Dynegy/havana Station/cell 1, Polishing P
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Illinois |
| County | Mason |
| Nearest City | HAVANA |
| River/Stream | TRIB ILLINOIS RIVER |
| Coordinates | 40.27886, -90.07561 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 9,200 ft |
| Year Completed | 1993 (33 years old) |
Storage & Hydraulics
| NID Storage | 606 acre-ft |
| Max Storage | 606 acre-ft |
| Normal Storage | 482 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | DYNEGY MIDWEST GENERATION, INC. |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 10/07/2025 |
| Emergency Action Plan | Yes |