Coens Pond Dam is an earth dam located in Richland County, Illinois, built in 1974. It carries a Low hazard potential classification.
Dam profile
NID height · 18 ft18 ft tall and 420 ft long. 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 Coens Pond Dam
The primary purpose of Coens Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Helen Coen (private). It impounds the Trib Fox River near Bennington.
The dam stands 18 feet tall and stretches 420 feet across, and has a maximum storage capacity of 55 acre-feet. Completed in 1974, the structure is well into its service life at over 50 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. The most recent inspection on record was 06/20/2025.
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Location
| State | Illinois |
| County | Richland |
| Nearest City | Bennington |
| River/Stream | Trib Fox River |
| Coordinates | 38.73312, -88.12288 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 420 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 55 acre-ft |
| Max Storage | 55 acre-ft |
| Normal Storage | 34 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Helen Coen |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/20/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL01021 |
| Federal ID | IL01021 |
| More Info | State Dam Safety Program |