Lost Nation Country Club Lake Dam is an earth dam located in Ogle County, Illinois, built in 1975. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 570 ft long, taller than 68% 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 Lost Nation Country Club Lake Dam
The primary purpose of Lost Nation Country Club Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lost Nation-new Landings River Cons Dist (private). It impounds the Clear Creek near Grand Detour.
The dam stands 30 feet tall and stretches 570 feet across, and has a maximum storage capacity of 1,013 acre-feet. Completed in 1975, 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 05/01/2025.
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Location
| State | Illinois |
| County | Ogle |
| Nearest City | Grand Detour |
| River/Stream | Clear Creek |
| Coordinates | 41.91831, -89.36906 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 570 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 1,013 acre-ft |
| Max Storage | 1,013 acre-ft |
| Normal Storage | 501 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lost Nation-new Landings River Cons Dist |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/01/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00504 |
| Federal ID | IL00504 |
| More Info | State Dam Safety Program |