Black Hawk Lake Dam
Iowa — Sac County — Wall Lake Outlet
Location
| State | Iowa |
| County | Sac |
| River | Wall Lake Outlet |
| Coordinates | 42.29990, -95.00620 |
Physical Characteristics
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | — |
| NID Storage | 10,500 acre-ft |
| Max Storage | 10,500 acre-ft |
| Surface Area | 920 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Satisfactory |
| EAP Status | Not Required |
| Last Inspection | June 24, 2024 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1916 |
| Primary Purpose | Flood Risk Reduction |
| Dam Type | Earth |
| Owner Type | State |
| Owner | Iowa Department of Natural Resources |
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.