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 51–75 of 404
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Chiawana Gleed Ranch Dam Yakima County | 21 | 2003 | High | Fair |
| Chiawana Rd O Sw Pond Grant County | 16 | 2019 | High | Not Rated |
| Chief Joseph Dam Douglas County | 230 | 1955 | High | Not Available |
| Clear Creek Dam Yakima County | 84 | 1914 | High | Not Available |
| Clear Lake Dam Chelan County | 13 | 1888 | High | Satisfactory |
| Clear Lake Saddle Dam Chelan County | 8 | 1888 | High | Satisfactory |
| Cle Elum Dam Kittitas County | 165 | 1933 | High | Not Available |
| Colchuck Lake Dam Chelan County | 18 | 1930 | High | Poor |
| College Hill Reservoir Grays Harbor County | 31 | 1899 | High | Poor |
| Columbia River Orchard Reservoir 2 Douglas County | 13 | 2008 | High | Satisfactory |
| Conconully Dam Okanogan County | 72 | 1911 | High | Not Available |
| Coulee City Wastewater Lagoon Grant County | 7 | 1997 | High | Satisfactory |
| Cow Palace Lagoon 2 Yakima County | 28 | 2017 | High | Satisfactory |
| Cranberry Lake Dam Skagit County | 13 | 1910 | High | Fair |
| Cranberry Lake Stormwater Detention Dam Mason County | 10 | 1990 | High | Satisfactory |
| Crystal Lake Dam Snohomish County | 7 | 1931 | High | Fair |
| 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 |
| Davenport Sewage Lagoon No 1 Lincoln County | 7 | 1993 | High | Fair |
| Davenport Sewage Lagoon No 2 Lincoln County | 4 | 1987 | High | Fair |
| Davenport Sewage Lagoon No 3 Lincoln County | 19 | 1987 | High | Fair |
| Davenport Sewage Lagoon No 4 Lincoln County | 22 | 1987 | High | Fair |
| Dawn Lake Dam Clallam County | 21 | 1950 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.