Trison Farms Dam I Reservoir Report

Last Updated: December 6, 2025

Trison Farms Dam I, located in Washington, Louisiana, along the TR - HAYS CREEK, is a privately owned earth dam primarily used for recreational purposes.


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Summary

The dam stands at a height of 22 feet, with a hydraulic height of 19 feet and a structural height of 22 feet. It has a dam length of 629 feet and a storage capacity of 83 acre-feet, with a normal storage level of 71 acre-feet. The dam covers a surface area of 7.5 acres and has a drainage area of 0.07 square miles.

This low hazard potential dam with a fair condition assessment is regulated by the Louisiana Department of Transportation and Development (LADOTD). With a moderate risk rating, the dam has a spillway width of 24 feet and no outlet gates. The last inspection in December 2018 found the dam in fair condition, with an inspection frequency of every 5 years. Despite being privately owned, the dam meets state permitting, inspection, and enforcement requirements, ensuring its safety and compliance with regulations.

Overall, Trison Farms Dam I serves as an important recreational resource in the area and plays a key role in water management along TR - HAYS CREEK. With its moderate risk rating and fair condition, ongoing monitoring and maintenance are essential to ensure the dam's continued safety and functionality for both recreational use and water resource management in the region.

Dam Length

629

Dam Height

22

River Or Stream

TR - HAYS CREEK

Primary Dam Type

Earth

Surface Area

7.5

Hydraulic Height

19

Drainage Area

0.07

Nid Storage

83

Structural Height

22

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

22
       
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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.