Washington Reservoirs & Dams | Water Storage Levels

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WASHINGTON RESERVOIR LEVELS

April 14 2025

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Reservoirs & Dams

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Name	Year Built	Normal Storage	Dam Height	Max Discharge	Hazard Potential	Drainage Area
Wenas Dam	1911	3200		29000	High	114
Chelan	1927	676100	33	39100	Significant	952
Sinlahekin Dam No 3	1950	304		0	High	70
Sinlahekin Dam No 2	1949	52		0	High	64
Sinlahekin Dam No 1	1949	175		0	High	64
Boundary	1967	95000	340	360000	High	25200
Power Lake Dam	1922	1000		11300	High	56.4
Mill Pond	1922	1430	55	4000	High	125
Mill Pond Dike	1922	1430	8	4000	High	125
Sullivan Lake	1923	31000	25	4000	High	51
Box Canyon	1955	36	105	350000	High	24900
Box Canyon Forebay Dam	1955	36	32		Low	24900
Calispell Creek Dike and Pump Plant		36	28		High
Stemilt Main Dam	1962	580		20	High	0.25
Wood Reservoir Dam No 1	1991	40.9		4.7	High	0.02
Hansen Dam	1962	20		725	Low	12.1
Mcdonald Dam	1924	200		0	Low	27.4
Mckay Dam	1961	19		39	Low	0.78
Locke Dam	1973	1000		174	High	1.16
Meyers Falls	1961	32	21	5450	Low	1007
Long Lake	1915	105080	213	269200	High	5844
Long Lake Crescent	1915	105080	108		High	5844
Con Agra Foods Main Storage Basin Dam	1970	84		160	Low	0.41
Sims Dam	1960	187		210	Low	1.6
Jorgensen Dam	1946	30		41	Low	0.53
Jenkins Webley Dam	1945	586		254	Low	6.01
Coffin Sheep Dam No 3	1938	0		0	Low	42.05
Mountain Meadows Lake Dam	1959	1000		0	High	1.14
Scabrock Feeders Dam 3	1968	64		33	Low	0.36
Taggares Dam No 2	1968	95		33	Low	0.06
Taggares Dam No 1	1968	60		33	Low	0.06
Homestead Lake Dam	1971	30		20	Low	0.03
Lower Rimrock Dam	1972	550		22400	Low	256
Moran Slough Dike	1964	75	11		Low	0.5
Upper Falls Control Works	1922	800	23.9	38000	Low	4255
Upper Falls Intake Dam	1922	800	18	0	Low	4255
Fanchers Dam	1926	500		330	High	34.3
Ponderosa Lake Dam	1969	357		500	High	7.7
Mcdowell Lake Dam	1973	480		197	Low	1.88
Lyon Lake Dam	1971	50		0	Low	2.96
Duncan Dam No 2	1966	95		139	Low	0.5
Duncan Dam No 1	1966	96		0	Low	0.5
Cedar Lake Dam	1967	21	19	355	High	0.32
Miller Reservoir Dam	1959	62		82	Low	0.2
Dosser Reservoir Dam	1959	42		597	Low	5.8
Reflection Lake South Dam	1955	490		11	High	0.65
Bonaparte Lake Dam	1957	535		0	Low	6.98
Schallow Lake Dam	1954	46		142	Low	13
Moccasin Lake Dam	1969			35	High	0.53
Beehive Dam	1953	260		130	High	0.11
Hog Lake Dam	1957	280		4050	High	48
Byron Ponds Dam	1950	100		0	Low	1.3
Blair Reservoir Dam	1937	0		250	High	3.28
Serenity Lake Dam	1972	115		300	High	5.1
Sherry Lake Dam	1952	26		1000	Low	15.3
Beitey Lake Dam	1934	100		160	High	3.1
Sowers Reservoir Dam	1958	23		250	Low	8
Snook Lake Dam	1953	50		0	Low	0.1
Nine Mile	1908	4600	58	60000	High	4998
Little Falls Dam	1910	2220		72398	High	5844
Higginbotham Reservoir Dam	1947	145		227	Low	13.75
Billingsley Dam	1949	0		273	Low	9
Meadow Lake Dam	1920	360		300	High	5
Patterson Lake Dam	1924	2500		260	High	6.03
Upriver Dam	1937	3000	38	58000	High	4057
Upriver Dam Forebay	1987	3000	30		Significant	4057
Rearing Pond Dike	1964	48		0	Low	1
Yergens & Anselmo Dam No 1	1970	45		47	Low	0.09
Upper Wheeler Dam	1922	632.7		2500	High	2.3
Little Green Lake Dam	1959	50		0	High	1.9
Antilon Lake Dam	1913	1920		360	High	2.46
Rock Island	1932	113700	71	920000	High	89400
Wanapum	1965	590000	93	1400000	High	95000
Rocky Reach	1962	382000	118	1200000	High	87800
Mill Pond Dam Klickitat Co	1951	100		500	Low	124
Priest Rapids	1961	191000	90	1334992	High	95500
Timberlakes Dam	1968	828		404	High	2.15
Little Twin Lakes Dam	1966	77		21	Low	0.2
Fawn Lake Dam	1966	580		80	Low	0.74
Tempo Lake Dam	1960	400		39	Low	0.96
Kaufman Dam	1967	65		50	Low	0.31
Serene Lake	1971	36		18	Low	0.16
Frozen Lake Dam	1930	0	14		High
Enloe Dam	1920	2400		46000	High	3590
Wells	1968	331000	160	1180000	High	85300
Lacamas & Round Lakes Lower Dam	1936	6100		20	Low	64.7
Sea Horse Ranch Dike	1961	75		0	Low	0.3
Erickson Dam	1968	125		102	High	2.03
Tri Mountain Estates Dam	1953	137		125	High	0.22
Long Bell Mill Pond Dam	1943	55		0	Low	7.5
Powell Dam	1963	63		0	Low	3.16
Koa Dam No 1	1965	50		162	Low	0.86
Failor Lake Dam	1956	394		66	Low	4.89
Aberdeen Lake Dam	1928	700		1975	High	5
Leprechaun Lake Dam	1966	38		135	High	0.36
Anderson Lake Dam	1966	370		520	High	0.95
Sylvia Lake Dam Pierce Co	1963	60		160	Significant	0.95
Rolland Lake Dam	1967	130		0	Low	0.4
Christine Lake Dam	1967	104		180	Low	1
Lacamas & Round Lakes Upper Dam	1936	6100		1220	High	64.7
Durhack Dam No 5	1972	198		63	Low	0.5
Durhack Dam No 4	1968	125		0	Low	0.3
Durhack Dam No 3	1968	125		0	Low	0.28
Durhack Dam No 2	1968	125		58	Low	0.05
Durhack Dam No 1	1968	125		0	Low	0.16
Burton & Louthan Dam	1973	77		24	Low	0.2
Woods Reservoir Dam	1972	210		255	Low	0.2
Utter Dam	1971	73		57	Low	0.39
Moses Lake South	1962	50000	12		Low
Moses Lake North Dam	1930	50000		500	Low	3080
