South Lower Jardin Tank Dam Reservoir Report
Nearby: West Losa Tank Dam Guyler Tank Dam
Last Updated: December 6, 2025
South Lower Jardin Tank Dam, located in Webb County, Texas, is a privately owned earth dam with a buttress core type.
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Summary
This dam, standing at a height of 26 feet, was built for purposes other than flood control or water supply. It has a storage capacity of 624 acre-feet and a normal storage level of 131 acre-feet, covering a surface area of 21.9 acres.
The dam, situated on the TR-RIO GRANDE river, is regulated by the Texas Commission on Environmental Quality (TCEQ) and undergoes regular inspections and enforcement measures to ensure its safety and compliance with state regulations. Despite its high hazard potential, the condition of the dam is currently not rated, highlighting the need for further assessment and risk management measures. The absence of a spillway and limited discharge capabilities raise concerns about the potential impact of a significant inflow event.
With its significant storage capacity and strategic location in Texas, South Lower Jardin Tank Dam serves as a critical water resource for the region. As climate change continues to pose challenges to water management and infrastructure resilience, ensuring the safety and efficiency of dams like this one becomes increasingly vital for sustainable water supply and flood mitigation efforts. Collaborative efforts between private owners, state agencies, and stakeholders will be essential in managing the risks associated with this dam and safeguarding the surrounding communities and ecosystems from potential hazards.
Dam Height |
26 |
River Or Stream |
TR-RIO GRANDE |
Primary Dam Type |
Earth |
Surface Area |
21.9 |
Nid Storage |
624 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
26 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nueces Rv Nr Asherton
|
0cfs |
Zacate Ck At Laredo
|
0cfs |
Nueces Rv At Cotulla
|
0cfs |
Rio Grande At Laredo
|
1760cfs |
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.
South Lower Jardin Tank Dam