Jennifer Creek Reservoir Dam Reservoir Report
Last Updated: December 14, 2025
Jennifer Creek Reservoir Dam, located in Tioga, Illinois, is a critical piece of infrastructure designed by the Corps of Engineers in 1971 for flood risk reduction along Jennifer Creek.
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Summary
The dam stands at a height of 62 feet and spans 740 feet in length, providing a maximum storage capacity of 910 acre-feet. Despite its low hazard potential, the dam is state-regulated by the Illinois Department of Natural Resources (IDNR) and undergoes regular inspections to ensure its structural integrity and safety.
The primary purpose of the Jennifer Creek Reservoir Dam is flood risk reduction, but it also serves other purposes within the community. It features an uncontrolled spillway with a width of 250 feet, helping to manage water levels during periods of heavy rainfall. The dam's location in Hancock County, Illinois, under the jurisdiction of the Rock Island District, highlights its significance in protecting the surrounding area from potential flooding events. With a moderate risk assessment rating and a history of state oversight, the dam remains a key component of water resource management in the region.
While the condition assessment of the Jennifer Creek Reservoir Dam is not currently available, its operational status is closely monitored to ensure its continued effectiveness in flood risk reduction. The dam's association with Jennifer Creek and its role in mitigating potential hazards underscore the importance of maintaining and inspecting this vital infrastructure. As climate change impacts water resources and weather patterns, the Jennifer Creek Reservoir Dam stands as a crucial barrier against flooding and a testament to the ongoing efforts to manage water resources in Illinois.
Year Completed |
1971 |
Dam Length |
740 |
Dam Height |
62 |
River Or Stream |
JENNIFER CREEK |
Primary Dam Type |
Earth |
Nid Storage |
910 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
62 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Bear Creek Near Marcelline
|
5cfs |
Wyaconda River Above Canton
|
13cfs |
Fox River At Wayland
|
8cfs |
Des Moines River At St. Francisville
|
1620cfs |
South Fabius River Near Taylor
|
12cfs |
La Moine River At Colmar
|
18cfs |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Warsaw City Campground
|
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Canton City River Park
|
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Mississippi Riverfront RV Park
|
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Bear Creek - Mississippi River
|
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Hubinger Landing Park
|
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Victory Park
|
Jennifer Creek Reservoir Dam