Mulberry Dam Reservoir Report

Last Updated: December 6, 2025

Mulberry Dam in El Paso, Texas, stands as a critical flood risk reduction structure along the Rio Grande, completed in 1957 with a height of 60 feet and a length of 2670 feet.


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Summary

Designed by DAEN SWA and Lance Engineering, this earth dam with buttress core types rests on rock and soil foundations to provide necessary flood control measures for the surrounding area. The dam has an associated storage capacity of 1113 acre-feet and a drainage area of 4.21 square miles, with a maximum discharge capacity of 10701 cubic feet per second.

Maintained by local government authorities and regulated by the Texas Commission on Environmental Quality (TCEQ), Mulberry Dam has a fair condition assessment as of April 2021. The dam features an uncontrolled spillway with a width of 253 feet and four uncontrolled outlet gates. While the hazard potential and emergency action plan details are not available, the dam is deemed to have a moderate risk level. With a designated inspection frequency of 5 years, Mulberry Dam continues to play a crucial role in mitigating flood risks in the region, under the jurisdiction of the Albuquerque District of the US Army Corps of Engineers.

Years Modified

1982 - Other

Year Completed

1957

Dam Length

2670

Dam Height

60

River Or Stream

TR-RIO GRANDE

Primary Dam Type

Earth

Hydraulic Height

60

Drainage Area

4.21

Nid Storage

1113

Structural Height

60

Outlet Gates

Uncontrolled - 4

Hazard Potential

Not Available

Foundations

Rock, Soil

Nid Height

60
       
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.