Upshaw Lake Dam Reservoir Report

Last Updated: December 5, 2025

Upshaw Lake Dam, located in Comanche, Texas, was completed in 1968 for the primary purpose of irrigation.


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Summary

This private Earth dam stands at a height of 23 feet and stretches 350 feet in length, with a storage capacity of 63 acre-feet. The dam, situated on the TR-Sabana River and owned by a private entity, does not have a spillway and features a buttress core type.

Despite its high hazard potential rating, Upshaw Lake Dam is currently not regulated by the state and has not been subject to any inspections or condition assessments. The dam poses a risk level of 2, classified as high, in terms of potential hazards. While it lacks certain safety measures such as emergency action plans and updated contact information, the dam remains an essential resource for irrigation in the area.

For water resource and climate enthusiasts, Upshaw Lake Dam serves as a notable structure that highlights the importance of proper management and regulation of dams. With its significant storage capacity and key role in irrigation, the dam presents both opportunities and challenges in terms of ensuring its safety and functionality for the surrounding community. As efforts to monitor and assess the condition of Upshaw Lake Dam continue, it stands as a focal point for discussions on water resource management and risk mitigation in the face of changing climate conditions.

Year Completed

1968

Dam Length

350

Dam Height

23

River Or Stream

TR-SABANA RIVER

Primary Dam Type

Earth

Hydraulic Height

23

Nid Storage

63

Structural Height

23

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

23
       
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.