Clinton Power Station/dredge Disposal Pond Dam is an earth dam located in De Witt County, Illinois, built in 1990. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Clinton Power Station/dredge Disposal Pond Dam
The primary purpose of Clinton Power Station/dredge Disposal Pond Dam is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by Exelon Generation Company, LLC (public utility). It impounds the Trib Clinton Lake near Maroa.
The dam stands 15 feet tall, and has a maximum storage capacity of 1,400 acre-feet. Completed in 1990, the structure is 36 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. An emergency action plan is in place for this dam. The most recent inspection on record was 11/23/2025.
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Location
| State | Illinois |
| County | De Witt |
| Nearest City | Maroa |
| River/Stream | Trib Clinton Lake |
| Coordinates | 40.16315, -88.85339 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Year Completed | 1990 (36 years old) |
Storage & Hydraulics
| NID Storage | 1,400 acre-ft |
| Max Storage | 1,400 acre-ft |
| Normal Storage | 278 acre-ft |
| Max Discharge | 100 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | Exelon Generation Company, LLC |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 11/23/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL50173 |
| Federal ID | IL50173 |
| More Info | State Dam Safety Program |