Water Quality Improvement Projects
Listed by WRIA and County

Please select project area by using the list of counties or the list of WRIAs ¹.

Select by WRIA

WRIAs	County
01 - Nooksack	Skagit Whatcom
02 - San Juan	San Juan
03 - Lower Skagit-Samish	Skagit Snohomish Whatcom
04 - Upper Skagit	Skagit Snohomish Whatcom
05 - Stillaguamish	Skagit Snohomish
06 - Island	Island
07 - Snohomish	King Snohomish
08 - Cedar-Sammamish	King Snohomish
09 - Duwamish-Green	King
10 - Puyallup-White	King Pierce
11 - Nisqually	Lewis Pierce Thurston
12 - Chambers-Clover	Pierce
13 - Deschutes	Lewis Thurston
14 - Kennedy-Goldsborough	Mason Thurston
15 - Kitsap	King Kitsap Mason
16 - Skokomish_Dosewallips	Grays Harbor Jefferson Mason
17 - Quilcene-Snow	Clallam Jefferson
18 - Elwha_Dungeness	Clallam Jefferson
19 - Lyre-Hoko	Clallam
20 - Soleduck-Hoh	Clallam Jefferson
21 - Queets-Quinault	Grays Harbor Jefferson
22 - Lower Chehalis	Grays Harbor Mason Pacific
23 - Upper Chehalis	Cowlitz Grays Harbor Lewis Pacific Thurston
24 - Willapa	Grays Harbor Lewis Pacific
25 - Grays-Elochoman	Cowlitz Lewis Pacific Wahkiakum
26 - Cowlitz	Cowlitz Lewis Pierce Skamania Yakima
27 - Lewis	Clark Cowlitz Skamania
28 - Salmon-Washougal	Clark Skamania
29 - Wind-White Salmon	Klickitat Skamania Yakima
30 - Klickitat	Klickitat Yakima
31 - Rock-Glade	Benton Klickitat Yakima
32 - Walla Walla	Columbia Walla Walla
33 - Lower Snake	Columbia Franklin Walla Walla
34 - Palouse	Adams Franklin Lincoln Spokane Whitman
35 - Middle Snake	Asotin Columbia Garfield Whitman
36 - Esquatzel Coulee	Adams Franklin Grant
37 - Lower Yakima	Benton Klickitat Yakima
38 - Naches	Kittitas Yakima
39 - Upper Yakima	Kittitas Yakima
40 - Alkali-Squilchuck	Benton Chelan Kittitas Yakima
41 - Lower Crab	Adams Douglas Grant Lincoln
42 - Grand Coulee	Douglas Grant Lincoln
43 - Upper Crab-Wilson	Adams Grant Lincoln Spokane
44 - Moses Coulee	Douglas Grant
45 - Wenatchee	Chelan
46 - Entiat	Chelan
47 - Chelan	Chelan Okanogan
48 - Methow	Okanogan
49 - Okanogan	Okanogan
50 - Foster	Douglas Okanogan
51 - Nespelem	Okanogan
52 - Sanpoil	Ferry Okanogan
53 - Lower Lake Roosevelt	Ferry Grant Lincoln
54 - Lower Spokane	Lincoln Spokane Stevens
55 - Little Spokane	Pend Oreille Spokane Stevens
56 - Hangman	Spokane Whitman
57 - Middle Spokane	Pend Oreille Spokane
58 - Middle Lake Roosevelt	Ferry Stevens
59 - Colville	Pend Oreille Stevens
60 - Kettle	Ferry Okanogan Stevens
61 - Upper Lake Roosevelt	Pend Oreille Stevens
62 - Pend Oreille	Pend Oreille Stevens

Select by County

County	WRIA(s)⁽¹⁾
Adams	34, 36, 41, 43
Asotin	35
Benton	31, 37, 40
Chelan	40, 45, 46, 47
Clallam	17, 18, 19, 20
Clark	27, 28
Columbia	32, 33, 35
Cowlitz	23, 25, 26, 27
Douglas	41, 42, 44, 50
Ferry	51, 52, 53, 58, 60
Franklin	33, 34, 36
Garfield	35
Grant	36, 41, 42, 43, 44, 53
Grays Harbor	16, 21, 22, 23, 24
Island	6
Jefferson	16, 17, 18, 20, 21
King	7, 8, 9, 10, 15
Kitsap	15
Kittitas	38, 39, 40
Klickitat	29, 30, 31, 37
Lewis	11, 13, 23, 24, 25, 26
Lincoln	34, 41, 42, 43, 53, 54
Mason	14, 15, 16, 22
Okanogan	47, 48, 49, 50, 51, 52, 53, 60
Pacific	22, 23, 24, 25
Pend Oreille	55, 57, 59, 61, 62
Pierce	10, 11, 12, 15, 26
San Juan	2
Skagit	1, 3, 4, 5
Skamania	26, 27, 28, 29
Snohomish	3, 4, 5, 7, 8
Spokane	34, 43, 54, 55, 56, 57
Stevens	54, 55, 58, 59, 60, 61, 62
Thurston	11, 13, 14, 23
Wahkiakum	24, 25
Walla Walla	32, 33
Whatcom	1, 3, 4
Whitman	34, 35, 56
Yakima	26, 27, 29, 30, 31, 37, 38, 39, 40

Columbia River TMDL Projects

¹ The Department of Ecology and other state resource agencies frequently use a system of "Watershed Resource Inventory Areas" or "WRIAs" to refer to the state's major watershed basins.

Last updated March 2012

Water Quality Improvement Projects Listed by WRIA and County

Select by WRIA

Select by County

Water Quality Improvement Projects
Listed by WRIA and County