Girard Sunset Lake Dam is an earth dam located in Macoupin County, Illinois, built in 1955. It carries a Low hazard potential classification.
Dam profile
NID height · 47 ft47 ft tall and 1,015 ft long, taller than 91% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Girard Sunset Lake Dam
The primary purpose of Girard Sunset Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Sunset Lake Association (private). It impounds the Trib East Fork Otter Creek near Hettick-offstream.
The dam stands 47 feet tall and stretches 1,015 feet across, creates a reservoir covering 125 acres, has a maximum storage capacity of 2,749 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1955, 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 06/23/2021.
At 47 feet, this dam is taller than 91% of dams nationwide.
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Location
| State | Illinois |
| County | Macoupin |
| Nearest City | Hettick-offstream |
| River/Stream | Trib East Fork Otter Creek |
| Coordinates | 39.43604, -89.85537 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 47 ft |
| Dam Height | 47 ft |
| Dam Length | 1,015 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 2,749 acre-ft |
| Max Storage | 2,749 acre-ft |
| Normal Storage | 1,812 acre-ft |
| Surface Area | 125 acres |
| Drainage Area | 2 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Sunset Lake Association |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/23/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00771 |
| Federal ID | IL00771 |
| More Info | State Dam Safety Program |