Lake Waunetta Dam
Lake Waunetta Dam is an earth dam located in Edgar County, Illinois, built in 1954. It carries a Low hazard potential classification.
About Lake Waunetta Dam
The primary purpose of Lake Waunetta Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by William Minnis (private). It impounds the Trib Sugar Creek near Farrington-offstream.
The dam stands 24 feet tall and stretches 296 feet across, and has a maximum storage capacity of 93 acre-feet. Completed in 1954, 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 06/11/2025.
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Location
| State | Illinois |
| County | Edgar |
| Nearest City | Farrington-offstream |
| River/Stream | Trib Sugar Creek |
| Coordinates | 39.50965, -87.55129 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 296 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 93 acre-ft |
| Max Storage | 93 acre-ft |
| Normal Storage | 64 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | WILLIAM MINNIS |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 06/11/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL01197 |
| Federal ID | IL01197 |
| More Info | State Dam Safety Program |