Sanderson Canyon Ws Scs Site 3 Dam Reservoir Report

Last Updated: February 11, 2026

Sanderson Canyon WS SCS Site 3 Dam, located in Pecos, Texas, stands as a crucial flood risk reduction structure along the TR-Sanderson Canyon river or stream.


Summary

Built in 1985 by Benham, Blair, the dam is primarily owned and regulated by the local government with oversight from the Texas Commission on Environmental Quality (TCEQ). This earth dam, with a height of 39 feet and a length of 3265 feet, serves to mitigate flood risks in the region, offering storage capacity of 3222 acre-feet and a normal storage level of 148 acre-feet.

The dam's spillway, equipped with uncontrolled outlets and slide gates, has a width of 153 feet and a maximum discharge capacity of 10,422 cubic feet per second. Despite its last inspection in 2014 and a satisfactory condition assessment in 2017, the dam poses a moderate risk level (3) according to the hazard potential assessment. With a drainage area of 7.95 square miles and a surface area of 32 acres, the dam plays a vital role in managing water resources in the region, ensuring the safety of nearby communities in times of heightened water flow.

As an essential structure for flood risk reduction in the area, Sanderson Canyon WS SCS Site 3 Dam serves as a testament to the importance of effective water resource management and climate resilience. With its strategic location and design, the dam continues to safeguard the surrounding environment and communities from potential flood hazards, showcasing the collaborative efforts between local government agencies, designers, and regulatory bodies to uphold the safety and well-being of the region's water resources and inhabitants.



°F

°F

mph

Wind

%

Humidity


15-Day Weather Outlook


Year Completed

1985

Dam Length

3265

Dam Height

39

River Or Stream

TR-SANDERSON CANYON

Primary Dam Type

Earth

Surface Area

32

Hydraulic Height

39

Drainage Area

7.95

Nid Storage

3222

Structural Height

53

Outlet Gates

Slide (sluice gate) - 1, Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Soil

Nid Height

53
       
Seasonal Comparison

5-Day Hourly Forecast Detail

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.