East Fork Above Lavon Ws Scs Site 30 Dam Reservoir Report

Last Updated: December 5, 2025

The East Fork Above Lavon WS SCS Site 30 Dam, located in Collin County, Texas, is a crucial structure designed by the USDA NRCS to mitigate flood risk along the East Fork Trinity River.


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Summary

Completed in 1965, this earth dam stands at a height of 35 feet and spans a length of 1690 feet, providing a storage capacity of 458 acre-feet. With a primary purpose of flood risk reduction, this dam plays a vital role in safeguarding the surrounding areas from potential water-related disasters.

Managed by the local government and regulated by the Texas Commission on Environmental Quality (TCEQ), the East Fork Above Lavon WS SCS Site 30 Dam is inspected every 5 years to ensure its structural integrity. Despite being classified as having a "fair" condition assessment in 2017, the dam's hazard potential is not available, and the risk assessment is moderate. With uncontrolled spillways and two outlet gates, this dam serves as a critical infrastructure in the region's water resource management and climate resilience efforts.

As water resource and climate enthusiasts, understanding the significance of structures like the East Fork Above Lavon WS SCS Site 30 Dam is essential in appreciating the intricate balance between flood control, environmental protection, and community safety. With its historical relevance and ongoing maintenance, this dam stands as a testament to human ingenuity in managing water resources for the benefit of both people and the environment in the face of changing climatic conditions.

Year Completed

1965

Dam Length

1690

Dam Height

35

River Or Stream

TR-EAST FORK TRINITY RIVER

Primary Dam Type

Earth

Surface Area

18

Hydraulic Height

35

Drainage Area

0.92

Nid Storage

458

Structural Height

35

Outlet Gates

Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

35
       
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.