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 26–50 of 241
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Centralia Coal Mine Dam No 8a Lewis County | 18 | 1972 | High | Satisfactory |
| Centralia Coal Mine Pond 46a Dam Lewis County | 16 | 2004 | High | Satisfactory |
| Chalfa Dam Okanogan County | 15 | 1940 | High | Satisfactory |
| Chaplain Lake North Dam Snohomish County | 35 | 1940 | High | Satisfactory |
| Chaplain Lake South Dam Snohomish County | 75 | 1930 | High | Satisfactory |
| Chehalis Regional Water Reclamation Pond Lewis County | 17 | 2005 | Significant | Satisfactory |
| Clear Lake Dam Chelan County | 13 | 1888 | High | Satisfactory |
| Clear Lake Saddle Dam Chelan County | 8 | 1888 | High | Satisfactory |
| Columbia River Orchard Reservoir 2 Douglas County | 13 | 2008 | High | Satisfactory |
| Conner Jarvis East Pond King County | 11 | 2018 | Significant | Satisfactory |
| Coulee City Wastewater Lagoon Grant County | 7 | 1997 | High | Satisfactory |
| Coulee City Wastewater Lagoon Cell 4 Grant County | 15 | 2008 | Significant | Satisfactory |
| Cowlitz Falls Lewis County | 145 | 1994 | Significant | Satisfactory |
| Cow Palace Lagoon 2 Yakima County | 28 | 2017 | High | Satisfactory |
| Cranberry Lake Stormwater Detention Dam Mason County | 10 | 1990 | High | Satisfactory |
| Culmback Snohomish County | 262 | 1983 | High | Satisfactory |
| Cushman No. 1 Spillway Mason County | 55 | 1990 | High | Satisfactory |
| Cushman No 2 Mason County | 275 | 1930 | High | Satisfactory |
| Dad'S Lake Dam Stevens County | 32 | 1976 | High | Satisfactory |
| Dawn Lake Dam Clallam County | 21 | 1950 | High | Satisfactory |
| Deer Park Ww Storage Lagoon No 3 Spokane County | 24 | 1997 | High | Satisfactory |
| Deer Park Ww Storage Lagoons 1 & 2 Spokane County | 23 | 1985 | High | Satisfactory |
| Del Monte Foods INC Yakima County | 12 | 1968 | High | Satisfactory |
| Des Moines Ck Reg Det Facility East Berm King County | 18 | 2009 | High | Satisfactory |
| Des Moines Ck Reg Det Pond West Berm King County | 8 | 2009 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.