness Bay, Matriotti Creek | 17, 18, 19, 20 |
| Clark | Burnt Bridge Creek, Gibbons Creek, Lacamas Creek, Lewis River, Salmon Creek, Weaver Creek | 27, 28 |
| Columbia | No TMDL projects | 32, 33, 35 |
| Cowlitz | Upper Chehalis River Watershed | 23, 25, 26, 27 |
| Douglas | No TMDL projects | 41, 42, 44, 50 |
| Ferry | Colville National Forest | 51, 52, 53, 58, 60 |
| Franklin | Lower Snake River | 33, 34, 36 |
| Garfield | Pataha Creek, Middle Snake River, Tucannon-Pataha Creeks, | 35 |
| Grant | Upper Crab Creek, Moses Lake | 36, 41, 42, 43, 44, 53 |
| Grays Harbor | Chehalis River Basin - Simpson Timberlands, Upper Chehalis River; Humptulips River | 16, 21, 22, 23, 24 |
| Island | No TMDL projects | 6 |
| Jefferson | Skokomish River | 16, 17, 18, 20, 21 |
| King | Bear-Evans Creek Basin, Cottage Lake, Duwamish and Lower Green River, Fauntleroy Creek, Fenwick Lake, Green River and Newaukum Creek, Issaquah Creek Basin, Lake Sawyer, Little Bear Creek, Newaukum Creek, North Creek, Pipers Creek, Sammamish River, Snoqualmie River, Soos Creek | 7, 8, 9, 10, 15 |
| Kitsap | Liberty Bay Tributaries, Sinclair-Dyes Inlets, Union River | 15 |
| Kittitas | Crystal Creek, Naches River, Teanaway River, Wilson Creek Sub-Basin, Upper Yakima River | 38, 39, 40 |
| Klickitat | Little Klickitat River Watershed | 29, 30, 31, 37 |
| Lewis | Chehalis River Basin, Nisqually Watershed | 11, 13, 23, 24, 25, 26 |
| Lincoln | Upper Crab Creek | 34, 41, 42, 43, 53, 54 |
| Mason | Black River, Chehalis River, Oakland Bay, Skokomish River, Totten/Eld Inlets Tributaries, Union River | 14, 15, 16, 22 |
| Okanogan | Lower Okanogan River, Similkameen River | 47, 48, 49, 50, 51, 52, 53, 60 |
| Pacific | Lower Willapa River | 22, 23, 24, 25 |
| Pend Oreille | Colville National Forest, Little Spokane River, Pend Oreille River | 55, 57, 59, 61,62 |
| Pierce | Clarks and Meeker Creek, Clover Creek, Commencement Bay, Commencement Bay, Puyallup River Watershed, South Prairie Creek, Wapato Lake | 10, 11, 12, 15, 26 |
| San Juan | No TMDL projects | 2 |
| Skagit | Campbell Lake, Erie Lake, Padilla Bay, Samish Watershed, Skagit Basin, Stillaquamish River | 1, 3, 4, 5 |
| Skamania | East Fork Lewis River, Wind River | 26, 27, 28, 29 |
| Snohomish | Ballinger Lake, Bear-Evans Creek Basin, French and Pilchuck Creeks, Lake Ketchum, Lake Loma, Little Bear Creek, North Creek, Old Stillaguamish Channel, Snohomish/Snoqualmie Rivers, Stillaguamish River, Swamp Creek | 3, 4, 5, 7, 8 |
| Spokane | Dragoon Creek, Hangman/Latah creeks, Liberty Lake, Little Spokane River, Newman Lake, Long Lake (Lake Spokane), Spokane River | 34, 43, 54, 55, 56, 57 |
| Stevens | Colville National Forest, Colville River, Little Spokane River | 54, 55, 58, 59, 60, 61, 62 |
| Thurston | Deschutes River and Tributaries, Budd Inlet, Upper Chehalis River Watershed, Henderson Inlet Watershed, Nisqually Watershed, Totten/Eld Inlets Tributaries | 11, 13, 14,23 |
| Wahkiakum | No TMDL projects | 24, 25 |
| Walla Walla | Mill Creek, Walla Walla | 32,33 |
| Whatcom | Bellingham Bay, Johnson Creek, Lake Whatcom, Nooksack River, South Fork Nooksack, Sumas River, Whatcom Creek, Whatcom, Squalicum and Padden Creeks | 1, 3, 4 |
| Whitman | Palouse River | 34, 35, 56 |
| Yakima | Granger Drain, Giffin Lake, Upper Naches River, Selah Ditch, Tieton and Lower Naches Rivers, Yakima River | 31, 37, 38, 39 |
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