Lake Windsor Dam is an earth dam located in Knox County, Illinois, built in 1965. It carries a Low hazard potential classification.
Dam profile
NID height · 45 ft45 ft tall and 650 ft long, taller than 90% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Lake Windsor Dam
The primary purpose of Lake Windsor Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by New Windsor Sportsmans Club (private). It impounds the Trib Sugar Creek near Elmore.
The dam stands 45 feet tall and stretches 650 feet across, and has a maximum storage capacity of 676 acre-feet. Completed in 1965, 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 03/28/2024.
At 45 feet, this dam is taller than 90% of dams nationwide.
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Location
| State | Illinois |
| County | Knox |
| Nearest City | Elmore |
| River/Stream | Trib Sugar Creek |
| Coordinates | 41.00907, -90.13497 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 650 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 676 acre-ft |
| Max Storage | 676 acre-ft |
| Normal Storage | 565 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | New Windsor Sportsmans Club |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 03/28/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00418 |
| Federal ID | IL00418 |
| More Info | State Dam Safety Program |