Thunder Bay Lake Dam
Iowa — Polk County — TR-Four Mike Creek
Location
| State | Iowa |
| County | Polk |
| River | TR-Four Mike Creek |
| Coordinates | 41.65390, -93.51680 |
Physical Characteristics
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | — |
| NID Storage | 119 acre-ft |
| Max Storage | 119 acre-ft |
| Surface Area | 6 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Satisfactory |
| EAP Status | Not Required |
| Last Inspection | May 18, 2023 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 2010 |
| Primary Purpose | Flood Risk Reduction |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | Prairie Crossing Investments 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.