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

Last Updated: December 5, 2025

The East Fork Above Lavon WS SCS Site 3b Dam, located in Collin, Texas, is a crucial structure designed by the USDA NRCS to mitigate flood risks along the TR-Wilson Creek.


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Summary

Completed in 1958, this earth dam stands at a height of 55 feet and stretches over 1200 feet, providing essential flood risk reduction and irrigation capabilities for the region. With a normal storage capacity of 458 acre-feet and a maximum storage of 1400 acre-feet, the dam plays a significant role in managing water resources in the area.

Despite being primarily used for flood risk reduction, the East Fork Above Lavon WS SCS Site 3b Dam also serves irrigation purposes, highlighting its versatility in water management. The dam features an uncontrolled spillway with a width of 206 feet and is inspected every 5 years to ensure its structural integrity. With a satisfactory condition assessment as of October 2015, this dam continues to play a critical role in water resource and climate management in the region. The risk assessment for the dam indicates a moderate risk level, emphasizing the importance of ongoing monitoring and management measures to ensure its continued effectiveness in safeguarding the area from potential hazards.

Years Modified

1988 - Other, 2017 - Structural

Year Completed

1958

Dam Length

1200

Dam Height

55

River Or Stream

TR-WILSON CREEK

Primary Dam Type

Earth

Surface Area

31.8

Hydraulic Height

55

Drainage Area

2.68

Nid Storage

1400

Structural Height

55

Outlet Gates

Uncontrolled - 2, Valve - 1

Hazard Potential

Not Available

Foundations

Rock, Soil

Nid Height

55
       
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.