Crown 3 Mine Fine Refuse Pond Extension Dam is an earth dam located in Montgomery County, Illinois, built in 1995. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall, taller than 68% 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 Crown 3 Mine Fine Refuse Pond Extension Dam
Crown 3 Mine Fine Refuse Pond Extension Dam is a dam in Montgomery, Illinois. The dam is owned by J Oros Properties, LLC (private). It impounds the Trib Horse Creek.
The dam stands 30 feet tall, creates a reservoir covering 65 acres, has a maximum storage capacity of 2,257 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1995, the structure is 31 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 08/08/2025.
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Location
| State | Illinois |
| County | Montgomery |
| River/Stream | Trib Horse Creek |
| Coordinates | 39.43917, -89.69942 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Year Completed | 1995 (31 years old) |
Storage & Hydraulics
| NID Storage | 2,257 acre-ft |
| Max Storage | 2,257 acre-ft |
| Normal Storage | 1,904 acre-ft |
| Surface Area | 65 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 14 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | J Oros Properties, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/08/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL50373 |
| Federal ID | IL50373 |
| More Info | State Dam Safety Program |