Washington Dams
817 dams tracked by the National Inventory of Dams
Total Dams
817
High Hazard
404
49.4%
Poor / Unsatisfactory
65
Average Age
55 yrs
Hazard Classification
High404 (49.4%)
Significant98 (12.0%)
Low312 (38.2%)
Condition Assessment
Satisfactory241 (29.5%)
Fair191 (23.4%)
Poor / Unsatisfactory65 (8.0%)
Not Rated320 (39.2%)
Federal
69
State
42
Local
193
Private
392
Tallest Dams
- Grand Coulee Dam550 ft
- Ross540 ft
- Mud Mountain Dam425 ft
- Swift No. 1412 ft
- Diablo389 ft
High Hazard Dams
- Grand Coulee DamHigh
- RossHigh
- Mud Mountain DamHigh
- Swift No. 1High
- DiabloHigh
Poor Condition Dams
- Lower BakerPoor
- WellsPoor
- Van Stone Tailings DamPoor
- Indian Creek DamPoor
- Butterworth DamPoor
All Dams in Washington
Showing 176–200 of 241
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Fire Mountain Boy Scout Camp Dam B Skagit County | 9 | 1971 | High | Satisfactory |
| Finley Ranch Reservoir Benton County | 23 | 2013 | High | Satisfactory |
| Ferndale Aerated Sewage Lagoon No 3 Whatcom County | 17 | 1986 | High | Satisfactory |
| Farmland Ranch 19 Dam Yakima County | 35 | 1992 | High | Satisfactory |
| Everett Reservoir No 4 Snohomish County | 24 | 1952 | High | Satisfactory |
| Everett Reservoir No 3 Snohomish County | 22 | 1923 | High | Satisfactory |
| Evans Tieton Pond Dam Yakima County | 35 | 2004 | High | Satisfactory |
| Evans Flavorland Reservoir No 2 Yakima County | 40 | 1998 | High | Satisfactory |
| Evans Flavorland Reservoir No 1 Yakima County | 50 | 1985 | High | Satisfactory |
| Evans Desert Aire Pond Grant County | 9 | 1990 | High | Satisfactory |
| Elmer Dam Clark County | 16 | 1958 | High | Satisfactory |
| Diamond Lake Sewage Lagoon No 1 Pend Oreille County | 12 | 1988 | High | Satisfactory |
| Diamond Lake Aeration Lagoon No 3 Pend Oreille County | 17 | 1987 | High | Satisfactory |
| Diamond Lake Aeration Lagoon No 2 Pend Oreille County | 16 | 1987 | High | Satisfactory |
| Diablo Whatcom County | 389 | 1929 | High | Satisfactory |
| Des Moines Creek Stormwater Detention Da King County | 18 | 1989 | High | Satisfactory |
| Des Moines Ck Reg Det Pond West Berm King County | 8 | 2009 | High | Satisfactory |
| Des Moines Ck Reg Det Facility East Berm King County | 18 | 2009 | High | Satisfactory |
| Del Monte Foods INC Yakima County | 12 | 1968 | High | Satisfactory |
| Deer Park Ww Storage Lagoons 1 & 2 Spokane County | 23 | 1985 | High | Satisfactory |
| Deer Park Ww Storage Lagoon No 3 Spokane County | 24 | 1997 | High | Satisfactory |
| Dawn Lake Dam Clallam County | 21 | 1950 | High | Satisfactory |
| Dad'S Lake Dam Stevens County | 32 | 1976 | High | Satisfactory |
| Cushman No 2 Mason County | 275 | 1930 | High | Satisfactory |
| Cushman No. 1 Spillway Mason County | 55 | 1990 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.