Sister Grove Creek Ws Scs Site 28 Dam Reservoir Report

Last Updated: December 5, 2025

Sister Grove Creek WS SCS Site 28 Dam, located in Grayson County, Texas, is a vital piece of infrastructure designed by the USDA NRCS in 1959 for flood risk reduction along the TR-Sister Grove Creek.


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Summary

Standing at a height of 34 feet with a length of 1475 feet, this earth dam plays a crucial role in managing water flow and protecting the surrounding area from potential flooding events. With a normal storage capacity of 200 acre-feet and a maximum storage of 964 acre-feet, the dam serves as a key resource for water management in the region.

While the dam does not feature a spillway, it is equipped with an outlet gate to regulate water release. Despite being classified as having a high risk potential, the condition assessment of the dam remains unrated. The State of Texas, through the TCEQ, is responsible for regulating, permitting, inspecting, and enforcing safety measures at the site. With the dam being in a state of constant evaluation and monitoring, it symbolizes the ongoing efforts to protect communities, infrastructure, and water resources in the face of changing climate conditions. For water resource and climate enthusiasts, the Sister Grove Creek WS SCS Site 28 Dam represents a significant structure in the management of water flow and flood risk reduction within the region.

Year Completed

1959

Dam Length

1475

Dam Height

34

River Or Stream

TR-SISTER GROVE CREEK

Primary Dam Type

Earth

Surface Area

34

Hydraulic Height

34

Drainage Area

2.15

Nid Storage

964

Structural Height

34

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

34
       
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.