4th July Tank Dam Reservoir Report
Nearby: Johnson Lake Dam Cometa Lake Dam
Last Updated: December 12, 2025
Located in Zavala, Texas, the 4th July Tank Dam is a privately owned structure primarily used for fire protection, stock, or as a small fish pond.
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Summary
Built in 1973, this earth dam stands at a height of 10 feet and has a length of 900 feet, with a storage capacity of 72 acre-feet. Despite its modest size, the dam serves an important purpose in the region, providing essential water resources for local residents and wildlife.
Situated along the TR-CHAPARROSA CREEK, the 4th July Tank Dam is managed by private owners and falls under the jurisdiction of the state of Texas. While it does not have a spillway, the dam features one outlet gate for water release. With a risk assessment rating of High (2), there is a need for regular inspections and potential risk management measures to ensure the safety and efficiency of the structure. Water resource and climate enthusiasts will find the history and specifications of the 4th July Tank Dam fascinating, as it plays a crucial role in supporting the surrounding ecosystem and community.
As a key feature in the Fort Worth District of Texas, the 4th July Tank Dam stands as a testament to the importance of water management and conservation in the region. With its unique design and purpose, this earth dam serves as a vital resource for maintaining water levels and supporting various activities in the area. Despite its relatively small size, the dam's impact on the local environment and economy is significant, making it a valuable asset for water resource and climate enthusiasts to study and appreciate.
Year Completed |
1973 |
Dam Length |
900 |
Dam Height |
10 |
River Or Stream |
TR-CHAPARROSA CREEK |
Primary Dam Type |
Earth |
Surface Area |
13 |
Hydraulic Height |
10 |
Nid Storage |
72 |
Structural Height |
10 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
10 |
Seasonal Comparison
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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.
4th July Tank Dam