Kirby Dam Reservoir Report

Last Updated: December 5, 2025

Kirby Dam, also known as Wallace Dam, is a concrete structure located in Frierson, Louisiana, along Gandy Bayou.


°F

°F

mph

Wind

%

Humidity

Summary

Completed in 1946, this dam serves primarily for recreational purposes, offering a surface area of 18.2 acres and a maximum storage capacity of 400.2 acre-feet. With a height of 48 feet and a length of 4930 feet, Kirby Dam is regulated by the Louisiana Department of Transportation and Development, ensuring state permitting, inspection, and enforcement are in place.

Despite its low hazard potential, Kirby Dam has a moderate risk assessment rating of 3 due to its age and condition assessment not being rated. The dam features an uncontrolled spillway and slide gates for outlet control. While the last inspection was conducted in 2005 with an inspection frequency of every 5 years, the emergency action plan (EAP) status and risk management measures for the dam are currently unknown. Located in Caddo County, Louisiana, Kirby Dam offers a picturesque recreational spot for water resource and climate enthusiasts to enjoy in the region.

Year Completed

1946

Dam Length

4930

Dam Height

48

River Or Stream

GANDY BAYOU

Primary Dam Type

Concrete

Surface Area

18.2

Nid Storage

400.2

Outlet Gates

Slide (sluice gate)

Hazard Potential

Low

Foundations

Soil

Nid Height

48
       
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.