Heyen Lake Dam
Heyen Lake Dam is an earth dam located in Montgomery County, Illinois, built in 1966. It carries a Low hazard potential classification.
About Heyen Lake Dam
The primary purpose of Heyen Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Wayne Heyden (private). It impounds the Trib West Fork Shoal Creek near Panama.
The dam stands 32 feet tall and stretches 385 feet across, and has a maximum storage capacity of 134 acre-feet. Completed in 1966, 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 08/08/2025.
At 32 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Illinois |
| County | Montgomery |
| Nearest City | Panama |
| River/Stream | Trib West Fork Shoal Creek |
| Coordinates | 39.15581, -89.61166 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 385 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 134 acre-ft |
| Max Storage | 134 acre-ft |
| Normal Storage | 87 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | WAYNE HEYDEN |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 08/08/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00697 |
| Federal ID | IL00697 |
| More Info | State Dam Safety Program |