Calhoun Lake Dam is an earth dam located in Knox County, Illinois, built in 1923. It carries a Significant hazard potential classification.
Dam profile
NID height · 24 ft24 ft tall and 630 ft long. 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 Calhoun Lake Dam
The primary purpose of Calhoun Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Galva Lake Association (private). It impounds the Trib Fitch Lake near West Jersey-offstream.
The dam stands 24 feet tall and stretches 630 feet across, and has a maximum storage capacity of 413 acre-feet. Completed in 1923, the structure is over a century 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 04/26/2019.
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Location
| State | Illinois |
| County | Knox |
| Nearest City | West Jersey-offstream |
| River/Stream | Trib Fitch Lake |
| Coordinates | 41.10457, -90.01623 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 630 ft |
| Year Completed | 1923 (103 years old) |
Storage & Hydraulics
| NID Storage | 413 acre-ft |
| Max Storage | 413 acre-ft |
| Normal Storage | 202 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Galva Lake Association |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 04/26/2019 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00416 |
| Federal ID | IL00416 |
| More Info | State Dam Safety Program |