Delaney Creek Dam No. 10 Reservoir Report

Last Updated: December 6, 2025

Delaney Creek Dam No.


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Summary

10, also known as Potter Lake, is a local government-owned structure in Washington County, Indiana. Built in 1982 by the USDA NRCS, this earth dam on Delaney Creek serves the primary purpose of flood risk reduction. With a height of 24 feet and a length of 870 feet, the dam has a storage capacity of 571 acre-feet and a normal storage of 51 acre-feet, covering a surface area of 11 acres. Despite its low hazard potential, the dam's condition assessment in 2016 revealed poor structural integrity, highlighting the need for maintenance and repairs.

Located in Millport, Indiana, Delaney Creek Dam No. 10 is regulated and inspected by the Indiana Department of Natural Resources. The dam's risk assessment is classified as high (2), emphasizing the importance of implementing risk management measures to ensure public safety and protect the surrounding area from potential flooding. Although the dam lacks a spillway, it has a maximum discharge capacity of 1030 cubic feet per second. With its rock and soil foundations, the dam faces challenges in maintaining its structural integrity over time, underscoring the need for regular inspections and upkeep to mitigate potential risks and ensure continued functionality in flood control efforts.

As water resource and climate enthusiasts, understanding the significance of Delaney Creek Dam No. 10 in flood risk reduction efforts is crucial in addressing the challenges posed by changing weather patterns and increasing water-related hazards. With its location on Delaney Creek and its role in protecting the local community from flooding, the dam serves as a vital infrastructure asset that requires ongoing attention and investment to maintain its effectiveness and safeguard the surrounding environment. By staying informed about the dam's condition, regulatory oversight, and risk management strategies, stakeholders can contribute to preserving the resilience of water resources in Washington County and beyond.

Year Completed

1982

Dam Length

870

Dam Height

24

River Or Stream

DELANEY CREEK

Primary Dam Type

Earth

Surface Area

11

Drainage Area

1.3

Nid Storage

571

Outlet Gates

None

Hazard Potential

Low

Foundations

Rock, Soil

Nid Height

24
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.