Big Tank Dam Reservoir Report
Nearby: Parks Lake Dam Jones No 2 Dam
Last Updated: December 5, 2025
Big Tank Dam, located in Borden, Texas, was completed in 1965 primarily for irrigation purposes and stands at a height of 65 feet with a length of 600 feet.
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Summary
The dam, of earth construction with a buttress core, has a storage capacity of 490 acre-feet and a normal storage level of 185 acre-feet. Despite being unlisted for surface area and drainage area, the dam serves as a vital water resource for the surrounding area and the TR-Double Mtn Fk Brazos River.
Although the dam lacks a spillway, it is equipped with one outlet gate and has a high risk assessment level of 2. The last inspection was conducted in 1969, and the condition assessment is currently not rated. While the hazard potential and emergency preparedness information are not available, the dam remains a crucial infrastructure for irrigation, fire protection, and stock water supply in the region. With its historical significance and ongoing role in water management, Big Tank Dam is a remarkable structure for water resource and climate enthusiasts to explore and appreciate.
Year Completed |
1965 |
Dam Length |
600 |
Dam Height |
65 |
River Or Stream |
TR-DOUBLE MTN FK BRAZOS RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
65 |
Nid Storage |
490 |
Structural Height |
65 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
65 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Big Tank Dam