Koa Dam No 1
Washington, Lewis County, Tr-Mill Creek
Location
| State | Washington |
| County | Lewis |
| River | Tr-Mill Creek |
| Coordinates | 46.54932, -122.58488 |
Physical Characteristics
| NID Height | 18 ft |
| Dam Height | - |
| Dam Length | 330 ft |
| NID Storage | 67 acre-ft |
| Max Storage | 67 acre-ft |
| Surface Area | 50 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | - |
| EAP Status | Not Required |
| Last Inspection | - |
| Inspection Frequency | - |
Dam Information
| Year Completed | 1965 |
| Primary Purpose | Recreation |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | Mhc Ltra Inc |
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.