Upper East Fk Laterals Ws Scs Site 5c Dam Reservoir Report

Last Updated: December 5, 2025

The Upper East Fk Laterals WS SCS Site 5c Dam, also known as Wallace Lake, is a vital structure located in Rockwall, Texas, designed by the USDA NRCS in 1955.


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Summary

This earth dam serves as a flood risk reduction measure along the Little Buffalo Creek, with a height of 29 feet and a length of 1421 feet. The dam has a storage capacity of 1076 acre-feet and plays a crucial role in fire protection, stock, small fish pond, and recreational activities in the area.

Managed by the local government and regulated by the Texas Commission on Environmental Quality (TCEQ), the Upper East Fk Laterals WS SCS Site 5c Dam is inspected every 5 years to ensure its structural integrity. The dam's spillway type is uncontrolled, with outlet gates consisting of a slide gate and uncontrolled flow. Despite its fair condition assessment in 2021, the dam poses a moderate risk level, indicating the need for ongoing risk management measures to maintain its functionality and safety for the surrounding community.

With its historical significance dating back to the 1950s, the Upper East Fk Laterals WS SCS Site 5c Dam continues to serve as a critical infrastructure for flood control and water resource management in the region. As climate change impacts water resources, this dam plays a crucial role in mitigating flood risks and ensuring the safety of residents in Heath, Texas. The collaboration between local government agencies, regulatory authorities, and the USDA NRCS highlights the importance of proactive maintenance and risk assessment to safeguard this essential water infrastructure for future generations.

Years Modified

1800 - Other

Year Completed

1955

Dam Length

1421

Dam Height

29

River Or Stream

LITTLE BUFFALO CREEK

Primary Dam Type

Earth

Hydraulic Height

29

Nid Storage

1076

Structural Height

29

Outlet Gates

Slide (sluice gate) - 1, Uncontrolled - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

29
       
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.