Lynn Lake Reservoir Report

Last Updated: December 21, 2025

Lynn Lake, located in Fishville, Louisiana, is a private-owned recreational dam on Big Creek.


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Summary

Built in 1960, this earth dam stands at a height of 12 feet and has a structural length of 2570 feet. With a storage capacity of 87 acre-feet, this dam primarily serves for recreational purposes and has a spillway width of 40 feet.

Although the dam is deemed to have a low hazard potential, its condition assessment is rated as poor. Regular inspections are conducted, with the last one in August 2020, indicating a need for potential maintenance or rehabilitation. Despite its moderate risk level, Lynn Lake continues to be a popular destination for water resource and climate enthusiasts to enjoy outdoor activities in the Grant County area of Louisiana.

Year Completed

1960

Dam Length

2570

Dam Height

12

River Or Stream

BIG CREEK

Primary Dam Type

Earth

Surface Area

20

Hydraulic Height

7

Drainage Area

1

Nid Storage

87

Structural Height

12

Hazard Potential

Low

Foundations

Soil

Nid Height

12
       
Seasonal Comparison

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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.