Boyles Lake Dam
Boyles Lake Dam is an earth dam located in Tazewell County, Illinois, built in 1972. It carries a Low hazard potential classification.
About Boyles Lake Dam
The primary purpose of Boyles Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Windermere Homeowners Assoc. (private). It impounds the Trib Mud Creek near Mapleton.
The dam stands 63 feet tall and stretches 780 feet across, and has a maximum storage capacity of 646 acre-feet. Completed in 1972, 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 07/02/2024.
At 63 feet, this dam is taller than 96% of all dams in the United States.
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Location
| State | Illinois |
| County | Tazewell |
| Nearest City | Mapleton |
| River/Stream | Trib Mud Creek |
| Coordinates | 40.52814, -89.42191 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 63 ft |
| Dam Height | 63 ft |
| Dam Length | 780 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 646 acre-ft |
| Max Storage | 646 acre-ft |
| Normal Storage | 441 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | LAKE WINDERMERE HOMEOWNERS ASSOC. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 07/02/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00339 |
| Federal ID | IL00339 |
| More Info | State Dam Safety Program |