Limerick Lake Dam	1966	920		1710	High	11.3
Camp Kwoneesum Dam	1964	102		5935	High	3
Sylvia Lake Dam Grays Harbor Cnty	1918	320		1510	High	5.07
Surge Pond Dam	1971	20		41	Low	15
Swofford Pond		1500	20	0	Low
Chambers Creek Reservoir Dam	1970	89		1120	Low	108
Kristofferson Lake Dam	1961	100		0	Low	1.12
Steilacoom Lake Dam	1989	2640		1980	High	62
Nookachamps Hills Dam	1969	118		169	Significant	0.3
Silver Lake Dam	1971	7500		1783	Low	39.3
Deschutes Dam	1951	3700		0	Low	185
Cushman No 1	1926	453350	235		High	95
Cushman No. 1 Spillway	1990	453350	46	41000	High	95
Cushman No 2	1930	8000	175	41050	High	103
Swift No. 1	1958	755500	412	184300	High	477
Yale	1953	402000	323	170000	High	592
Yale Saddle Dam	1953	402000	40		High	592
Merwin	1931	422000	313	120000	High	726
Packwood Lake	1964	3500	14	7800	Low	20
Mossyrock	1968	1700000	366	280000	High	1042
Mayfield	1963	133718	200	313000	High	1392
Mayfield Forebay Dam	1963	133718	47		Low	1392
Skookumchuck	1970	35000	160	28000	High	62
Devils Hole Dam	1959	86.6	21.7	441	Low	1.5
Barnaby Slough No 2 Dam	1968	124		0	Low	4.33
Loers Dam	1958	37		54	Low	2.5
Whatcom Lake Dam	1937	25000		7000	High	55.9
Unruh Reservoir Dam	1959	18		325	Low	0.3
Goodrow Dam	1964	38		300	Low	0.02
Erickson Dam No 2	1964	47		0	Low	0.3
Zylstra Dam No 2	1963	280		117	Low	8.62
Martins Lake Dam	1962	223		0	Low	0.31
Ayer Reservoir Dam	1964	125		21	Low	0.5
Fowler Reservoir Dam	1960	42		60	Low	0.7
Heidenreich Dam	1972	92		74	Low	0.35
Gorge	1961	8485	300	145000	High	1193
Ross	1949	1435000	540	85000	High	978
Diablo	1929	50000	389	105300	High	1160
Casad Dam	1956	4260		520	High	2.71
Lower Baker	1927	146279	285	54000	High	297
Upper Baker	1959	274221	312	69000	High	215
West Pass Dike	1959	274221	115		High	215
Louise Lake Dam	1972	1070		50	High	0.32
Erickson Dam No 1	1964	47		46	Low	0.3
Tolt River - South Fork	1962	57500	200	13000	High	18.8
Butterworth Dam	1949	2050		25	Significant	1.3
Eden Creek Dam	1937	77		75	Low	0.3
Tuck Lake Dam	1966	170		70	High	0.55
Judy Reservoir Dam B	1946	4300		55	High	1.5
Skagit Lake Dam	1971	258		166	Low	1.15
Judy Reservoir Dam A	1946	4420		58	High	1.5
Lummi Island Estates Dam	1963	49		35	High	0.36
Lawson Lake Dam	1948	65		10.3	Low	0.16
Radar Lake Dam	1973	68		5	High	0.02
Loutsis Dam	1970	97		97	Low	0.78
Tahuyeh Lake Dam	1961	1100		1950	High	5.69
Lewis Dam	1973	300		0	Low	14
William Symington Dam	1965	670		2400	High	6.64
Weyerhaeuser Dam	1970	57		105	Low	0.97
Jean Lake Dam	1963	100		41	Low	1.33
Loreene Lake Dam	1963	70		40	Low	0.78
Welcome Lake Dam	1959	130		1700	High	2.19
Crystal Lake Dam	1931	150		300	High	3.31
Chaplain Lake North Dam	1940	16200		660	High	2.6
Chaplain Lake South Dam	1930	16200		660	High	2.6
Dagger Lake Dam	1912	400		0	Low	1.14
Kayak Lake Dam	1965	130		44	High	0.38
Marcel Lake Dam	1964	280		1300	High	2.1
Lake Kittyprince Dam	1967	62		0	High	0.45
Trout Lake Storage Dam	1929	1440		960	High	1.4
Honeymoon Lake Dam	1969	42		200	High	1.84
Three Rivers Mill Pond Dam	1946	42		0	Low	0.2
Rainbow Springs Dam	1969	43		77	High	0.56
Glenhaven Lakes Dam	1963	125		134	Low	1.85
Culmback	1983	153260	262	57132	High	68
Youngs Lake Cascades Dam	1950	33760		0	Significant	2.19
Seattle City Volunteer Park Reservoir	1901	55		95	High	0
Roosevelt Reservoir	1910	153		45	High	0.01
Bitter Lake Reservoir	1958	65		4	High	0.01
Lake Forest Park Reservoir	1962	184		10	High	0
Ringold Pond Dam	1962	60		0	Low	0.4
Berger Dam	1970	55		106	High	0.83
Duncan Creek Dam	1963	260		428	Low	6.2
Carlisle Lake Dam	1920	150		0	High	4.15
Leader Lake Dam	1910	5900		470	High	3.1
Square Lake Dam	1938	673.9		0	High	1.2
Klonaqua Lake Dam	1933	1171.7		0	High	0.77
Colchuck Lake Saddle Dam	1930	1240		0	Low	1.41
Colchuck Lake Dam	1930	1063.8		0	High	1.41
Eightmile Lake Outlet Dam	1933	1610		0	High	5.85
Clear Lake Dam	1888	40		50	High	0.03
Lily Lake Dam	1892	350		47	High	0.43
Three Lakes Reservoir Dam	1908	600		0	Low	0.3
Spring Hill Dam	1918	460		95	High	0.43
Margaret Lake Dam	1933	820		750	High	2.86
Regulating Basin West Dam	1962		32	45	High	1
Regulating Basin South Dam	1962		35	0	High	250
West Hills Stormwater Pond Dam	2006	1.4		0	High	0.5
Lords Lake North Dam	1957	1480		250	High	0.5
Melbourne Lake Dam	1957	136		0	Low	2.17
Ringold Springs Fish Pond	1961	44		0	Low	0.3
La Grande	1944	2700	192	88000	High	292
Youngs Lake Outlet Dam	1921	33760		30	High	2.19
Masonry Dam	1914	90660		74400	High	81.4
Morse Lake Overflow Dike	1904	75000		0	Low	81.4
Alder	1945	214500	285	80000	High	286
Swift No 2 Hydroelectric Project	1959	2400	106	8000	Low
Conconully	1909	13000	72	11580	High	5
Kachess	1912	239000	63	5516	High	64
Dry Falls	1949	1275000	63		High	263
Grand Coulee	1941	9562000	550	265000	High	74100
Bumping Lake	1910	33700	44	3400	High	69
Clear Creek	1914	3500	47	2400	High	60
Keechelus	1917	158000	71	11800	High	55
North	1950	1275000	145		High	263
Osullivan	1948	511700	200	30850	High	4000
Pinto	1948	64200	111	15800	High	186
