Dry Devils And Lowrey Ws Scs Site 12 Dam Reservoir Report
Last Updated: December 22, 2025
Located in Sonora, Texas, the Dry Devils and Lowrey WS SCS Site 12 Dam stands as a testament to flood risk reduction efforts in the area.
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Summary
Built in 1959 by the USDA NRCS, this earth dam spans 1475 feet in length and reaches a height of 37 feet, with a storage capacity of 2076 acre-feet. Designed for the primary purpose of flood risk reduction, this structure plays a crucial role in protecting the surrounding area from potential water-related hazards.
Managed by the TCEQ and subject to state regulation, the dam is inspected every five years to ensure its structural integrity. With a fair condition assessment as of April 2021, the dam has a moderate risk level assigned to it, indicating the need for ongoing monitoring and potential risk management measures. Equipped with one slide and two uncontrolled outlet gates, the dam is prepared to handle maximum discharges of 2076 cubic feet per second.
As an important piece of infrastructure in Sutton County, the Dry Devils and Lowrey WS SCS Site 12 Dam serves as a vital tool in safeguarding the community against flooding events. With its strategic location on TR-LOWREY DRAW and close proximity to the city of Sonora, this dam plays a critical role in mitigating water-related risks and ensuring the safety and well-being of local residents.
Year Completed |
1959 |
Dam Length |
1475 |
Dam Height |
37 |
River Or Stream |
TR-LOWREY DRAW |
Primary Dam Type |
Earth |
Surface Area |
20 |
Hydraulic Height |
37 |
Drainage Area |
4.38 |
Nid Storage |
2076 |
Structural Height |
37 |
Outlet Gates |
Slide (sluice gate) - 1, Uncontrolled - 2 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
37 |
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.
Dry Devils And Lowrey Ws Scs Site 12 Dam