Hecks Lake Dam
Hecks Lake Dam is an earth dam located in Marion County, Illinois, built in 1959. It carries a Significant hazard potential classification.
About Hecks Lake Dam
The primary purpose of Hecks Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by C. J. Heck (private). It impounds the South Creek-offstream near Central City.
The dam stands 18 feet tall and stretches 375 feet across, and has a maximum storage capacity of 234 acre-feet. Completed in 1959, 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 05/05/2021.
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Location
| State | Illinois |
| County | Marion |
| Nearest City | Central City |
| River/Stream | South Creek-offstream |
| Coordinates | 38.58897, -88.93152 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 375 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 234 acre-ft |
| Max Storage | 234 acre-ft |
| Normal Storage | 146 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | C. J. HECK |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 05/05/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00240 |
| Federal ID | IL00240 |
| More Info | State Dam Safety Program |