Greenbriar Lake Estates Dam Reservoir Report

Last Updated: December 5, 2025

Greenbriar Lake Estates Dam, located in Brown County, Indiana, is a privately owned earth dam constructed in 1950 for recreational purposes.


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Summary

The dam stands at a height of 21 feet and has a hydraulic height of 17 feet, with a length of 305 feet. It has a storage capacity of 92 acre-feet and covers a surface area of 10.9 acres. The dam is situated on an unnamed tributary of Clay Lick Creek and is regulated by the Indiana Department of Natural Resources.

Despite its low hazard potential, Greenbriar Lake Estates Dam is in poor condition and was last assessed in 2010. The dam lacks a spillway and outlet gates, posing a high risk of potential failure, especially in the event of heavy rainfall or flooding. The dam has not been modified in recent years, and its inspection frequency is set at 5 years. While the dam may serve as a recreational spot, its deteriorating condition highlights the urgent need for maintenance and repair to ensure the safety of the surrounding community and the environment.

Greenbriar Lake Estates Dam, owned by a private entity, is a vital part of the local landscape, providing storage for water resources and serving as a recreational area. However, the dam's poor condition and lack of essential features like a spillway raise concerns about its long-term safety and functionality. As water resource and climate enthusiasts, it is crucial to advocate for proper maintenance and inspection of dams like Greenbriar Lake Estates Dam to prevent potential disasters and protect the surrounding ecosystem.

Year Completed

1950

Dam Length

305

Dam Height

21

River Or Stream

UNNAMED TRIBUTARY CLAY LICK CREEK

Primary Dam Type

Earth

Surface Area

10.9

Hydraulic Height

17

Drainage Area

0.64

Nid Storage

92

Structural Height

17

Outlet Gates

None

Hazard Potential

Low

Nid Height

21
       
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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.