Little Swan Lake Dam
Little Swan Lake Dam is an earth dam located in Warren County, Illinois, built in 1968. It carries a Low hazard potential classification.
About Little Swan Lake Dam
The primary purpose of Little Swan Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Little Swan Lake Club (private). It impounds the Little Swan Creek near Avon-offstream.
The dam stands 49 feet tall and stretches 958 feet across, and has a maximum storage capacity of 5,423 acre-feet. Completed in 1968, 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 08/04/2024.
At 49 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Illinois |
| County | Warren |
| Nearest City | Avon-offstream |
| River/Stream | Little Swan Creek |
| Coordinates | 40.67188, -90.52474 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 49 ft |
| Dam Height | 49 ft |
| Dam Length | 958 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 5,423 acre-ft |
| Max Storage | 5,423 acre-ft |
| Normal Storage | 3,172 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | LITTLE SWAN LAKE CLUB |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 08/04/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00469 |
| Federal ID | IL00469 |
| More Info | State Dam Safety Program |