Lake Carroll Sedimentation Pond 3 Dam is an earth dam located in Carroll County, Illinois, built in 1989. It carries a Low hazard potential classification.
Dam profile
NID height · 23 ft23 ft tall and 510 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 Lake Carroll Sedimentation Pond 3 Dam
The primary purpose of Lake Carroll Sedimentation Pond 3 Dam is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by Lake Carroll Property Owners Association (private). It impounds the Trib East Fork Plum River near Georgetown.
The dam stands 23 feet tall and stretches 510 feet across, and has a maximum storage capacity of 80 acre-feet. Completed in 1989, the structure is 37 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 04/06/2023.
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Location
| State | Illinois |
| County | Carroll |
| Nearest City | Georgetown |
| River/Stream | Trib East Fork Plum River |
| Coordinates | 42.18181, -89.86135 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 510 ft |
| Year Completed | 1989 (37 years old) |
Storage & Hydraulics
| NID Storage | 80 acre-ft |
| Max Storage | 80 acre-ft |
| Max Discharge | 830 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | Lake Carroll Property Owners Association |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 04/06/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL50234 |
| Federal ID | IL50234 |
| More Info | State Dam Safety Program |