Lake Carroll Sedimentation Pond 2 Dam is an earth dam located in Carroll County, Illinois, built in 1988. It carries a Low hazard potential classification.
Dam profile
NID height · 14 ft14 ft tall and 700 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 2 Dam
The primary purpose of Lake Carroll Sedimentation Pond 2 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 East Fork Plum River near Boone Branch.
The dam stands 14 feet tall and stretches 700 feet across, has a maximum storage capacity of 134 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1988, the structure is 38 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 | Boone Branch |
| River/Stream | East Fork Plum River |
| Coordinates | 42.19259, -89.84933 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 700 ft |
| Year Completed | 1988 (38 years old) |
Storage & Hydraulics
| NID Storage | 134 acre-ft |
| Max Storage | 134 acre-ft |
| Drainage Area | 7 sq mi |
| Max Discharge | 3,430 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 | IL50233 |
| Federal ID | IL50233 |
| More Info | State Dam Safety Program |