Sister Grove Creek Ws Scs Site 6 Dam Reservoir Report

Last Updated: December 5, 2025

Sister Grove Creek WS SCS Site 6 Dam is a vital flood risk reduction structure located in Collin, Texas.


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Summary

Built in 1959 by the USDA NRCS, this Earth-type dam stands at a height of 48 feet and spans 1150 feet. With a storage capacity of 333 acre-feet and a normal storage of 62 acre-feet, this dam plays a crucial role in protecting the surrounding area from flooding events.

Managed by the Texas Commission on Environmental Quality (TCEQ), this dam is state-regulated and regularly inspected for safety and compliance. Although the dam does not have a spillway, it serves multiple purposes including fire protection, stock watering, and recreation. The risk assessment categorizes this dam as having a high risk potential, highlighting the importance of effective risk management measures to ensure the safety of the community and the environment.

Situated on the banks of the Sister Grove Creek, this dam not only provides flood protection but also offers opportunities for recreational activities and wildlife habitat enhancement. With its strategic location and effective design, Sister Grove Creek WS SCS Site 6 Dam stands as a testament to the importance of water resource management and climate resilience in the region.

Year Completed

1959

Dam Length

1150

Dam Height

48

River Or Stream

TR-SISTER GROVE CREEK

Primary Dam Type

Earth

Surface Area

7.6

Hydraulic Height

48

Drainage Area

0.54

Nid Storage

333

Structural Height

48

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

48
       
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.