Lashbrook Pond Dam is an earth dam located in Clark County, Illinois, built in 1967. It carries a Low hazard potential classification.
Dam profile
NID height · 40 ft40 ft tall and 330 ft long, taller than 86% 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 Lashbrook Pond Dam
The primary purpose of Lashbrook Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Robert Lashbrook (private). It impounds the Trib Mill Creek near Hutsonville.
The dam stands 40 feet tall and stretches 330 feet across, and has a maximum storage capacity of 140 acre-feet. Completed in 1967, 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 06/11/2025.
At 40 feet, this dam is taller than 86% of dams nationwide.
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Location
| State | Illinois |
| County | Clark |
| Nearest City | Hutsonville |
| River/Stream | Trib Mill Creek |
| Coordinates | 39.38695, -87.77524 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 330 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 140 acre-ft |
| Max Storage | 140 acre-ft |
| Normal Storage | 103 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Robert Lashbrook |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/11/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00852 |
| Federal ID | IL00852 |
| More Info | State Dam Safety Program |