Dry Creek 13 Reservoir Report
Last Updated: December 9, 2025
Dry Creek 13 is a flood risk reduction structure located in Agra, Oklahoma, within the Tulsa District of the US Army Corps of Engineers.
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Summary
Built in 1995 by the USDA NRCS, this earth dam stands at 20 feet high and stretches 600 feet in length, providing storage for 99 acre-feet of water and serving a drainage area of 0.4 square miles. With a spillway width of 30 feet and a maximum discharge capacity of 231 cubic feet per second, the dam is designed to mitigate flooding along the Deep Fork and Canadian Rivers.
Despite its low hazard potential and moderate risk assessment, Dry Creek 13 has not been rated for its condition assessment. The structure, primarily funded, designed, and constructed by the Natural Resources Conservation Service, is not under state regulation or inspection. While it has an emergency action plan frequency of 5 years, details regarding its emergency preparedness, inundation maps, and risk management measures are unavailable. Nonetheless, this flood control dam plays a crucial role in managing water resources in Lincoln County and safeguarding the surrounding community from potential flood events.
Year Completed |
1995 |
Dam Length |
600 |
Dam Height |
20 |
River Or Stream |
DEEP FORK, CANADIAN RIVER |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
20 |
Drainage Area |
0.4 |
Nid Storage |
99 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cimarron River Near Ripley
|
528cfs |
Deep Fork At Warwick
|
23cfs |
North Canadian River Near Harrah
|
122cfs |
Cimarron River Near Guthrie
|
483cfs |
Black Bear Creek At Pawnee
|
10cfs |
Cottonwood Creek Near Seward
|
63cfs |
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 Creek 13