Shear Tank Dam Reservoir Report
Nearby: Escondido Tank Dam Catarina Lake Dam
Last Updated: December 6, 2025
Shear Tank Dam, located in Dimmit, Texas, is a privately owned structure with a primary purpose classified as "Other." The dam, completed in 1974, stands at a height of 13 feet and has a length of 1000 feet.
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Summary
It has a storage capacity of 145 acre-feet and covers a surface area of 16 acres. The dam is an Earth type with a buttress core, designed to regulate the flow of TR-Catarina Creek.
Despite being privately owned, Shear Tank Dam falls under state jurisdiction and is subject to state permitting and inspection. The dam has not been rated for its condition assessment, but it has been identified as having a high risk potential, with no Emergency Action Plan (EAP) in place. With no spillway and a hazard potential that is not available, the dam presents a risk that needs to be carefully managed and monitored.
Water resource and climate enthusiasts may find Shear Tank Dam's design and construction details intriguing, as well as the potential risks associated with its high-risk classification. The dam's location on TR-Catarina Creek adds to its significance in water management and conservation efforts in the region. With its unique design features and storage capacity, Shear Tank Dam serves as a critical infrastructure for the surrounding area and warrants further attention and monitoring to ensure its safety and functionality.
Year Completed |
1974 |
Dam Length |
1000 |
Dam Height |
13 |
River Or Stream |
TR-CATARINA CREEK |
Primary Dam Type |
Earth |
Surface Area |
16 |
Hydraulic Height |
13 |
Nid Storage |
145 |
Structural Height |
13 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
13 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nueces Rv Nr Asherton
|
0cfs |
Nueces Rv At Cotulla
|
0cfs |
Frio Rv Nr Derby
|
0cfs |
San Casimiro Ck Nr Freer
|
0cfs |
Zacate Ck At Laredo
|
0cfs |
Nueces Rv Bl Uvalde
|
1cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Shear Tank Dam