Pescado Tank Dam Reservoir Report

Last Updated: December 6, 2025

Pescado Tank Dam, located in Dimmit, Texas, stands as a vital water resource structure that has been serving the community since its completion in 1940.


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Summary

This private-owned Earth type dam, with a height of 14 feet and a length of 550 feet, plays a crucial role in regulating the flow of the TR-San Roque Creek. With a maximum storage capacity of 644 acre-feet and a normal storage capacity of 324 acre-feet, the dam provides essential water supply for various purposes.

Managed by the Texas Commission on Environmental Quality (TCEQ), Pescado Tank Dam is subject to regular state inspections, permitting, and enforcement to ensure its structural integrity and adherence to safety standards. Despite being rated as having a high risk potential, the dam's condition remains unrated, highlighting the need for ongoing monitoring and risk management measures. The absence of a spillway and limited information on hazard potential adds an element of complexity to the dam's risk profile, emphasizing the importance of maintaining a proactive approach to emergency preparedness.

As a significant component of the local water infrastructure, Pescado Tank Dam serves as a critical resource for water supply and management in the region. With its historical significance dating back to the mid-20th century, the dam stands as a testament to the importance of maintaining and regulating water resources for the benefit of both the environment and the community it serves.

Year Completed

1940

Dam Length

550

Dam Height

14

River Or Stream

TR-SAN ROQUE CREEK

Primary Dam Type

Earth

Surface Area

54

Hydraulic Height

14

Nid Storage

644

Structural Height

14

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

14
       
Seasonal Comparison

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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.