Callaway Reservoir Report
Nearby: Darrell Callaway Elmer Williams
Last Updated: December 5, 2025
Callaway, located in Bryan County, Oklahoma, is a privately owned irrigation dam constructed in 1955 by the USDA NRCS.
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Summary
The dam stands at a height of 29 feet with a hydraulic height of 27 feet, serving the primary purpose of irrigation along the North Branch river. With a storage capacity of 70 acre-feet and a controlled spillway type, Callaway provides essential water resources for agricultural activities in the region. Despite its low hazard potential, the dam is classified as having a very high risk due to its age and condition assessment being marked as "not rated".
Managed by the Oklahoma Water Resources Board, Callaway undergoes regular inspections, with the last one conducted in October 2009. While the dam has a single valve outlet gate, it lacks an Emergency Action Plan (EAP) and inundation maps, raising concerns about emergency preparedness in case of a catastrophic event. With state jurisdiction and regulatory oversight in place, Callaway's risk management measures are currently unspecified, leaving room for improvement in ensuring the safety and sustainability of this vital water resource infrastructure.
Year Completed |
1955 |
Dam Length |
800 |
Dam Height |
29 |
River Or Stream |
NORTH BRANCH |
Primary Dam Type |
Earth |
Hydraulic Height |
27 |
Nid Storage |
70 |
Structural Height |
29 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
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.
Callaway