Shotwell No 1 Reservoir Report
Nearby: Shotwell No 7 Shotwell No 2
Last Updated: December 19, 2025
Shotwell No 1, located in Beckham County, Oklahoma, is a privately owned earth dam designed by USDA NRCS to reduce flood risks along TR-LONG CREEK.
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Summary
Completed in 1979, this dam stands at 30 feet tall, with a storage capacity of 99 acre-feet and a maximum discharge of 1860 cubic feet per second. The dam's spillway, controlled by a 1-foot wide structure, helps manage water levels during high flow events. Despite being classified as low hazard potential, the dam poses a very high risk due to its critical role in flood risk reduction for the surrounding area.
Maintained and regulated by the Oklahoma Water Resources Board, Shotwell No 1 has undergone inspections every 5 years, with the last inspection recorded in November 2010. The dam's primary purpose is flood risk reduction, with a focus on protecting the local community from potential inundation. While the dam's condition assessment is currently not rated, its risk management measures and emergency action plans are crucial aspects that need to be addressed to ensure the safety and integrity of the structure in the face of climate change challenges. With its strategic location and vital role in water resource management, Shotwell No 1 serves as a key asset in safeguarding the local environment and community from the impacts of extreme weather events.
Year Completed |
1979 |
Dam Length |
400 |
Dam Height |
30 |
River Or Stream |
TR-LONG CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
26 |
Nid Storage |
99 |
Structural Height |
30 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
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.
Shotwell No 1