Marioneaux Pond Dam No. 1 Reservoir Report

Last Updated: December 6, 2025

Marioneaux Pond Dam No.


°F

°F

mph

Wind

%

Humidity

Summary

1, located in Shreveport, Louisiana, was constructed in 1958 by designer Harry Marioneaux for recreational purposes. This private earth dam stands at a height of 14 feet, with a hydraulic height of 12 feet and a structural height of 16 feet. With a length of 765 feet, the dam has a storage capacity of 161 acre-feet and serves the Wallace Bayou/Lake tributary.

The dam's spillway, classified as uncontrolled, features a width of 50 feet to manage a maximum discharge of 450 cubic feet per second. Despite its fair condition assessment as of November 2020, the dam poses a low hazard potential and is inspected every five years. While the risk assessment has determined a moderate risk level, the dam meets regulatory standards for state permitting, inspection, and enforcement by the Louisiana Department of Transportation and Development.

Water resource and climate enthusiasts may find Marioneaux Pond Dam No. 1 to be an interesting case study in dam infrastructure management, showcasing the balance between recreational use and regulatory compliance. With its location in De Soto County, Louisiana, this dam represents a vital piece of the state's water resource infrastructure, ensuring both safety and enjoyment for local residents and visitors alike.

Year Completed

1958

Dam Length

765

Dam Height

14

River Or Stream

TR- WALLACE BAYOU/LAKE

Primary Dam Type

Earth

Surface Area

23

Hydraulic Height

12

Drainage Area

2

Nid Storage

161

Structural Height

16

Hazard Potential

Low

Foundations

Soil

Nid Height

16
       
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.