Diamond Shamrock Off - Channel Leree Reservoir Report

Last Updated: December 5, 2025

Diamond Shamrock Off - Channel Leree is a private irrigation dam located in Jim Wells County, Texas, along the OFF CH-FRIO RIVER.


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Summary

Completed in 1985, this earth dam stands at 21 feet tall with a length of 2600 feet and a storage capacity of 200 acre-feet. Despite being privately owned, the state of Texas regulates and inspects the dam regularly to ensure its safety and compliance with state permitting requirements.

The dam has a buttress core type and is primarily used for irrigation purposes. It has a spillway width of 0 feet and no locks associated with it. The hazard potential of the dam is not available, but the risk assessment categorizes it as high. While the condition assessment is not rated, the dam is regularly inspected to monitor its stability and functionality. Overall, Diamond Shamrock Off - Channel Leree plays a crucial role in water management for agricultural purposes in the region.

With its location along the OFF CH-FRIO RIVER, this dam contributes to the water resource infrastructure in Texas, providing essential water storage for irrigation purposes. As climate change continues to impact water availability and usage patterns, structures like Diamond Shamrock Off - Channel Leree become increasingly important for sustainable water management in the region. The dam's risk management measures and regular inspections help mitigate potential hazards and ensure the safety of surrounding communities and agricultural lands.

Year Completed

1985

Dam Length

2600

Dam Height

21

River Or Stream

OFF CH-FRIO RIVER

Primary Dam Type

Earth

Hydraulic Height

21

Nid Storage

200

Structural Height

23

Outlet Gates

None - 1

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

23
       
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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.