Johnstown
Colorado — Weld County — BIG THOMPSON RIVER-OS
Location
| State | Colorado |
| County | Weld |
| River | BIG THOMPSON RIVER-OS |
| Coordinates | 40.33750, -104.95918 |
Physical Characteristics
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 5,737 ft |
| NID Storage | 430 acre-ft |
| Max Storage | 430 acre-ft |
| Surface Area | 35 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Satisfactory |
| EAP Status | Yes |
| Last Inspection | May 19, 2022 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1925 |
| Primary Purpose | Water Supply |
| Dam Type | Earth |
| Owner Type | Local Government |
| Owner | TOWN OF JOHNSTOWN |
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.