Kelly Bros. Reservoir Report
Last Updated: December 6, 2025
Kelly Bros.
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Summary
is a privately owned dam located in Nuyaka, Oklahoma, along the TR-Hopper Creek. Constructed in 1950, this earth dam stands at a height of 40 feet and has a storage capacity of 800 acre-feet. The dam serves a primary purpose of "Other" and is regulated by the Oklahoma Water Resources Board (OWRB).
With a low hazard potential and a very high risk assessment rating, Kelly Bros. faces potential risks that require careful monitoring and management. The dam features a controlled spillway and a single valve outlet gate. Although it has not been rated for its condition, the dam undergoes inspections every five years, with the last inspection conducted in August 2011.
Water resource and climate enthusiasts interested in the Kelly Bros. dam can appreciate its historical significance and the critical role it plays in managing water resources in Creek County, Oklahoma. The dam's location, design details, and regulatory oversight by the OWRB make it a noteworthy structure for those interested in the intersection of water management and environmental conservation.
Year Completed |
1950 |
Dam Length |
690 |
Dam Height |
40 |
River Or Stream |
TR-HOPPER CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
40 |
Nid Storage |
800 |
Structural Height |
40 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
40 |
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.
Kelly Bros.