Las Minas Ranch Dam No 1-59 Reservoir Report
Last Updated: December 5, 2025
Las Minas Ranch Dam No 1-59, located in Webb County, Texas, was completed in 1959 under the supervision of the USDA NRCS.
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Summary
This private earth dam serves the primary purposes of fire protection, stock, or small fish pond. With a height of 20 feet and a length of 820 feet, the dam has a storage capacity of 158 acre-feet and covers a surface area of 12 acres.
Although the dam does not have a spillway, it is equipped with one outlet gate. While it has not been rated for condition assessment, the risk potential is considered high. Despite not being state regulated, the dam is subject to state permitting and inspection requirements. The structure plays a crucial role in water resource management in the region, contributing to the conservation and utilization of water resources for agricultural and ecological purposes.
Las Minas Ranch Dam No 1-59 stands as a testament to the collaborative efforts of the Natural Resources Conservation Service and the private owners in safeguarding water resources and ensuring the sustainability of the surrounding ecosystem. As a key component of the water infrastructure in the area, the dam serves as a vital resource for mitigating fire risks, supporting livestock operations, and maintaining a healthy aquatic habitat. Its strategic location along the TR-Rio Grande further underscores its significance in the region's water management and climate resilience efforts.
Year Completed |
1959 |
Dam Length |
820 |
Dam Height |
20 |
River Or Stream |
TR-RIO GRANDE |
Primary Dam Type |
Earth |
Surface Area |
12 |
Drainage Area |
0.4 |
Nid Storage |
158 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Zacate Ck At Laredo
|
0cfs |
Rio Grande At Laredo
|
1760cfs |
San Casimiro Ck Nr Freer
|
0cfs |
Nueces Rv Nr Asherton
|
0cfs |
Nueces Rv At Cotulla
|
0cfs |
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.
Las Minas Ranch Dam No 1-59