Wold Lake Dam is an earth dam located in McHenry County, Illinois, built in 1965. It carries a Low hazard potential classification.
Dam profile
NID height · 11 ft11 ft tall and 800 ft long. 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 Wold Lake Dam
The primary purpose of Wold Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by George Wold (private). It impounds the Boone Creek near Bull Valley.
The dam stands 11 feet tall and stretches 800 feet across, and has a maximum storage capacity of 400 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 10/18/2024.
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Location
| State | Illinois |
| County | McHenry |
| Nearest City | Bull Valley |
| River/Stream | Boone Creek |
| Coordinates | 42.32879, -88.37141 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 800 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 400 acre-ft |
| Max Storage | 400 acre-ft |
| Normal Storage | 219 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | George Wold |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/18/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL01124 |
| Federal ID | IL01124 |
| More Info | State Dam Safety Program |