Ridinger Lake Control Structure Reservoir Report

Last Updated: December 5, 2025

The Ridinger Lake Control Structure in Kosciusko, Indiana, is a state-owned concrete dam primarily designed for recreational purposes.


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Summary

This structure, with a height of 7 feet and a length of 250 feet, provides a storage capacity of 467 acre-feet and serves a drainage area of 34.6 square miles. Although it has a low hazard potential and has not been rated for its condition, the last inspection was conducted in January 1994. The structure does not fall under the jurisdiction of any state regulatory agency and does not require regular inspections or enforcement.

Located within the Detroit District of the US Army Corps of Engineers, the Ridinger Lake Control Structure does not have an associated spillway or outlet gates. Despite its age and lack of recent assessments, the dam continues to serve its recreational purpose effectively. The structure's design and function cater to the needs of water resource and climate enthusiasts who appreciate the importance of managing water resources for recreational activities and environmental sustainability. While additional inspections and risk assessments may be necessary in the future, the Ridinger Lake Control Structure stands as a testament to responsible water management in Indiana.

Dam Length

250

Dam Height

7

Primary Dam Type

Concrete

Drainage Area

34.6

Nid Storage

467

Hazard Potential

Low

Nid Height

7
       
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.