Bunker Hill Old Lake Dam is an earth dam located in Macoupin County, Illinois, built in 1936. It carries a Low hazard potential classification.
Dam profile
NID height · 22 ft22 ft tall and 390 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 Bunker Hill Old Lake Dam
The primary purpose of Bunker Hill Old Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by City of Bunker Hill (local government). It impounds the East Fork Wood River near Forest Homes.
The dam stands 22 feet tall and stretches 390 feet across, and has a maximum storage capacity of 157 acre-feet. Completed in 1936, the structure is well-established, with more than 75 years of service.
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 08/02/2024.
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Location
| State | Illinois |
| County | Macoupin |
| Nearest City | Forest Homes |
| River/Stream | East Fork Wood River |
| Coordinates | 39.04431, -89.98141 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 390 ft |
| Year Completed | 1936 (90 years old) |
Storage & Hydraulics
| NID Storage | 157 acre-ft |
| Max Storage | 157 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Bunker Hill |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/02/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00776 |
| Federal ID | IL00776 |
| More Info | State Dam Safety Program |