East Fork Above Lavon Ws Scs Site 1c Dam Reservoir Report

Last Updated: December 5, 2025

The East Fork Above Lavon WS SCS Site 1c Dam, located in Collin County, Texas, serves as a critical flood risk reduction structure along the TR-Wilson Creek.


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Summary

Built in 1964 by the USDA NRCS, this earth dam stands at a height of 45 feet and stretches for 2,316 feet, providing essential protection to the surrounding area. With a storage capacity of 1,235 acre-feet and a maximum discharge of 2,050 cubic feet per second, this dam plays a crucial role in managing water flow and minimizing flood damage in the region.

Managed by the local government and regulated by the Texas Commission on Environmental Quality (TCEQ), the East Fork Above Lavon WS SCS Site 1c Dam has been assessed to be in fair condition as of December 2017. Despite its moderate risk level, the dam has not been assigned a hazard potential rating and lacks detailed inundation maps or emergency action plans. With a designated inspection frequency of every 5 years, the dam's operational integrity is closely monitored to ensure its continued effectiveness in flood control and water resource management for the community.

As water resource and climate enthusiasts, the East Fork Above Lavon WS SCS Site 1c Dam serves as a fascinating example of engineering ingenuity and environmental stewardship. Through its design and operation, this dam showcases the importance of sustainable water management practices and the critical role of infrastructure in mitigating flood risks and protecting communities from potential water-related hazards.

Year Completed

1964

Dam Length

2316

Dam Height

45

River Or Stream

TR-WILSON CREEK

Primary Dam Type

Earth

Surface Area

26.5

Hydraulic Height

45

Drainage Area

2.39

Nid Storage

1235

Structural Height

45

Outlet Gates

Slide (sluice gate) - 1, Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

45
       
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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.