Horn School Rest Area Sewage Lagoon
Washington — Whitman County — Offstream
Location
| State | Washington |
| County | Whitman |
| River | Offstream |
| Coordinates | 47.18364, -117.37695 |
Physical Characteristics
| NID Height | 19 ft |
| Dam Height | — |
| Dam Length | 1,200 ft |
| NID Storage | 22 acre-ft |
| Max Storage | 22 acre-ft |
| Surface Area | 3 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Satisfactory |
| EAP Status | Yes |
| Last Inspection | September 2, 2021 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1996 |
| Primary Purpose | Other |
| Dam Type | Earth |
| Owner Type | State |
| Owner | WA DOT |
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.