Hennepin Station East Ash Pond
Low HazardNot Available ConditionEmergency Action Plan: No
Location
| State | Illinois |
| County | Putnam |
| Nearest City | HENNEPIN |
| River/Stream | TRIB ILLINOIS RIVER |
| Coordinates | 41.30357, -89.30083 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 3,600 ft |
| Year Completed | 1996 (30 years old) |
Storage & Hydraulics
| NID Storage | 300 acre-ft |
| Max Storage | 300 acre-ft |
| Normal Storage | 225 acre-ft |
| Surface Area | 16 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 219 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | DYNEGY MIDWEST GENERATION, LLC |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 09/10/2025 |
| Emergency Action Plan | No |