Quentin Issac Dam Reservoir Report

Last Updated: December 5, 2025

Quentin Issac Dam, located in Hemphill, Texas, is a privately owned structure designed by the USDA NRCS and completed in 1968.


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Summary

This Earth-type dam stands at 26 feet in height and stretches 345 feet in length, serving a primary purpose that is classified as 'Other'. With a storage capacity of 54 acre-feet and a risk assessment rating of 'High (2)', the dam plays a crucial role in water resource management within the region.

Despite not being state regulated, Quentin Issac Dam is subject to state permitting and inspection processes, ensuring its structural integrity and adherence to safety standards. The dam, situated along the TR-WASHBURN ARROYO CREEK, is designed with a Buttress core type and a foundation that is listed as 'Unlisted/Unknown'. While lacking a spillway, the dam features a single outlet gate for water release when necessary.

Water resource and climate enthusiasts will be intrigued by Quentin Issac Dam's unique characteristics and its significant role in managing water flow and storage in the area. With its historical construction and ongoing maintenance, this dam stands as a testament to the importance of infrastructure in safeguarding communities against potential hazards and ensuring sustainable water resource management for future generations.

Year Completed

1968

Dam Length

345

Dam Height

26

River Or Stream

TR-WASHBURN ARROYO CREEK

Primary Dam Type

Earth

Hydraulic Height

26

Nid Storage

54

Structural Height

26

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

26
       
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.