Hamilton County Coal/hamilton County/coal Refuse 1 Dam is an earth dam located in Hamilton County, Illinois. It carries a Low hazard potential classification.
Dam profile
NID height · 50 ft50 ft tall and 2,000 ft long, taller than 92% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Hamilton County Coal/hamilton County/coal Refuse 1 Dam
Hamilton County Coal/hamilton County/coal Refuse 1 Dam is a dam in Hamilton, Illinois. The dam is owned by Hamilton County Coal LLC (private). It impounds the Trib Big Creek.
The dam stands 50 feet tall and stretches 2,000 feet across, and has a maximum storage capacity of 630 acre-feet.
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 03/18/2025.
At 50 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Illinois |
| County | Hamilton |
| River/Stream | Trib Big Creek |
| Coordinates | 38.16959, -88.62755 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 50 ft |
| Dam Height | 50 ft |
| Dam Length | 2,000 ft |
Storage & Hydraulics
| NID Storage | 630 acre-ft |
| Max Storage | 630 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | Hamilton County Coal LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 03/18/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL50649 |
| Federal ID | IL50649 |
| More Info | State Dam Safety Program |