Hennepin Ash Pond 2 Dam
Illinois — Putnam County — ILLINOIS R
Location
| State | Illinois |
| County | Putnam |
| River | ILLINOIS R |
| Coordinates | 41.30471, -89.30751 |
Physical Characteristics
| NID Height | 52 ft |
| Dam Height | 52 ft |
| Dam Length | 3,200 ft |
| NID Storage | 60 acre-ft |
| Max Storage | 60 acre-ft |
| Surface Area | 5 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Not Available |
| EAP Status | No |
| Last Inspection | September 10, 2025 |
| Inspection Frequency | 3 |
Dam Information
| Year Completed | — |
| Primary Purpose | Other |
| Dam Type | Earth |
| Owner Type | Public Utility |
| Owner | DYNEGY MIDWEST GENERATION, LLC |
| Other Name | Retired Ash Pond 2 |
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.