Coffeen Southwest Detention Pond Dam
Illinois — Montgomery County — TRIB MCDAVID BRANCH
Location
| State | Illinois |
| County | Montgomery |
| River | TRIB MCDAVID BRANCH |
| Coordinates | 39.06701, -89.40348 |
Physical Characteristics
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 350 ft |
| NID Storage | 87 acre-ft |
| Max Storage | 87 acre-ft |
| Surface Area | 5 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Not Available |
| EAP Status | No |
| Last Inspection | September 17, 2025 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 2010 |
| Primary Purpose | Flood Risk Reduction |
| Dam Type | Earth |
| Owner Type | Public Utility |
| Owner | DYNEGY MIDWEST GENERATION, 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.