Lower Monumental Lock and Dam	1969	377000	0	850000	High	108500
Soda Lake Dike	1952	10150	59		Low
Spectacle Lake Dike	1969	13450	25		Low	5
Tieton	1925	198000	196	45700	High	119000
Cle Elum	1932	437000	124	40000	High	206
Cle Elum Main Dike	1932	437000			High
Cle Elum Dike 1	1932	437000	13		Low
Cle Elum Dike 2	1932	437000	13		Low
Cle Elum Dike 3	1932	437000	13		Low
Roza Diversion	1939	100	32	50000	Low	1785
Easton Diversion	1929	4000	66	15000	High	185
Twin Lakes	1940	60000			High
Owhi	1915	3000			High
Mountain Lake Dam	1905	2870		200	High	2.27
Gardner Dam	1961	40		0	Low	0.2
Cascade Lake Dam	1915	1700		130	High	3.42
Cranberry Lake Dam	1910	178		29	High	0.59
Everett Reservoir No 3	1923	61		0	High	0
Everett Reservoir No 4	1952	74		0	High	0.01
Parker Reservoir Dam	1955	46		570	High	0.5
Centralia Coal Mine Dam No 5c	1970	52		90	Low	0.1
Centralia Coal Mine Dam No 3a	1970	60		98	Low	0.31
Centralia Coal Mine Dam No 6b	1970	62		69	Low	0.02
Salmon Lake	1920	15700	54	400	High	6
Centralia Coal Mine Dam No 5	1971	95		356	Low	0.07
Centralia Coal Mine Dam No 8a	1972	59		2897	Significant	2.35
Centralia Coal Mine Dam No 8	1972	15		1310	Significant	2.49
Snoqualmie Falls	1898	566	19	10000	Low	400
Tapps Lake Dike No 4	1911	56000		0	High	9.7
Howard A. Hanson Dam	1962	26000	0	129000	High	221
Chief Joseph Dam	1955	516000	0	1200000	High	75400
Mud Mountain Dam	1948	0	0	156000	High	400
Hiram M. Chittenden Locks and Dam	1916	458000	0	16000	High	607
Wynoochee	1972	69405	175	52500	High	41
Chapman Lake Dam	1940	7500		5000	Low	48.5
Wandermere Lake Dam	1930	45		0	Low	0.3
Coweeman Gravel Pit No. 2 Dam	1962	165		100	Low	0.08
Snoqualmie Mill Pond Dam	1917	330		45	Low	375
Rabel Dam	1940	100		100	High	7.1
Waterville Sewage Treatment Pond	1954	40		8	Low	0.03
Black Lake Dam	1938	200		225	Low	0.01
Alkali Lake	1950	2000		110	Low	79
Columbia Marsh Unit #1 Dam	1958	325	20	1018	Low	5.2
Lower Pine Lake Dam	1940	152	14	4197	Low	34.4
Rainbow Lake Dam	1955	50		0	Low	0.2
Hawkins Dam	1940	35		200	High	8.3
Wapato Lake Dam	1912	2000		40	High	15.3
Fish Lake Dam	1920	2815		0	Low	10.6
Sasse Reservoir Dam	1910	60		150	Low	3.82
Blue Lake Dam Okanogan Co	1923	4416		0	Low	10.2
Whitestone Lake Dam	1930	2144		825	Low	13.8
Chalfa Dam	1940	50		100	High	6.6
Beth Lake			15	0	Significant
Texas Pond	1970	0		424	Low	0.3
Little Goose Lock and Dam	1970	565200	0	850000	High	103900
Davis Lake Dam Okanogan Co	1974	500		0	Low	1.77
Ione Mill Pond	1914	500		0	Low	28.7
Conger Lake Dam	1926	50		0	Low	14.8
D1 Big Meadow Lake Dam	1975	144	15	0	Significant	3
Ravensdale Pit	1972	120		0	Low	1.43
Teal Duck Slough Dam	1960	10		0	Low	0.7
Malinowski Dam	1963	120		10300	High	11
Dragoon Lake Dam	1913	157		0	Low	17.2
Ice Harbor Lock and Dam	1962	406500	0	850000	High	103200
Mill Creek Storage Dam	1942	3300	0	17000	High	80
Mill Creek Storage Dam - Diversion Dam	1942	0	0	0	Significant	0
Lower Granite Lock and Dam	1975	485000	0	850000	High	103200
Lower Granite Lock and Dam - North Levee	1974	0	0	0	High	0
Lower Granite Lock and Dam - West Levee	1974				High
Lower Granite Lock and Dam - East Levee					High
Bennettsen Lake Dam	1971	253		37	Low	0.18
Marshall Lake Dam	1912	1292		133	High	4.82
Berge Reservoir Dam	1954	26		74	Low	0.5
Chambers Lake	1967	320	7	400	Low
Lords Lake East Dam	1956	1480		190	High	0.5
Leader Lake Saddle Dam	1910	1000		0	High	3.1
Spring Hill Saddle Dam	1918	280		0	High	0.43
Beehive Saddle Dam	1953	260		130	High	0.11
Reflection Lake North Dam	1955	490		13	High	0.65
Stemilt Saddle Dam	1962	100		20	High	0.25
Padden Lake Dam	1933	4300		465	High	2.8
Ruth Lake Dam	1977	75	18	0	Low	11
Dohman Creek Dam	1978	60		50	Low	0.35
Jones Dam	1977	42		610	Low	0.75
Bernsen Dam	1974	40	15	30	Low	0.5
Sams Dam	1976	112		118	Low	0.41
Coyote Lake Dam	1976	99	16	163	Low	4.9
Dad'S Lake Dam	1976	310		800	High	3.4
Merry Dam	1976	66		219	Low	29.9
Lenice Dam	1976	110		219	Low	20.7
San Refugio Ranch Dam	1977	107		35	Low	0.1
Hecla-Day Mine Aspen Tailings Dam	1940	365		166	Significant	0.36
Southwest Genesee Street Detention Dam	1974	19		240	High	3.43
Fire Mountain Boy Scout Camp Dam A	1971	250		60	High	0.39
Fire Mountain Boy Scout Camp Dam B	1971	250		50	High	0.39
Fire Mountain Boy Scout Camp Dam C	1971	250		0	High	0.39
Kettwig Wildlife Dam	1979	100		0	Low	1.84
Boeing Flood Control Dam	1967	0		1043	Significant	1.11
Snakebite Reservoir Dam	1976	50		7	Low	1.72
Anderson Dam	1987	112		485	Low	0.41
Rock Lake Dam	1985	60	10		Low	0.63
Newman Lake Flood Control Dam	1976	8700		285	High	28.6
K2h Farms Mcnary No 1 Reservoir	1980	87		250	Low	0.11
Bernsens 810 Reservoir Dam No 1	1979	100		0	Low	0.03
Bernsens 810 Reservoir Dam No 2	1979	100		0	Low	0.03
Bernsens 810 Reservoir Dam No 3	1979	100		0	Low	0.03
Whiteman Cove Dam	1950	140		440	Low	1.2
Simplot Feeders Waste Pond No1	1973	75		0	Significant	55
Carnation Waste Pond No 7	1979	71		20	Low	3
Solmar Lake Dam	1968	34		6	High	0.37
