Adams Reservoir Report
Last Updated: December 9, 2025
Adams is a privately owned dam located in Osage, Oklahoma, specifically in the city of Grainola.
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Summary
Completed in 1960, this earth dam stands at a height of 30 feet and has a hydraulic height of 20 feet. It serves as a crucial structure on TR-ANTELOPE CRK, with a length of 2000 feet and a storage capacity of 1500 acre-feet. The dam is regulated by the Oklahoma Water Resources Board (OWRB) and has state jurisdiction, permitting, inspection, and enforcement in place to ensure its safety and compliance with regulations.
Despite being rated with a low hazard potential, Adams faces a very high risk due to its age and condition assessment being listed as "Not Rated". The dam has one valve outlet gate and a controlled spillway with a width of 4 feet. While the dam is currently in a stable condition, it is essential for regular inspections to be conducted, as the last inspection took place in September 2011. With the very high risk associated with Adams, it is crucial for risk management measures to be implemented and for emergency action plans to be prepared and regularly updated to ensure the safety of the surrounding community and environment.
Adams, situated in the Tulsa District of Oklahoma, plays a vital role in water resource management and climate adaptation efforts in the region. As a key infrastructure for flood control and water storage, the dam's condition and maintenance are of utmost importance to prevent any potential hazards or risks. With its relatively low hazard potential but very high risk rating, Adams serves as a reminder of the critical need for ongoing monitoring, assessment, and management of aging dams to ensure the safety and security of the community and the environment they serve.
Year Completed |
1960 |
Dam Length |
2000 |
Dam Height |
30 |
River Or Stream |
TR-ANTELOPE CRK |
Primary Dam Type |
Earth |
Surface Area |
63 |
Hydraulic Height |
20 |
Nid Storage |
1500 |
Structural Height |
30 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Caney R Nr Elgin
|
39cfs |
Arkansas R At Arkansas City
|
1100cfs |
Walnut R At Winfield
|
855cfs |
Arkansas River At Ralston
|
1500cfs |
Hominy Creek Near Hominy
|
2cfs |
Caney River Above Coon Creek At Bartlesville
|
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.
Adams