Byars Reservoir Report
Last Updated: December 15, 2025
Byars is a local government-owned dam located in McClain, Oklahoma, with a primary purpose of flood risk reduction.
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Summary
Built in 1928, this earth dam stands at a height of 29 feet and spans 1270 feet in length. It is regulated by the Oklahoma Water Resources Board and undergoes regular inspections, with the last one conducted in 2005.
The dam has a storage capacity of 644 acre-feet, with a maximum discharge of 3765 cubic feet per second. It features a controlled spillway and is classified as having a low hazard potential. Despite being in operation for over 90 years, Byars has not been rated for its condition assessment, highlighting the need for further evaluation and potential risk management measures.
With a very high risk assessment rating, Byars serves as a critical infrastructure for flood control along the TR-EAST PEAVINE CR in Oklahoma. Its strategic location and design play a crucial role in mitigating flood risks in the region, making it a significant asset for water resource and climate enthusiasts to monitor and support for sustainable management and maintenance.
Year Completed |
1928 |
Dam Length |
1270 |
Dam Height |
29 |
River Or Stream |
TR-EAST PEAVINE CR |
Primary Dam Type |
Earth |
Hydraulic Height |
29 |
Nid Storage |
644 |
Structural Height |
29 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
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.
Byars