Clear Lake Saddle Dam	1888	45		7	High	0.03
804 Reservoir Dam	1979	90		50	Low	0.2
Lawrence Lake Dam	1918	4379		0	Low	3.35
Youngs Lake New Inlet Dam	1926	33760		0	High	2.19
Tapps Lake Dike No 1	1911	19000		0	High	9.69
Tapps Lake Dike No 2a	1911	18000		0	High	9.7
Tapps Lake Dike No 2b	1911	26000		0	High	9.7
Tapps Lake Dike No 3	1911	26000		0	High	9.7
Tapps Lake Dike No 5	1911	38000		0	High	9.7
Tapps Lake Dike No 6	1911	41000		0	High	9.7
Tapps Lake Dike No 8	1911	32000		0	High	9.7
Tapps Lake Dike No 9	1911	24000		0	High	9.7
Tapps Lake Dike No10	1911	30000		0	High	9.7
Tapps Lake Dike No 11	1911	36000		0	High	9.69
Tapps Lake Dike No 12	1911	23000		0	High	9.6
Tapps Lake Dike No 13	1911	8000		0	High	9.7
Tapps Lake Dike No 14	1911	400		0	Low	9.6
Tapps Lake Dike No 15	1911	400		0	Low	9.7
French Canyon	1985	670	74	23000	High	16
Centralia Coal Mine Dam No 3b	1980	230		99	Significant	0.5
Sheep Springs Dam	1906	120		0	Low	342
Martin Marietta Sludge Pond	1981	90		5	Low	0.02
Shoecraft Lake Outlet	1952	630		0	Low	6.02
Horse Spring Coulee Dam	1924	0		0	Low	2.5
Roche Harbor Lake Dam	2013	526		271.6	High	0.76
Johnson Creek Reservoir Dam	1982	100		600	High	1.8
Everett Clearwell Pond Dam	1985	17		250	Low	0.01
Everett Washwater Storage Pond Dam	1985	55		100	Low	0.01
Sundstrom Dam No 2	1984	86		175	Low	0.19
Goldendale Wastewater Pond 1a	1983	89		20	Low	0.22
Goldendale Wastewater Pond 1b	1983	87		20	Low	0.22
Goldendale Wastewater Pond 2	1983	89		20	Low	0.22
Waterville Effluent Storage Pond	1981	53		1	Low	0.01
Lindblad Brothers Dam	1940	0		700	Low	9.4
Othello Primary Treatment Pond 1a	1982	115		6	Low	0.03
Othello Primary Treatment Pond 1b	1982	115		16	Low	0.06
Snoqualmie Pass Pud Sewage Lagoon No 1	1982	22		6	Low	0.01
Educket Creek Dam	1983	80	35		Significant
Malar Dam	1955	24		500	Low	0.21
Bellevue Detention Pond 133	1983	61		36	Low	1.9
Bellevue Detention Pond 197	1983	41		3	Low	2.37
Bellevue Detention Pond 165	1983	42		31	Low	0.68
Boeing Creek M1 Detention Dam	1983	0		1200	High	1.08
Koreis Dam	1982	52		2	Low	0.03
Buck Mountain Reservoir Dam No 1	1985	121		365	High	0.57
Buck Mountain Reservoir Dam No 2	1985	121		365	High	0.57
Buck Mountain Reservoir Dam No 3	1985	121		365	High	0.57
Wind River Logging CO Pond	1930	130		0	Low	108
Spencer Lake	1983	3038	42	200	Low	2.4
Garvey Dam	1986	49		110	Low	1.95
Sunheaven Farms Reservoir	1986	66		60	Low	0.12
Asamera Cannon Mine Tailings Dam	1986	2500		3300	High	1.7
Koppert Pond	1984	66		4	High	0.02
Hill Lake Dam	1984	80		90	Low	0.3
Black Rock Orchards Dam	1985	392		5500	High	4
Longview Sewage Lagoon No 1	1986	87		8	Low	0.04
Longview Sewage Lagoon No 2	1986	36		8	Low	0.04
Longview Sewage Lagoon No 3	1987	30		8	Low	0.07
Longview Sewage Lagoon No 4	1987	30		8	Low	0.06
Campbell Lake Dam	1948	50		50	Low	3.2
Ferndale Aerated Sewage Lagoon No 3	1986	35		12	High	0.01
Loon Lake Waste Storage Lagoon	1986	63		0	High	0.02
Loon Lake Polishing Lagoon	1986	35		2	High	0.01
Trask Lake Dam	1969	40		95	High	1.01
Indian Creek Dam	1989	856		1500	High	856
Fargher Lake Dam	1986	45		34	Low	0.78
Nielsen Dam A	1950	45		16	Low	0.15
Centralia Coal Mine Dam No 3c North	1987	1000		150	Significant	0.34
Centralia Coal Mine Dam No 3c South	1987	6000		150	Significant	0.34
Centralia Coal Mine Dam No 3c East	1987	2000		150	Significant	0.34
Martin Dam	1972	30		88	Low	1
Brown Dam Lincoln Co	1965	64		160	Low	8
Centralia Coal Mine Dam No 20c	1981	50		218	Low	0.1
Kessler Dam	1967	30		20	Low	0.18
Snohomish Sewage Lagoon	1958	120		615	Low	0.14
Ely Pump Storage Dam	1965	25		0	Low	0.01
Blazing Tree Ranch Pond 5 South Dam	1965	75		100	Low	0.56
Blazing Tree Ranch Pond 5 North Dam	1965	75		0	Low	0.56
Swano Lake Dam	1949	60		308	High	0.53
Fairview Reservoir No 1	1915	28		5	High	0.01
Firnstahl Dam	1965	50		35	Low	0.4
Squires Lake Dam	1960	44		45	Low	0.41
Spoils Pond Dam	1970	260		2	Low	0.3
Barrier Dam	1968	455	12	68350	Low	1402
Zosel Dam	1986	272400		18225	High	3150
Mount St. Helens Sediment Retention Structure	1988	0	186	228000	High	143
Yellow Lake Outlet Dike	1986	1		85	High	4.9
Davenport Sewage Lagoon No 4	1987	93		50	High	0.02
Dhondt Dam	1983	80		107	Low	0.14
Diamond Lake Aeration Lagoon No 3	1987	0		20	High	0.03
Diamond Lake Aeration Lagoon No 2	1987	0		20	High	0.03
Maytown Ski Pond Dam	1987	81		20	Low	0.34
Centralia Coal Mine Dam No 36	1989	57		120	Low	0.1
Centralia Coal Mine Dam No 36a	1989	56		120	Low	0.1
Garrison Creek Stormwater Detention Dam	1991	2		307	High	0.86
60th Street Stormwater Detention Dam	1988	10		470	Significant	1.81
Thorald Dam	1988	85		15	Low	0.16
Centralia Coal Mine Dam No 3d	1988	7500		0	Low	0.5
Cowlitz Falls	1994	11000	120	360000	Significant	1000
Upper Mill Creek Stormwater Detention Da	1990	133		820	High	1.24
Roza Wasteway 6 Reregulation Reservoir	1988	65		75	Low	0.11
Centralia Coal Mine Dam No 44	1975	180		115	Low	1.58
South Fork Mccorkle Creek Detention Dam	1989	159		2100	High	1.67
