Dry Devils And Lowrey Ws Scs Site 11 Dam Reservoir Report
Last Updated: December 22, 2025
Dry Devils and Lowrey WS SCS Site 11 Dam, located in Sutton County, Texas, is a critical infrastructure designed by the USDA NRCS to reduce flood risk in the area.
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Summary
Completed in 1960, this earth dam stands at a height of 48 feet and spans a length of 1810 feet, with a storage capacity of 9756 acre-feet. The dam is regulated by the Texas Commission on Environmental Quality (TCEQ) and undergoes regular inspections to ensure its structural integrity.
The dam's primary purpose is flood risk reduction, with a spillway width of 403 feet to handle maximum discharges of up to 36730 cubic feet per second. Despite not having a hazard potential rating available, the dam is assessed to be in satisfactory condition as of April 2021. With a drainage area of 16.9 square miles and a normal storage capacity of 189 acre-feet, the dam plays a crucial role in managing water resources in the region and protecting downstream communities from potential flooding events.
Although the dam's Emergency Action Plan (EAP) status and risk assessment details are not provided in the data, the overall risk management measures are deemed moderate. As a notable structure in the Fort Worth District, Dry Devils and Lowrey WS SCS Site 11 Dam serves as a key component in the local water resource management system, highlighting the importance of sustainable infrastructure for climate resilience in the face of changing environmental conditions.
Year Completed |
1960 |
Dam Length |
1810 |
Dam Height |
48 |
River Or Stream |
TR-LOWREY DRAW |
Primary Dam Type |
Earth |
Surface Area |
31 |
Hydraulic Height |
48 |
Drainage Area |
16.9 |
Nid Storage |
9756 |
Structural Height |
48 |
Outlet Gates |
Uncontrolled - 3, Valve - 1 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
48 |
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 11 Dam