Conservation Club 100 Lake Dam is an earth dam located in Marion County, Illinois, built in 1953. It carries a Significant hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 400 ft long, 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 Conservation Club 100 Lake Dam
The primary purpose of Conservation Club 100 Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Conservation Club 100 (private). It impounds the Trib North Fork near Patoka-offstream.
The dam stands 30 feet tall and stretches 400 feet across, and has a maximum storage capacity of 391 acre-feet. Completed in 1953, 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 | Patoka-offstream |
| River/Stream | Trib North Fork |
| Coordinates | 38.78228, -88.98966 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 400 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 391 acre-ft |
| Max Storage | 391 acre-ft |
| Normal Storage | 279 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Conservation Club 100 |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 05/05/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00463 |
| Federal ID | IL00463 |
| More Info | State Dam Safety Program |