Exxonmobil Coal Usa/mine 2/recirculation Lake Dam
Exxonmobil Coal Usa/mine 2/recirculation Lake Dam is a rockfill dam located in Clinton County, Illinois, built in 1975. It carries a Low hazard potential classification.
About Exxonmobil Coal Usa/mine 2/recirculation Lake Dam
The primary purpose of Exxonmobil Coal Usa/mine 2/recirculation Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Exxonmobil Environmental Services Compan (private). It impounds the Trib Grassy Branch near Damiansville.
The dam stands 18 feet tall and stretches 700 feet across, creates a reservoir covering 31 acres, has a maximum storage capacity of 394 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1975, 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 07/24/2025.
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Location
| State | Illinois |
| County | Clinton |
| Nearest City | Damiansville |
| River/Stream | Trib Grassy Branch |
| Coordinates | 38.53781, -89.60861 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 700 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 394 acre-ft |
| Max Storage | 394 acre-ft |
| Normal Storage | 180 acre-ft |
| Surface Area | 31 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 2,930 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | EXXONMOBIL ENVIRONMENTAL SERVICES COMPAN |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 07/24/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL50526 |
| Federal ID | IL50526 |
| More Info | State Dam Safety Program |