Prince's South Lake Dam (Not Built) Reservoir Report

Last Updated: December 5, 2025

Prince's South Lake Dam, situated in Johnson, Indiana, was never actually built, despite its planned purpose for recreation.


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Summary

The dam's design was intended to be an earth dam with a height of 46 feet and a length of 485 feet, with a storage capacity of 778 acre-feet. The dam's location boasts a surface area of 32 acres and a drainage area of 0.73 square miles, making it an ideal spot for outdoor enthusiasts and nature lovers.

Despite its potential as a recreational hub, Prince's South Lake Dam remains in a state of limbo, with an undetermined hazard potential and a condition assessment that is labeled as "Not Rated." The last recorded condition assessment was conducted in January 2011, leaving the dam's safety and viability for public use in question. With no inspection frequency listed and no emergency action plan prepared, the future of Prince's South Lake Dam remains uncertain, highlighting the importance of proper oversight and maintenance for water resource infrastructure.

Although the dam may never see completion or active use, its existence as a planned structure serves as a reminder of the delicate balance between harnessing natural resources for human enjoyment and ensuring the safety and well-being of both the environment and the community. As water resource and climate enthusiasts, it is crucial to advocate for responsible stewardship of our natural landscapes to prevent potential hazards and protect the integrity of our water systems for future generations.

Dam Length

485

Dam Height

46

Surface Area

32

Drainage Area

0.73

Nid Storage

778

Structural Height

46

Hazard Potential

Undetermined

Nid Height

46
       
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.