Osborne Reservoir Report
Nearby: Lunt Randy Heady
Last Updated: December 5, 2025
Osborne, located in Bryan, Oklahoma, is a privately owned Earth dam that was completed in 1978 for the primary purpose of irrigation.
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Summary
Managed by the USDA NRCS, this structure on the TR-ISLAND BAYOU river stands at a height of 24 feet with a hydraulic height of 21 feet, providing a maximum storage capacity of 110 acre-feet. With a controlled spillway type and one outlet valve, Osborne is designed to cater to the water needs of the surrounding area while maintaining a low hazard potential.
Although Osborne has not been recently assessed for its condition, its risk assessment indicates a very high level of risk management measures in place, with a low hazard potential. The dam is regulated by the Oklahoma Water Resources Board (OWRB) and meets state permitting, inspection, and enforcement requirements, ensuring its compliance with safety standards. Despite its age, Osborne continues to play a crucial role in supporting irrigation activities in the region, showcasing the importance of sustainable water resource management in the face of climate challenges.
Year Completed |
1978 |
Dam Length |
458 |
Dam Height |
24 |
River Or Stream |
TR-ISLAND BAYOU |
Primary Dam Type |
Earth |
Hydraulic Height |
21 |
Nid Storage |
110 |
Structural Height |
24 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
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.
Osborne