Alamo Arroyo Ws Scs Site 3 Dam Reservoir Report

Last Updated: March 13, 2026

The Alamo Arroyo WS SCS Site 3 Dam, located in Acala, Texas, is a vital structure designed by the USDA NRCS to mitigate flood risks along the Alamo Arroyo river.


Summary

Completed in 1960, this earth dam stands at a height of 47 feet and spans a length of 1820 feet, providing essential flood risk reduction and irrigation benefits to the region. With a storage capacity of 5420 acre-feet and a maximum discharge of 14190 cubic feet per second, this dam plays a crucial role in managing water resources in the area.

Maintained by the TCEQ and inspected regularly, the Alamo Arroyo WS SCS Site 3 Dam is in fair condition, with a risk assessment rating of moderate. The dam's spillway, which is uncontrolled and 405 feet wide, ensures efficient water release during periods of high flow. Despite being structurally modified in 1982, the dam remains a key infrastructure for water management in the region. With a history of serving the community for over six decades, this dam continues to play a crucial role in safeguarding against flooding and supporting irrigation needs in the Hudspeth County area.

As climate change continues to impact water resources, the Alamo Arroyo WS SCS Site 3 Dam stands as a testament to the importance of proactive flood risk reduction measures. With a focus on safety and efficient water management, this dam exemplifies the collaborative efforts between local government and federal agencies in ensuring the resilience of water infrastructure. As enthusiasts in water resource and climate management, it is essential to recognize the significance of structures like the Alamo Arroyo WS SCS Site 3 Dam in safeguarding communities and ecosystems against the challenges of a changing climate.



°F

°F

mph

Wind

%

Humidity


15-Day Weather Outlook


Years Modified

1982 - Structural

Year Completed

1960

Dam Length

1820

Dam Height

47

River Or Stream

ALAMO ARROYO

Primary Dam Type

Earth

Surface Area

150

Hydraulic Height

47

Drainage Area

94.5

Nid Storage

5420

Structural Height

48

Outlet Gates

Uncontrolled - 2, Valve - 1

Hazard Potential

Not Available

Foundations

Rock, Soil

Nid Height

48
       
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.
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