Little Sweden Dam	1986	90		10	Low	0.2
Centralia Coal Mine Dam No 19	1977	105		38	Low	0.34
Centralia Coal Mine Dam No 19a	1977	105		54	Low	0.34
Isaak Dam No 4	1987	31.3			High	150
Kinross Gold Kettle River Tailings Dam	1994	5288		900	High	0.36
Warman Waterski Lake Dam	1988	54		20	Low	0.05
Cranberry Lake Stormwater Detention Dam	1990	3100		655	High	6.5
Oak Harbor Wastewater Lagoon Nw Cell	1990	50		1	Low	0.01
Oak Harbor Wastewater Lagoon Sw Cell	1990	50		1	Low	0.01
Ponderay Newsprint Mill Settling Lagoon	1989	82		1	Low	0.01
Klahanie Stormwater Detention Dam No 13	1989	35		30	High	0.16
Carnation Potato Waste Lagoon System	1990	750		1	Low	0.07
Seeley Ski Lake	1992	40		32	Low	3
Centralia Coal Mine Dam No 32b	1991	124		611	Low	1.85
Van Stone Tailings Dam	1970	20		0	Significant	0.04
Tree Top Prosser Lagoons 2 & 3	1991	130		0	Significant	2
Hannegan Road Detention Basin	1996	49.3		1370	High	2.07
Leach Creek Stormwater Detention Dam	1960	1		280	High	3.67
High Woodlands Stormwater Detention Dam	1991	0		50	Low	1
Grandview Wastewater Lagoon Dam	1991	60		0	Significant	0.02
Sunnyside Indust Wastewater Lag 1 2 & 3	1992	465		60	Low	0.38
Hilltop Waterski Pond	1995	100		16	High	0.04
Zintel Canyon Dam	1992	1		38900	High	19
Miller Creek Regional Detention Facility	1992	73.3		834	Significant	3.21
Carl Malone Wildlife Pond	1992	30		300	Low	13
Pasco Industrial Wastewater System	1995	132		12	Significant	0
Upper Wheeler Saddle Dam	1992	370		2094	High	2.24
Hecla-Day Mine Aspen Tailings Saddle Dam	1987	365		166	Significant	0.36
Tyson Fresh Meats Storage Pond 4	1993	755		107	High	0.05
Sprague Wastewater Treatment Lagoons	1993	107		1	High	10
Weyerhaeuser Enumclaw Flood Control Dam	1993	0		1800	High	8.1
Scabrock Feeders Dam 6a	1970	156		1	Low	100
Scabrock Feeders Dam 6c	1970	114		1	Low	100
Pend Oreille Mine Nw Tailings Dam	2002	2700		0	Significant	0.42
Pend Oreille Mine Ne Tailings Dam	2001	2700		0	Significant	0.42
Upper Snow Dam	1939		10	370	Low	4.72
Pumping Pond	1960	234	22		Low
Nestle Potato Effluent Lagoon	1994	659		7	Low	0.05
Newcastle Railroad Embankment Dam	1900	15		1530	High	0.23
Garrison Creek 98th Avenue Detention D	1996	3.98		216	High	0.52
French Slough Agricultural Waste Storage	1997	82		0	Low	0.1
Little Falls Spillway Dam	1910	4250		70000	Low	5844
George City Wastewater Treatment Lagoon	1996	66	9	1.5	Low	0.02
Deer Park Wastewater Storage Lagoon No	1997	67		0	High	0.02
Snoqualmie Ridge Golf Course Pond M1	1997	44		112	Low	0.2
Mccain Foods Process Water Storage Facility	1996	1412	44	27	High	0.11
Coulee City Wastewater Lagoon	1997	111	5.5		High	0.1
Pasco Process Water Reuse Storage Lagoon	1997	352	18	18	High
College Hill Reservoir	1899	23		0	High	0.01
Nada Dam	1939		9	308	Low	1.59
Wsr Dairy Waste Lagoon	1998	61		0	Low	0
Upper Sunlight Lake Dam	1967	30		3	High	7.8
Loon Lake Sewer Dist No 4 Waste Lagoon	1998	73		5	Low	0.01
Longeway Dam	1970	60		100	Low	0.71
Rockford Wastewater Pond No. 3	1999	41		0	Significant	0.01
Seattle Port Lagoon No 3 Expansion	2001	221		140	High	0
Echo Falls Golf Course Reservoir No 2	2000	49		10	Low	0.01
Cziglenski Beaver Pond Dam	1995	320.5		0	Low	0
Smith Brothers Dairy Storage Lagoon	2001	91		11.6	Low	10.5
Issaquah Highlands Reid Pond Dam	2003	33		290	High	0.09
Centralia Coal Mine Pond 46 Dam	2004	7.9		300	Significant	0.1
Horseshoe Lake Dam	2003	280		2680	High	3.65
Icon Materials	1997	50		125	High	0.05
West Bank Project Reservoir	2003	0		215	High	0.01
3 Amigos Reservoir	2003	100		0	High	1.16
Centralia Coal Mine Pond 46a Dam	2004	48		621	Significant	0.71
Issaquah Highlands South Pond Dam	2003	21.8		110	High	0.23
Camano Island Cattle CO Dam	2004	100		525	High	0.48
Sunnyside Mp 59.29 Reservoir	2005	170		40	High	0.03
Minckler Dam B	1975	24		9	High	0.08
Des Moines Ck Reg Det Pond West Berm	2009	114		0	High	1.56
Des Moines Ck Reg Det Facility East Berm	2009	31		0	High	1.63
Con Agra Foods New Storage Basin	2006	130		15	Low	0.01
Simplot Lrar Lagoon	2006	61		0	Low	0
Tapps Lake Backflow Prevention Structure	2007	55500		1000	High	0
Ludvick Lake Dam	1950	60		17	Low	0.23
Whistle Lake Dam	1925	140			High	492
Issaquah Highlands Detention Pond	2008	44		0	High	0.28
Walla Walla Effluent Storage Lagoon	2008	78.2		0	Significant	0
Sunnyside Mp 23.7 Reservoir	2008	504		2000	High	0.04
Connell Wastewater Lagoon 4	2009	66		0	Significant	0.06
Connell Wastewater Lagoon 5	2009	141		0	Significant	0.02
Shillapoo Lake Dikes	2007	1115		150	Low	0
Evans Flavorland Reservoir No 1	1985	102		250	High	0.59
Evans Flavorland Reservoir No 2	1998	115		530	High	0.59
Evans Tieton Pond Dam	2004	27		70	High	0.43
Ochoa Ob-3 Process Water Storage Lagoon	2009	306		436	High	0
Farmland Ranch 19 Dam	1992	45.5		58	High	0.68
Spokane Hutterian Brethren Dam	2006	59		100	High	0.94
Mallard Marsh Dam	1960	168		22	Low	0
Rec Silicon Wastewater Pond	2009	177.2		25	High	0.02
Helsell Dam	1999	55		5	Low	0.1
Sunnyside Mp 37.1 Reservoir	2011	328		0	High	0.04
