Hidden Lake Dam Reservoir Report

Last Updated: December 28, 2025

Hidden Lake Dam, also known as Blake Vidrine Dam, is a privately owned structure located in Dodson, Louisiana, within the Winn County.


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Summary

This earth dam on TR-Flat Creek stands at a height of 11 feet, with a hydraulic height of 9 feet and a length of 580 feet. The primary purpose of Hidden Lake Dam is for recreation, offering a serene setting for water resource and climate enthusiasts to enjoy.

Managed by the Louisiana Department of Transportation and Development, Hidden Lake Dam has a low hazard potential and is in fair condition as of the last inspection in September 2019. The dam has a maximum storage capacity of 175 acre-feet, with a normal storage level of 137 acre-feet and a surface area of 30.5 acres. The spillway, which is uncontrolled, has a width of 9 feet, ensuring safe water release during high flow events.

Although Hidden Lake Dam poses a moderate risk, with a risk assessment rating of 3, it meets regulatory guidelines and has appropriate risk management measures in place. With its beautiful surroundings and recreational opportunities, Hidden Lake Dam is a hidden gem for water enthusiasts looking to appreciate the intersection of natural beauty and human engineering in a serene Louisiana setting.

Dam Length

580

Dam Height

11

River Or Stream

TR-FLAT CREEK

Primary Dam Type

Earth

Surface Area

30.5

Hydraulic Height

9

Nid Storage

175

Structural Height

11

Hazard Potential

Low

Foundations

Soil

Nid Height

11
       
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.
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Area Campgrounds