Piedra Dam Reservoir Report
Nearby: Leland Lake Dam Xmas Tank Dam
Last Updated: December 6, 2025
Piedra Dam, located in Crystal City, Texas, along the Chimneas Creek, is a privately owned structure designed by the USDA NRCS.
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Summary
Completed in 1971, this earth dam stands at a height of 10 feet and stretches for 1700 feet, providing essential fire protection and serving as a stock or small fish pond. Managed by the TCEQ and regulated by the state, Piedra Dam has a storage capacity of 548 acre-feet and covers a surface area of 137 acres, catering to a drainage area of 8.7 square miles.
Despite lacking a spillway, Piedra Dam presents a high hazard potential with a risk assessment rating of 2. While its condition is not currently rated, the dam serves as a crucial resource for water management and climate resilience in the region. With no emergency action plan in place and limited data on inspections and maintenance, there is a need for continued monitoring and risk management measures to ensure the safety and functionality of Piedra Dam for the surrounding community and ecosystem. As a key component in the local water infrastructure, maintaining and improving Piedra Dam is essential for sustainable resource management in Maverick County, Texas.
Year Completed |
1971 |
Dam Length |
1700 |
Dam Height |
10 |
River Or Stream |
CHIMNEAS CREK |
Primary Dam Type |
Earth |
Surface Area |
137 |
Drainage Area |
8.7 |
Nid Storage |
548 |
Outlet Gates |
None - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
10 |
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.
Piedra Dam