Little Walnut Creek Conservancy District - Structure 5 Reservoir Report
Last Updated: December 16, 2025
Little Walnut Creek Conservancy District - Structure 5, also known as Madison Hills Lake Dam, is a critical flood risk reduction structure located in Putnam County, Indiana.
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Summary
Built in 1972, this earth dam stands at a height of 55 feet and spans a length of 1055 feet, with a storage capacity of 5223 acre-feet. The dam is situated on Jones Creek and serves the primary purpose of flood risk reduction, while also offering recreational opportunities for the local community.
Managed by the local government, the dam is regulated by the Indiana Department of Natural Resources and undergoes regular inspections to ensure its structural integrity. Despite being classified as having a high hazard potential, the dam is currently assessed to be in fair condition. With a spillway width of 250 feet and a maximum discharge capacity of 18546 cubic feet per second, the dam plays a crucial role in managing water flow and protecting downstream areas from flooding.
Overall, Little Walnut Creek Conservancy District - Structure 5 is a vital piece of infrastructure in the region, contributing to both flood control and recreational activities. With a moderate risk assessment rating and a history of effective risk management measures, this dam continues to serve its community while maintaining a focus on safety and environmental protection.
Year Completed |
1972 |
Dam Length |
1055 |
Dam Height |
55 |
River Or Stream |
JONES CREEK |
Primary Dam Type |
Earth |
Surface Area |
74 |
Hydraulic Height |
55 |
Drainage Area |
12.88 |
Nid Storage |
5223 |
Structural Height |
55 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
55 |
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.
Little Walnut Creek Conservancy District - Structure 5