Behnken Lake Dam
Behnken Lake Dam is an earth dam located in Randolph County, Illinois, built in 1975. It carries a Low hazard potential classification.
About Behnken Lake Dam
The primary purpose of Behnken Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by William Shedd (private). It impounds the Trib Marys River near Steeleville.
The dam stands 24 feet tall and stretches 700 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 85 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1975, 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 10/10/2023.
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Location
| State | Illinois |
| County | Randolph |
| Nearest City | Steeleville |
| River/Stream | Trib Marys River |
| Coordinates | 37.98443, -89.65125 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 700 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 85 acre-ft |
| Max Storage | 85 acre-ft |
| Normal Storage | 62 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | WILLIAM SHEDD |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 10/10/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL50529 |
| Federal ID | IL50529 |
| More Info | State Dam Safety Program |