Lake Carroll Sedimentation Pond 3 Dam Reservoir Report
Last Updated: December 14, 2025
Lake Carroll Sedimentation Pond 3 Dam, located in Georgetown, Illinois, was completed in 1989 and serves as a private debris control structure along the Tributary East Fork Plum River.
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Summary
This earth dam stands at a height of 23 feet and spans 510 feet in length, with a storage capacity of 80 acre-feet. While the dam's primary purpose is debris control, it also serves as a vital infrastructure for flood prevention and water resource management in the Carroll County area.
Managed by the Illinois Department of Natural Resources, this low hazard dam has a moderate risk assessment rating and is subject to regular state inspection, enforcement, and permitting. With uncontrolled spillways and outlet gates, the dam's design and construction were overseen by FEHR-GRAHAM & ASSOC. Despite its low hazard potential, the structure plays a crucial role in maintaining water quality and flow in the Plum River watershed, benefiting both local ecosystems and communities.
As a key component of the local water resource infrastructure, Lake Carroll Sedimentation Pond 3 Dam not only provides debris control but also contributes to flood prevention efforts and water quality maintenance. With its moderate risk assessment rating, this earth dam serves as a reminder of the importance of proper dam management and maintenance for the continued protection of natural resources and public safety in the Carroll County area.
Year Completed |
1989 |
Dam Length |
510 |
Dam Height |
23 |
River Or Stream |
TRIB EAST FORK PLUM RIVER |
Primary Dam Type |
Earth |
Nid Storage |
80 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pecatonica River At Freeport
|
723cfs |
Elkhorn Creek Near Penrose
|
44cfs |
Apple River Near Hanover
|
110cfs |
Pecatonica River At Martintown
|
473cfs |
Rock River At Como
|
3350cfs |
Rock River At Byron
|
4300cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Lake Carroll Sedimentation Pond 3 Dam