Crown 1 Mine Pond Dam
Crown 1 Mine Pond Dam is an earth dam located in Montgomery County, Illinois, built in 1951. It carries a Significant hazard potential classification.
About Crown 1 Mine Pond Dam
The primary purpose of Crown 1 Mine Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is private-owned. It impounds the Trib Macoupin Creek near Farmersville.
The dam stands 11 feet tall and stretches 2,036 feet across, and has a maximum storage capacity of 97 acre-feet. Completed in 1951, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 08/08/2025.
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Location
| State | Illinois |
| County | Montgomery |
| Nearest City | Farmersville |
| River/Stream | Trib Macoupin Creek |
| Coordinates | 39.44162, -89.64219 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 2,036 ft |
| Year Completed | 1951 (75 years old) |
Storage & Hydraulics
| NID Storage | 97 acre-ft |
| Max Storage | 97 acre-ft |
| Normal Storage | 55 acre-ft |
| Spillway Type | None |
Ownership & Safety
| Purpose | Recreation |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 08/08/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00687 |
| Federal ID | IL00687 |
| More Info | State Dam Safety Program |