Hooper Lake Dam Reservoir Report
Last Updated: December 22, 2025
Hooper Lake Dam, located in Jersey County, Illinois, was completed in 1954 and serves as a recreational site for water enthusiasts.
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Summary
Standing at a height of 31 feet and stretching 360 feet in length, this earth dam with a buttress core type provides a storage capacity of 36 acre-feet. Despite its uncontrolled spillway and low hazard potential, the dam is regulated by the Illinois Department of Natural Resources and undergoes regular inspections to ensure public safety.
The dam's association with Hooper Lake and its proximity to the tributary Rice Hollow make it an essential feature in the local water resource management system. While its condition assessment is currently unavailable, the risk assessment categorizes it as moderate, emphasizing the importance of ongoing risk management measures. With a designated emergency action plan and a maintained readiness for potential incidents, Hooper Lake Dam stands as a crucial component in the region's water infrastructure, catering to both recreation and safety needs for the community and visitors alike.
Year Completed |
1954 |
Dam Length |
360 |
Dam Height |
31 |
River Or Stream |
TRIB RICE HOLLOW |
Primary Dam Type |
Earth |
Nid Storage |
36 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
31 |
Seasonal Comparison
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Nearby Streamflow Levels
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.
Hooper Lake Dam