Ferne Clyffe Lake Dam
Ferne Clyffe Lake Dam is an earth dam located in Johnson County, Illinois, built in 1960. It carries a Low hazard potential classification.
About Ferne Clyffe Lake Dam
The primary purpose of Ferne Clyffe Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Illinois Department Of Natural Resources (state). It impounds the Trib Buck Branch near Belknap.
The dam stands 33 feet tall and stretches 800 feet across, and has a maximum storage capacity of 256 acre-feet. Completed in 1960, 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 11/22/2023.
At 33 feet, this dam is taller than 78% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Illinois |
| County | Johnson |
| Nearest City | Belknap |
| River/Stream | Trib Buck Branch |
| Coordinates | 37.53361, -88.97729 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 800 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 256 acre-ft |
| Max Storage | 256 acre-ft |
| Normal Storage | 174 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | ILLINOIS DEPARTMENT OF NATURAL RESOURCES |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 11/22/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00027 |
| Federal ID | IL00027 |
| More Info | State Dam Safety Program |