Rowlett Creek Ws Scs Site 7 Dam Reservoir Report

Last Updated: December 5, 2025

Rowlett Creek WS SCS Site 7 Dam, located in Collin County, Texas, is a vital piece of infrastructure designed by the USDA NRCS in 1957 for flood risk reduction along Maxwell Creek.


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Summary

This earth dam stands at a height of 38 feet and has a length of 1875 feet, providing a storage capacity of 4033 acre-feet. With a normal storage capacity of 200 acre-feet and a drainage area of 10.35 square miles, the dam serves multiple purposes including fire protection, stock or small fish pond, flood risk reduction, and recreation.

The dam features an uncontrolled spillway with a width of 353 feet and two uncontrolled outlet gates. Its condition assessment in 2015 rated it as fair, with a moderate risk level of 3. While the hazard potential is not available, the dam is inspected every 5 years to ensure its structural integrity. Despite its age, the Rowlett Creek WS SCS Site 7 Dam continues to play a critical role in managing water resources in the region and mitigating flood risks for local communities.

Managed by the local government and regulated by the Texas Commission on Environmental Quality (TCEQ), this dam remains an essential component of the water infrastructure in Collin County. With its historical significance and ongoing maintenance efforts, the Rowlett Creek WS SCS Site 7 Dam serves as a symbol of effective water resource management and climate resilience in the region.

Year Completed

1957

Dam Length

1875

Dam Height

38

River Or Stream

MAXWELL CREEK

Primary Dam Type

Earth

Surface Area

109

Hydraulic Height

38

Drainage Area

10.35

Nid Storage

4033

Structural Height

38

Outlet Gates

Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

38
       
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.