City Of Dumas Lake Dam Reservoir Report
Last Updated: December 5, 2025
City of Dumas Lake Dam, located in Moore County, Texas, was completed in 1973 by Burns-McMorris Const Co and is owned by the local government.
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Summary
The dam sits on TR-Big Blue Creek and serves the primary purpose of flood risk reduction, with additional recreational benefits. Standing at 55 feet tall and stretching 1300 feet in length, the earth dam is supported by stone core types on a foundation of rock and soil.
With a normal storage capacity of 696 acre-feet and a maximum storage of 1462 acre-feet, City of Dumas Lake Dam plays a crucial role in managing water resources in the area. The dam features an uncontrolled spillway with a width of 130 feet and is regulated by the Texas Commission on Environmental Quality (TCEQ). Despite its moderate risk rating, the dam's condition assessment is currently not rated, highlighting the need for ongoing inspection and maintenance to ensure its safety and effectiveness in flood risk reduction. For water resource and climate enthusiasts, City of Dumas Lake Dam presents a fascinating case study in dam engineering and management practices.
Year Completed |
1973 |
Dam Length |
1300 |
Dam Height |
50 |
River Or Stream |
TR-BIG BLUE CREEK |
Primary Dam Type |
Earth |
Surface Area |
60 |
Hydraulic Height |
50 |
Drainage Area |
3.5 |
Nid Storage |
1462 |
Structural Height |
55 |
Outlet Gates |
Other Controlled - 1, Uncontrolled - 3 |
Hazard Potential |
Not Available |
Foundations |
Rock, Soil |
Nid Height |
55 |
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.
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