Richmond Maynard Reservoir Report
Last Updated: December 6, 2025
Richmond Maynard, located in Hughes County, Oklahoma, is a privately owned earth dam designed by the USDA NRCS and completed in 1977.
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Summary
This dam on TR-Yeager Creek stands at a height of 25 feet with a hydraulic height of 22 feet and a length of 500 feet. It serves a primary purpose of "Other" and has a low hazard potential, with a very high risk assessment ranking. The dam has a storage capacity of 125 acre-feet, with normal storage at 88 acre-feet.
Managed by the Oklahoma Water Resources Board, Richmond Maynard is regulated, permitted, inspected, and enforced by the state. It features a controlled spillway with a width of 1 foot and an outlet gate valve. Despite its age, the dam's condition has not been rated, and the last inspection was conducted in August 2011 with an inspection frequency of 5 years. Although the dam has not been modified in recent years, it remains a critical infrastructure with potential climate-related risks due to its location and high-risk assessment.
Overall, Richmond Maynard is a significant structure in the Tulsa District, providing crucial water resource management and flood control for the Wetumka area. As climate change continues to impact water resources, the proper maintenance and monitoring of dams like Richmond Maynard are essential to ensure the safety and resilience of communities in the face of changing environmental conditions.
Year Completed |
1977 |
Dam Length |
500 |
Dam Height |
25 |
River Or Stream |
TR-YEAGER CR |
Primary Dam Type |
Earth |
Hydraulic Height |
22 |
Nid Storage |
125 |
Structural Height |
25 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Canadian River Near Wetumka
|
209cfs |
Canadian River At Calvin
|
361cfs |
Little River Near Sasakwa
|
12cfs |
North Canadian River At Shawnee
|
177cfs |
Little River Near Tecumseh
|
8cfs |
Deep Fork Near Beggs
|
141cfs |
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.
Richmond Maynard