Port Townsend Paper Asb Pond	1978	550		0	Significant	0.05
Tukwila South Project South Pond	2011	100		119	Low	0.3
Belfair Wwtp Treated Water Storage Pond	2014	159.5		139	High	12.7
Potters Pond Dam	1959	42	11	153	Low	0.46
Dawn Mines Evaporation Pond 6	2013	90		0	High	30.4
North Aeration Stabilization Basin Lady Island	1977	767			Significant	0
N Marysville Regional Stormwater Pond No. 2	2015	14			High	0.27
Hecla Groundwater Management Impoundment	2015	129			Significant	0.01
Ice Harbor Ranch Block 211 Reservoir	2013	81			Low
Sacheen Lake Wwtp Lagoons	2016	38			High	0.02
Roza Ww5 Reregulation Reservoir	2017	1600		125	High	15.2
Upper Loop Reservoir	2015	99.6		17	High
Blackhorse East Dam	1960	85	12	46	Low	0.24
Long Lake East Dam	1960	1238	25	272	Low	4.31
Lower Turnbull Dam	1960	460	8	187	Low	4.27
Upper Turnbull Dam	1960	1118	12	149	Low	1.31
Columbia Marsh Unit #1 Pond No. 3 Dam	1958	35	13	72	Low	2.7
Upper Blackhorse Dam	1960	20	10	728	Low	6.56
Mayfield Plunge Pool Barrier	1963	49	14	313000	Low	1392
P.E.C. Headworks	1990		90		Significant	3600
Yelm Canal Dike	1930	350	35	750	High
Grandview Wastewater Lagoon F Dam	1997	112			Significant	0.63
Grandview Wastewater Lagoon 1 Dam	1999	55.24			Significant	0.01
Ob-3 Warden Digester Lagoon	2018	77.8			High	6.3
Lamb Weston Richland Lrad Lagoon	2017	89.1		6.3	Significant	0.01
Cow Palace Lagoon 2	2017	75			High
Quincy Brine Evaporation Ponds	1989	199.4			Significant
Two Rivers Sand and Gravel Extraction Pond	1994				Significant	0.19
Fish Barrier Dam	1959	84	19	35000	Low	215
Spirit Lake Outlet Tunnel	1985	13000	184	570	Undetermined
Coldwater Debris Dam	1981	64500	200		Undetermined
Castle Lake Debris Dam	1980	19000	190		Undetermined	1.3
Cadman Lewisville S&G Pit	2007	266		11	High	13.75
Stevenson Dam	1969	19		98	High	1.07
H & H Reservoir Dam No 1	1926	50		100	High	0.08
Shiflett Reservoir No. 1	1945	15		0	High	0.08
Shiflett Reservoir No. 2	1945	10		0	High	0.01
Steffen Brothers Reservoir Dam	1947	20		0	High	0.03
Crisman Reservoir Dam	1952	0	16	23	Significant	0.03
Haight Reservoir Dam	1951	12		21	High	0.02
Binford Reservoir Dam	1953	25		0	Low	0
Elmer Dam	1958	0		36	High	0.05
Kyte Dam	1966	17		154	High	0.32
Elwick Dam	1962	22.2		1869	High	3.3
Dawn Lake Dam	1950	42		17	High	0.43
Bullard Dam	1969	19		390	High	0.95
Smrekar Reservoir Dam	1954	23		260	Low	1.35
Sundstrom Dam No 1	1970	40		13	Low	0.25
Sportsman Lake Dam	1960	272		0	Low	0
Summit Lake Dam	1955	1570		0	Low	0
Lang Dam No 1	1956	14.4		0	High	0.43
Sawyer Lake Outlet Structure	1952	1116		0	Low	0
Wenatchee Heights Reservoir No 2 Dam	1998	80		50	High	0.02
Holiday Lake Dam	1967	9		30	High	0
Bremerton Reservoir No 4	1917	34		0	High	0
Loon Lake Control Structure	1951	5590		0	Low	0
Peabody Heights Reservoir	1925	22		0	High	0.01
Marysville Sewage Lagoon	1959	144		0	Low	0.14
Everett Reservoir No 2	1913	31		0	Significant	0
Middle Pine Lake Dam	1938	75	11	276	Low	33.7
Cow Lake Dam	1935	500		95	Low	315
Kohne Dam No 2	1950	0		720	Low	0
Stout Reservoir Dam	1958	72		400	High	2.54
Uddenberg Dam	1968	80		0	Low	0
Baker Lake Dam	1966	20		0	Low	0
Beryl Baker Dam	1977	22		80	High	2.5
Rio Mount Dam	1979	25		80	Low	1.14
Sisco Heights Dam	1984	21		66	High	0.39
Koura Dam	1949	9		0	High	0.08
Peterson Stormwater Detention Dam	1988	60		140	High	1.25
Happy Valley Stormwater Detention Basin	1981	0		1500	High	1.16
Prosser Diversion	1916	350	9		Low
Boyd Lower Reservoir Dam	1960	9.4		0	High	0
Bellevue Detention Pond 179 North	1977	14		480	Low	0
Cedar Way Stormwater Detention Dam	1985	25		860	High	1.63
Mill Creek Canyon Stormwater Detention D	1982	16.8		760	High	1.98
Deer Park Sewage Treatment Lagoon	1984	24.7		5	High	0.04
Deer Park Waste Water Storage Lagoon	1985	176		100	High	0.02
Stemilt Equalizing Reservoir	1985	35		19	High	0.04
Selah Aerated Lagoon	1985	18		0	High	0.01
Klahanie Stormwater Detention Dam No 1	1984	8		50	Significant	0.74
Badger Mountain Irr Dist Reservoir Expan	1977	10		0	High	10
Loon Lake Aeration Lagoon	1986	15		18	High	0.01
Haller Dam	1945	12		4	Low	0.01
Islewood Dam	1971	24		0	High	0.13
Williams Dam	1982	30		0	Low	0
Nielsen Dam B	1973	10		27	High	0.08
Nielsen Dam C	1973	12		4	High	0.15
Fairfield Sewage Equalization Basin - Lagoon 2	1966	13		0	Significant	0.01
May Lake Dam	1950	11		10	High	0.7
St Clair Stormwater Detention Dam	1986	21		1335	High	0.64
Jays Pond Dam	1973	13		8	High	0.03
Quincy Aerated Lagoon No 1	1987	6		0	Significant	0.01
Quincy Aerated Lagoon No 2	1987	6		0	Significant	0.01
Davenport Sewage Lagoon No 2	1987	37		0	High	0.01
Davenport Sewage Lagoon No 3	1987	33		0	High	0.01
Diamond Lake Sewage Lagoon No 1	1988	0		20	High	0.03
Queens Bog Dam	1987	34		80	Low	5.4
Blazing Tree Ranch Pond 6 Dam	1977	23		100	Low	0
Green Mountain Pond	1987	40		80	Low	0.02
Jefferts Dam	1988	32		100	Low	0.06
I405 Coal Creek Stormwater Detention Da	1987	1		1000	Low	0
