Sister Grove Creek Ws Scs Site 1 Dam Reservoir Report

Last Updated: December 5, 2025

Sister Grove Creek WS SCS Site 1 Dam, located in Collin, Texas, is a vital structure designed by the USDA NRCS to reduce flood risks in the area.


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Summary

Completed in 1963, this earth dam stands at a height of 43 feet and spans a length of 1180 feet. With a storage capacity of 552 acre-feet, it serves multiple purposes including fire protection, stock or small fish pond, recreation, and flood risk reduction for the surrounding community.

Managed by local government authorities and regulated by the TCEQ, the dam is deemed to have a high risk potential and is currently not rated for its condition assessment. The absence of a spillway raises concerns for managing excess water flow during heavy rainfall events. While the dam is not under the jurisdiction of the USACE, ongoing inspections and enforcement activities by the state ensure the safety and integrity of the structure for the residents of Collin, Texas.

Water resource and climate enthusiasts will find Sister Grove Creek WS SCS Site 1 Dam to be an intriguing case study in flood risk management and dam infrastructure. The collaborative efforts of government agencies and designers highlight the importance of proactive measures in safeguarding communities against potential hazards. As discussions around water resource management continue to evolve, understanding the role of dams like this one in mitigating flood risks becomes increasingly crucial for sustainable development in the region.

Year Completed

1963

Dam Length

1180

Dam Height

43

River Or Stream

TR-SISTER GROVE CREEK

Primary Dam Type

Earth

Surface Area

11.9

Hydraulic Height

43

Drainage Area

1.06

Nid Storage

552

Structural Height

43

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

43
       
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.