East Fork Above Lavon Ws Scs Site 29a Dam Reservoir Report

Last Updated: December 5, 2025

East Fork Above Lavon WS SCS Site 29a Dam, located in Collin County, Texas, is a vital infrastructure designed by USDA NRCS to mitigate flood risks in the region.


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Summary

Completed in 1965, this earth-type dam stands at a height of 29 feet and stretches over 1615 feet along the East Fork Trinity River. With a storage capacity of 258 acre-feet, it primarily serves flood risk reduction purposes while also supporting fire protection, stock, and recreational activities in the area.

Managed by local government authorities and regulated by the Texas Commission on Environmental Quality (TCEQ), East Fork Above Lavon WS SCS Site 29a Dam undergoes periodic inspections to ensure its structural integrity and safety standards. Although the dam lacks a spillway, its slide-type outlet gate allows for controlled water release when necessary. Despite being rated as a high-risk structure, its hazard potential and condition assessment remain unspecified, highlighting the need for continuous risk management measures and emergency preparedness protocols.

While the dam's risk level poses challenges, its strategic location and design play a crucial role in safeguarding the surrounding community from potential flooding events. As water resource and climate enthusiasts, it is essential to recognize the significance of such structures in maintaining the balance between water management, environmental conservation, and public safety within the region.

Year Completed

1965

Dam Length

1615

Dam Height

29

River Or Stream

TR-EAST FORK TRINITY RIVER

Primary Dam Type

Earth

Surface Area

8.5

Hydraulic Height

29

Drainage Area

0.5

Nid Storage

258

Structural Height

29

Outlet Gates

Slide (sluice gate) - 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.