Little Elm And Laterals Ws Scs Site 10 Dam Reservoir Report

Last Updated: December 5, 2025

Little Elm and Laterals WS SCS Site 10 Dam, located in Grayson County, Texas, stands as a crucial infrastructure for flood risk reduction along the Walnut Fork Little Elm Creek.


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Summary

Built in 1966 by the USDA NRCS, this earth dam stands at a height of 24 feet and a length of 2098 feet, providing a storage capacity of 1343 acre-feet. Despite its relatively small surface area of 32 acres, the dam plays a vital role in protecting the surrounding area from potential flooding events.

Managed by local government authorities and regulated by the Texas Commission on Environmental Quality (TCEQ), the Little Elm and Laterals WS SCS Site 10 Dam is designed to serve multiple purposes, including fire protection, stock maintenance, and fish and wildlife conservation. Its buttress core design and sturdy foundations ensure its structural integrity, while the absence of a spillway underscores the importance of efficient water management practices. With a high hazard potential rating and a risk assessment score of 2, the dam requires diligent monitoring and maintenance to mitigate potential risks and ensure its continued effectiveness in flood protection.

As a key component of the Tulsa District's water resource infrastructure, the Little Elm and Laterals WS SCS Site 10 Dam exemplifies the critical intersection of water resource management and climate resilience. Its presence not only safeguards local communities and ecosystems from flooding impacts but also highlights the importance of sustainable water infrastructure in adapting to changing climatic conditions. With its storied history and ongoing role in flood risk reduction, this dam serves as a testament to the vital connection between water resources and climate adaptation efforts in the region.

Year Completed

1966

Dam Length

2098

Dam Height

24

River Or Stream

WALNUT FORK LITTLE ELM CREEK

Primary Dam Type

Earth

Surface Area

32

Hydraulic Height

24

Drainage Area

2.48

Nid Storage

1343

Structural Height

24

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

24
       
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.