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 101–125 of 191
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Loon Lake Control Structure Stevens County | 8 | 1951 | Low | Fair |
| Lower Turnbull Dam Spokane County | 8 | 1960 | Low | Fair |
| Lummi Island Estates Dam Whatcom County | 20 | 1963 | High | Fair |
| Lunds Gulch Creek Regional Stormwater Detention Pond Snohomish County | 24 | 1992 | High | Fair |
| Marcel Lake Dam King County | 31 | 1964 | High | Fair |
| Margaret Lake Dam King County | 41 | 1933 | High | Fair |
| Marshall Lake Dam Pend Oreille County | 10 | 1912 | High | Fair |
| May Lake Dam Stevens County | 12 | 1950 | High | Fair |
| Mccormick North Phase I East Pond Kitsap County | 32 | 2009 | High | Fair |
| Merwin Cowlitz County | 313 | 1931 | High | Fair |
| Metaline Falls Wastewater Lagoon No 3 Pend Oreille County | 11 | 1963 | Significant | Fair |
| Minckler Dam A Island County | 11 | 1975 | High | Fair |
| Minckler Dam B Island County | 25 | 1975 | High | Fair |
| Moccasin Lake Dam Okanogan County | 17 | 1969 | High | Fair |
| Mountain Lake Dam San Juan County | 17 | 1905 | High | Fair |
| Mountain Pond Dam Walla Walla County | 42 | 1992 | High | Fair |
| Newcastle Vista Pond 3 King County | 11 | 2012 | High | Fair |
| North Fork Clover Creek E1 Det Basin Pierce County | 10 | 2000 | High | Fair |
| North Fork Clover Creek W1 Det Facil Pierce County | 10 | 2001 | High | Fair |
| Ochoa Ob-3 Process Water Storage Lagoon Adams County | 32 | 2009 | High | Fair |
| Olympic Orchards Dam 2 Yakima County | 21 | 1985 | High | Fair |
| Olympic Orchards Dam 3 Yakima County | 17 | 1985 | High | Fair |
| Olympic Orchards Dam 4 Yakima County | 12 | 1985 | High | Fair |
| Panther Lake Ballfield Dam King County | 15 | 1994 | High | Fair |
| Panther Lake Detention Dam King County | 12 | 1994 | High | Fair |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.