Plantation Hills Dam Reservoir Report

Last Updated: December 6, 2025

Plantation Hills Dam, located in De Soto, Louisiana, is a private-owned structure designed by Enoch J.


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Summary

French, P.E., P.L.S. This earth dam, constructed in 2017, stands at a height of 30 feet and has a hydraulic height of 19 feet, serving as a crucial component along the TR-Cypress Bayou. With a storage capacity of 65 acre-feet, this dam plays a vital role in regulating water flow, particularly during periods of heavy rainfall or flooding.

The dam's primary purpose is categorized as "Other," with a fair condition assessment as of March 2019. It boasts a spillway type of "Uncontrolled" and has a moderate risk assessment rating of 3 out of 5. The dam covers a surface area of 4.5 acres and has a maximum discharge rate of 121 cubic feet per second, ensuring efficient water management within the region. Despite being privately owned, the Louisiana Department of Transportation and Development regulates and inspects the dam regularly to ensure its structural integrity and safety for the surrounding community.

Overall, Plantation Hills Dam stands as a crucial infrastructure for water resource management in the area, providing both flood control and water storage capabilities. With its strategic location along the TR-Cypress Bayou and its efficient design by Enoch J. French, this dam serves as a testament to effective engineering in mitigating the impacts of climate change on water resources in Louisiana.

Year Completed

2017

Dam Length

527

Dam Height

26

River Or Stream

TR-CYPRESS BAYOU

Primary Dam Type

Earth

Surface Area

4.5

Hydraulic Height

19

Drainage Area

0.19

Nid Storage

65

Structural Height

30

Outlet Gates

None

Hazard Potential

Undetermined

Foundations

Soil

Nid Height

30
       
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.