Des Moines Creek Stormwater Detention Da	1989	16		100	High	1.25
Lakemont Stormwater Pond	1992	10		581	High	0.4
Roslyn Wastewater Lagoon No 3	1973	50		1	Low	10
Telegraph Road Stormwater Detention Dam	1988	0		800	High	0.66
Seaway Center Stormwater Detention Dam	1989	16		90	Significant	0.08
Springwood Stormwater Detention Dam	1992	35		211	High	0.69
Boeing Auburn Drainage Ditch Detention D	1994	30		119	Low	0.7
Pigeon Creek No 1 Stormwater Detention D	1990	18.2		322	Significant	0.31
Roy Farms Irrigation Pond	1989	7		0	High	0
Wood Reservoir Dam No 2	1989	26.7		100	High	0.02
Horton Road Detention Dam	1994	0		486	High	0.82
Vaagen Mitigation Control Structure	1990	50		65	Low	0.22
Edaleen Dairy Waste Storage Pond No. 2	1989	18.5			High	0.01
Geneva Lake Dam	1988	9.6			High	0.08
Winlock Waterski Pond Dam	1990	50		0	Low	2
Wade Dann Waterski Pond Dam	1990	50		0	Low	0.03
Macs Pond Dam	1895	12		65	Low	0.15
Chinook Water District Dam	1991	27		150	Low	0.55
Tree Top Selah Wastewater Lagoon	1991	168		9	Low	0.02
Windsor Waterski Pond	1992	100		78	High	0.13
Lunds Gulch Creek Regional Stormwater Detention Pond	1992	11.9		383	High	1.36
Mill Pond Stormwater Detention Dam	1994	0		383	High	0.8
Havvaski Waterski Pond	1992	83		15	Low	0.02
Bagley	1927	0		40	High	1.1
Woodcrest Lakes Dam	1980	25		6	Low	0.32
Davenport Sewage Lagoon No 1	1993	39		3	High	0.01
Fairview Reservoir No 2	1921	46		8	High	0.01
Mill Creek Dam Cosmopolis	2019	10		0	High	1.68
Bremerton National Airport Detention Dam	1995	0		277	Low	0.67
Panther Lake Detention Dam	1994	0		650	High	2.05
West Richland Sewage Lagoon North	1961	35		0	Significant	2
Flying Goose Ranch Wetland Dam No 1	1995	60		140	Low	4.4
Panther Lake Ballfield Dam	1994	0		637	High	2.05
Quadrant Lake No 1	1994	57		480	Low	0.73
Slavic Lake Dam	1990	8		30	High	2
Snohomish Wastewater Treatment Lagoon Sy	1995	46		29	Low	0.01
Panther Lk First Avenue Bas Detent Pond	2000	1		52	High	0.1
Springdale Wastewater Pond System	1995	61.6	11	2	Low	9.4
South 336th Street Stormwater Dam No 1	1996	35	12	430	High	1.14
Flat Top Ranch Frost Control Pond	1996	43		22	High	0
Horn School Rest Area Sewage Lagoon	1996	19.2		10	High	0
South 336th Street Stormwater Dam No 2	1996	4.19		430	High	0.59
Kennewick Sewage Lagoon System	1997	246	24	50	High	0.03
Iman Lake Dam	1996	22		177	High	0.53
North Fork Clover Creek E1 Det Basin	2000	40		749	High	1.87
Olympic View Landfill Leachate Lagoon No	1997	9.6		3	High	0
Great Depression Dam	1998	30		202	High	0.06
Boeing Creek Park North Pond Dam	1998	1		227	High	1.05
Waitt Lk Valley Sewage Treatment Lagoon	1998	78		0	Low	0
Pacific Nw Sugar CO Sedimentation Pond	1998	99		0	Low	0
Pacific Nw Sugar CO Condensation Pond	1998	100		0	Low	0
Trossachs Detention Pond Pc-3	1999	17.5		57	High	0.05
Milles Lake Dam	1950	20		172	High	1.32
Beacon Hill Reservoir	1935	10.7		0	High	0
West Fork Dam	1956	7.2		0	Significant	8.2
Silver Firs Detention Pond No 3	1999	1		324	High	0.63
Kennewick No 1 Aerated Wastewater Lagoon	1975	114		0	High	0.01
Kennewick No 2 Aerated Wastewater Lagoon	1975	132		0	High	0.02
Redmond Ridge Cedar Dam	1999	32.4		53	High	0.17
Snoqualmie Ridge Osprey Ct Pond D1	1999	1		44	High	7.4
Hovander Dairy Waste Storage Pond	1998	5.46		0	Significant	0.01
Port of Moses Lake Lagoon	1999	25		0	Low	0
Bueler Dairy Waste Storage Pond	2000	23		0	Significant	0
Ritzville Wastewater Lagoons	2000	302.5		3.6	Significant	0
Quadrant East Campus Parcel 1 Dam	2000	1	10		Significant	37.5
Aldarra Pond Dfr1	2001	1		0	Low	0
204th Street Stormwater Detention Basin	2001	12		450	Significant	0.56
South Ridge Stormwater Detention Dam	2002	22		63	High	0.1
Connell Wastewater Lagoons	2000	60		0	Significant	0
Metaline Falls Wastewater Lagoon No 3	1963	10		1	Significant	0.02
North Ranch Storage Lagoon	2018	20		0	Significant	0
Ingredion Process Water Lagoon	2000	43		3	Significant	0.01
North Bay Water Reclamation Pond 1	2000	44.8		51	Significant	0.01
North Fork Clover Creek W1 Det Facil	2001	85		1260	High	2.9
Trossachs Detention Pond Pc-2	2002	43		85	High	0.22
Csr Associated Avenue Retention Dam	2003	15		0	Low	0
Redmond Ridge Drive Ec 4n Roadway Dam	2003	0.7		62	High	0.48
Orchards Block 96 Reservoir Dam	2001	50		360	High	0.13
Talus P5 Stormwater Detention Dam	2002	1.1		0	High	0.05
Lakeland South Pond No 1	2003	17.6		70	High	0.01
Fairfield Sewage Aerated Lagoon - Lagoon 1	2003	9.5		0	Significant	0
West Lynden Regional Detention Facility	2003	26		46	Low	0.3
Issaquah Highlands Np2 Pond Dam	2002	19		9.1	High	0.06
Mountain Pond Dam	1992	22		50	High	0.01
Orchards Block 92 Dam	1992	45		24	Low	0.01
Madsen Creek West Basin Dam	2008	16.1		50	High	0.11
Coleman Dam	1982	25	22		High
Issaquah Highlands Npe Pond	2003	11		50	High	0.1
High Point Redevelopment Stormwater Dam	2006	3		182	High	0.2
Sunny Dene Dairy Waste Pond	2004	23		82.2	Significant	35
Valley View Dairy Waste Pond	2003				Significant
Gap Road Reservoir	2004	37		10	High	0.01
