Coulterville Coal/gateway Mine/slurry Cell 4 Dam is an other dam located in Randolph County, Illinois, built in 2006. It carries a Low hazard potential classification.
Dam profile
NID height · 34 ft34 ft tall and 7,357 ft long, taller than 78% of U.S. dams with a recorded height. 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 Coulterville Coal/gateway Mine/slurry Cell 4 Dam
The primary purpose of Coulterville Coal/gateway Mine/slurry Cell 4 Dam is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by Coulterville Coal Company, LLC (private). It impounds the Plum Creek near Coulterville.
The dam stands 34 feet tall and stretches 7,357 feet across, creates a reservoir covering 64 acres, has a maximum storage capacity of 1,555 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 2006, the structure is relatively new.
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 09/04/2024.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Illinois |
| County | Randolph |
| Nearest City | Coulterville |
| River/Stream | Plum Creek |
| Coordinates | 38.17757, -89.64621 |
Physical Characteristics
| Dam Type | Other |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 7,357 ft |
| Year Completed | 2006 (20 years old) |
Storage & Hydraulics
| NID Storage | 1,555 acre-ft |
| Max Storage | 1,555 acre-ft |
| Normal Storage | 1,226 acre-ft |
| Surface Area | 64 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 314 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Tailings |
| Owner | Coulterville Coal Company, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 09/04/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL50554 |
| Federal ID | IL50554 |
| More Info | State Dam Safety Program |