Giboney Lake Dam Reservoir Report
Last Updated: December 20, 2025
Giboney Lake Dam, also known as Giboney Reservoir, is a privately owned structure located in Henry County, Indiana.
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Summary
Completed in 1965, this earth dam stands at a height of 32 feet and has a hydraulic height of 30 feet. The dam's primary purpose is classified as "Other," with a normal storage capacity of 88 acre-feet and a maximum storage capacity of 171 acre-feet.
Situated on an unnamed tributary of Castle Run, this dam poses a high hazard potential with a poor condition assessment as of the last inspection in August 2020. The spillway type is uncontrolled, with a width of 19 feet. The structure has a drainage area of 0.62 square miles and a maximum discharge capacity of 2,643 cubic feet per second. Despite its moderate risk assessment rating, the dam's emergency action plan and risk management measures are currently not available.
As an important component of the local water resource management system, Giboney Lake Dam serves as a critical infrastructure for flood control and water storage purposes. However, its poor condition and high hazard potential highlight the need for regular inspections, maintenance, and emergency preparedness to ensure the safety and integrity of the dam and surrounding areas. Climate and water resource enthusiasts should keep a close eye on developments regarding this dam to ensure proper risk management and mitigation strategies are in place.
Year Completed |
1965 |
Dam Length |
350 |
Dam Height |
32 |
River Or Stream |
UNNAMED TRIBUTARY CASTLE RUN |
Primary Dam Type |
Earth |
Surface Area |
12 |
Hydraulic Height |
30 |
Drainage Area |
0.62 |
Nid Storage |
171 |
Structural Height |
32 |
Outlet Gates |
Valve |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
32 |
Seasonal Comparison
Weather Forecast
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.
Giboney Lake Dam