N Marysville Regional Stormwater Pond	2004	10		94	High	0.13
Colville Wastewater Lagoons	1967	175		0	Low	0.06
Reardan Sewage Lagoon	2006	16		0	High	0
Williams Lake Sewer Dist 2 Lagoons	2007	39		0	Low	0
Muth Stormwater Pond	2007	30		68	High	0.06
Minckler Dam A	1975	11		5	High	0.04
Spscc Stormwater Pond F	2005	10		20	High	0.02
Mccormick North Phase I East Pond	2009	8		123	High	0.12
Redmond Ridge East Pond Srn 2 No 1	2008	21.6		400	High	0.17
Section 34 Re Regulating Reservoir	2005	40		30	Low	0.01
Chehalis Regional Water Reclamation Pond	2005	8		0	Significant	0
Cedar Heights Dam	2007	12.6		74	High	0.16
Seatac Airport Se Pond	2007	11		0	Significant	0.29
Watts Bros Organic Dairy Lagoon 1	2007	33.4		0	Significant	0.01
Watts Bros Organic Dairy Lagoon 2	2007	25.5		0	Significant	0.01
Watts Bros Organic Dairy Lagoon 3	2007	28.3		0	Significant	0.01
Kinross Gold Kettle River Reclaim Pond	2008	13.2		0	Significant	0.02
Newcastle Vista Pond 3	2012	3.4		870	High	0.11
Connell Wastewater Lagoon 1a	2009	13.27		0	Significant	0
Edaleen Dairy Waste Storage Pond No 3	2007	30.8		0	High	0.01
Roche Pomona Dam	1995	30.3		0	High	0.15
Evans Far West Pond Dam	1997	21.7		750	High	0.81
Mccormick Woods Pond Rc-8	2017	3.6		0	High	0
Redmond Ridge East Srs 1 Pond No 1	2013	26		284	High	0.07
Tyson Fresh Meats Lagoons 1 2 3	1980	37		0	Significant	0.01
Bear Mountain Dam	2003	12	11.5		High	0.21
Columbia River Orchard Reservoir 2	2008	38		11	High	0.01
Evans Konnowac Dam	1990	21		50	High	0.05
Avalon Fruit Dam 1	1985	25		5	High	0
Avalon Fruit Dam 2	1985	16.5		5	High	0
Avalon Fruit Dam 3	1985	15		0	High	0
Avalon Fruit Dam 4	1985	16		0	High	0
Avalon Fruit Dam 5	1985	10		0	High	0
Lawrence Orchards Dam	1995	27		5.9	High	0
Cardinal Crest Reservoir Dam	1990	13.5		0	High	0
Gamache Dam	1987	23		15	High	2.8
Den Hoed Dam No 1	1999	19		58	High	17.9
Del Monte Foods INC	1968	18			High	0
Stanwood Wastewater Pond	1980	60		0	Low	0.05
Holmes Harbor Reclaimed Water Ponds	1994	38		0	High	0.01
Selah Home Ranch Reservoir	2009	27.2		684	High	0.24
Thode Dam	1987	14.3		4.12	High	0.05
Albion Sewage Treatment Lagoons	1972	30		0	Low	0.01
Selah Naches Ranch Reservoir	2004	22.7		780	High	0.08
Tesoro Water Storage Reservoir	1958	37		163	High	0.01
Shell Refinery Water Storage Reservoir	1958	25		0	Low	0.01
Koehn Ranch Reservoir	2009	16.7		0	High	0
Seatac Airport Pond G	2009	0		298	High	0.11
Chiawana Richland Ranch Dam	1998	31.4		17	High	0.08
Chiawana Frenchman Hills Dam	1995	29		0	High	0
Chiawana Gleed Ranch Dam	2003	13.2		10	High	0
Curtis Dam	1978	19.7		32	High	1.37
Engelsma Dairy Lagoon Dam	1994	15		0	Significant	0.01
D&A Dairy Consolidated Lagoon No. 1	2021				Significant
Dionysus Dam	1973	27.5		0	High	0.01
Bacchus Dam	1973	63		0	Low	0
Samish Wd Sewage Lagoon No. 1	1974	4.8		0	Significant	0
Samish Wd Sewage Lagoons	1974	9.2		0	Significant	0
Paterson Ranch Reservoir	2010	40.5		5	High	0
Evans Desert Aire Pond	1990	21		10	High	0.01
Johnson Pond Dam	2011	19.5		10	High	0.14
Van Wingerden Pond 1	1980				Low
Interfor Pacific Stormwater Pond	2001	27		440	High	0.14
Partridge Ranch Dam	2010	19		12	High	0
Bonney Lake Wsu Infiltration Pond	2018	30		0	High	0.2
SVID Mabton Canal 12.48 Reservoir	2010	15		0	High	0
Camping Dairy Lagoon Dam	1980	10.5		0	High	0
Lohrer Dam	1974	18.6		26	High	325
Bosma Dam No. 1	2000	16		0	Significant	0
H&S Bosma Consolidated Lagoon No 4	2000	12		0	Significant	0
Liberty Acres Lagoon 14	1990	10		0	Significant	0.02
Boman Reservoir Dam	1977	52			High	0.45
Cow Palace Lagoon 1	2000	29.6		7	Significant	0.01
Schweitzer Dam and Reservoir	1914	69.04			High	4.94
Tyson Fresh Meats Pasco Brine Pond 8	2010	27		1	Significant	0.01
Van Stone Pit Lake Dam	1999	439		86	High	0.06
Cusick Polishing Lagoon	1978	0		0	Significant	0.01
Seatac Airport Pond M	2011	1		435	High	0.25
Bellingham Airport Sw Detention Pond 3	2011				High
Ste Michelle Canoe Ridge Evaporation Pond	2012	17.5			Significant	0.13
Rosalia Sewage Lagoon	1989	28			High	0.01
Prosser Warehouse Treatment Lagoon	2012	13.8			Significant
Finley Ranch Reservoir	2013	34			High	0
Fresh Water Pond			30		Significant
Friesland Dairy Lagoons	2013				High	0
Headquarters Landfill Leachate Pond	1993	21.83		1.5	Significant	0.03
Port of Sunnyside Anaerobic Pretreatment System	2015	31			High	0
Eaglemont Storm Pond	2014	10.3		290	High	0.07
Burnt Ridge Surface Impoundment	1998	9.2			Significant	0.05
Baby Gap Ranch Reservoir	2015	12.7			High
Lincoln Rock S.P. Evaporative Lagoons	1981	13		14.9	Significant	3
Cedar Hills Landfill Csw Pond	2016	46		214	Significant	0.09
Conner Jarvis East Pond	2018	8.4			Significant	0.03
Quincy Sludge Storage Lagoon System Lagoons 1 2 and 3	1986				Significant	0.01
Tyson Fresh Meats Brine Pond 7	1995	20			Significant
Latitude 47 Commerce Center Stormwater Pond	2020	10.17			High
Columbia Marsh Unit #2 Dam	1957	117	15	2884	Low	6.9

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