East Fork Above Lavon Ws Scs Site 3c Dam Reservoir Report

Last Updated: December 5, 2025

East Fork Above Lavon WS SCS Site 3c Dam, located in Collin County, Texas, stands as a crucial structure for flood risk reduction along the TR-Wilson Creek.


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Summary

Built in 1958 by the USDA NRCS, this earth dam stands at a height of 44 feet and spans a length of 1678 feet, providing a storage capacity of 757 acre-feet. The dam serves multiple purposes including fire protection, recreation, and supporting small fish ponds, showcasing its versatility in water resource management.

Managed by the local government and regulated by the Texas Commission on Environmental Quality (TCEQ), the East Fork Dam has a satisfactory condition assessment as of April 2021. With a moderate risk rating, the dam's emergency action plan was last revised in November 2017, ensuring preparedness in case of any unforeseen events. The dam features an uncontrolled spillway and outlet gates for effective water management, while also meeting state inspection and enforcement requirements to maintain its operational efficiency and safety.

As a part of the flood risk reduction infrastructure in the region, the East Fork Above Lavon WS SCS Site 3c Dam plays a vital role in protecting the surrounding communities from potential hazards. With a well-maintained structure and a history of service spanning over six decades, this dam stands as a testament to effective water resource management practices and the importance of sustainable infrastructure for climate resilience in the face of changing environmental conditions.

Years Modified

2003 - Other

Year Completed

1958

Dam Length

1678

Dam Height

44

River Or Stream

TR-WILSON CREEK

Primary Dam Type

Earth

Surface Area

15.1

Hydraulic Height

44

Drainage Area

1.43

Nid Storage

757

Structural Height

44

Outlet Gates

Slide (sluice gate) - 1, Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

44
       
Seasonal Comparison

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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.