Lake Dillman Dam (Upper) Reservoir Report
Last Updated: January 11, 2026
Lake Dillman Dam (Upper) in Banta, Indiana, is a privately owned earth dam completed in 1945 by the USDA NRCS.
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Summary
Situated on the White River, this recreational dam stands at a height of 32 feet and has a length of 340 feet, providing a surface area of 7.97 acres for water enthusiasts to enjoy. Despite its low hazard potential, the dam's condition assessment is rated as poor, with the last inspection conducted in 2018, highlighting the need for maintenance and repairs.
Managed by the Indiana Department of Natural Resources, Lake Dillman Dam (Upper) serves as a popular destination for outdoor activities such as boating, fishing, and picnicking. With a normal storage capacity of 92 acre-feet and a maximum discharge of 359 cubic feet per second, this dam plays a crucial role in water resource management and flood control in the region. However, the dam's risk assessment is classified as high, indicating the need for proactive risk management measures to ensure public safety and the dam's structural integrity.
Given its historical significance and recreational value, Lake Dillman Dam (Upper) remains a vital resource for the community while facing challenges related to its maintenance and safety. With proper oversight and investment in infrastructure improvements, this earth dam can continue to provide recreational opportunities and contribute to water resource conservation efforts in Morgan County, Indiana.
Year Completed |
1945 |
Dam Length |
340 |
Dam Height |
32 |
River Or Stream |
WHITE RIVER |
Primary Dam Type |
Earth |
Surface Area |
7.97 |
Hydraulic Height |
32 |
Drainage Area |
0.2 |
Nid Storage |
120 |
Structural Height |
32 |
Outlet Gates |
None |
Hazard Potential |
Low |
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.
Lake Dillman Dam (Upper)