Mountain Lake Dam
Washington — San Juan County — Cascade Creek
Location
| State | Washington |
| County | San Juan |
| River | Cascade Creek |
| Coordinates | 48.64991, -122.81250 |
Physical Characteristics
| NID Height | 17 ft |
| Dam Height | — |
| Dam Length | 172 ft |
| NID Storage | 3,010 acre-ft |
| Max Storage | 3,010 acre-ft |
| Surface Area | 180 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Fair |
| EAP Status | Yes |
| Last Inspection | July 23, 2024 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1905 |
| Primary Purpose | Recreation |
| Dam Type | Rockfill |
| Owner Type | State |
| Owner | WA PARKS |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.