Johnson Reservoir
Montana — Dawson County — DEER CREEK
Location
| State | Montana |
| County | Dawson |
| River | DEER CREEK |
| Coordinates | 47.31420, -105.09740 |
Physical Characteristics
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 1,500 ft |
| NID Storage | 351 acre-ft |
| Max Storage | 351 acre-ft |
| Surface Area | 36 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | — |
| EAP Status | Not Required |
| Last Inspection | July 17, 2024 |
| Inspection Frequency | — |
Dam Information
| Year Completed | 1937 |
| Primary Purpose | Recreation |
| Dam Type | Earth |
| Owner Type | State |
| Owner | STATE OF MONTANA, D.F.W.P. |
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.