Minyard Chas. Reservoir Report
Nearby: Seabrook R.J. Krob Herbert R.
Last Updated: December 17, 2025
Minyard Chas.
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Summary
is a private dam located in Guthrie, Oklahoma, regulated by the Oklahoma Water Resources Board. Built in 1965, this earth dam stands at 30 feet tall and spans a length of 350 feet, with a storage capacity of 75 acre-feet. The dam serves a primary purpose other than flood control or water supply, with a controlled spillway and valve outlet gate.
Despite being classified as having low hazard potential, Minyard Chas. is considered to have a very high risk level, with a risk assessment rating of 1 out of 5. The dam has not been rated for its condition assessment, and the last inspection was conducted in August 2011. The emergency action plan status, inundation maps, and risk management measures for the dam are currently unknown.
Water resource and climate enthusiasts may find Minyard Chas. intriguing due to its unique design features and risk assessment profile. The location along the TR-GAR CR river provides insight into the management of water resources in the area. As a privately owned structure, the dam's maintenance and regulatory oversight by the OWRB highlight the importance of effective governance in ensuring the safety and sustainability of water infrastructure in Oklahoma.
Year Completed |
1965 |
Dam Length |
350 |
Dam Height |
30 |
River Or Stream |
TR-GAR CR |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
30 |
Nid Storage |
75 |
Structural Height |
30 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
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.
Minyard Chas.