Negro Lake Dam Reservoir Report

Last Updated: December 21, 2025

Negro Lake Dam, located in Evangeline, Louisiana, was completed in 1940 and serves as a vital resource for fish and wildlife in the area.


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Summary

Managed by a private owner, the dam stands at a height of 15 feet and has a capacity of 5600 acre-feet for storage. With a primary purpose of creating a fish and wildlife pond, the dam also supports irrigation and recreational activities for the local community.

The dam, designed by AC Fontenot, is primarily an earth dam supported by buttress and stone cores on a soil foundation. Its spillway, a key feature of the structure, is uncontrolled with a width of 75 feet. Despite being classified as having a low hazard potential, the dam's condition is assessed as fair, with moderate risk management measures in place. Regular inspections ensure its safety, with the latest assessment conducted in January 2019.

The surrounding area, including TR-Bayou Cocodrie, benefits from the water resources provided by Negro Lake Dam. With its strategic location and importance for wildlife conservation, irrigation, and recreation, the dam remains a critical component of the water infrastructure in Louisiana, contributing to the overall environmental sustainability and quality of life for residents in the region.

Year Completed

1940

Dam Length

2050

Dam Height

15

River Or Stream

TR-BAYOU COCODRIE

Primary Dam Type

Earth

Hydraulic Height

6

Nid Storage

5600

Structural Height

15

Hazard Potential

Low

Foundations

Soil

Nid Height

15
       
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.