Lake Overholser Near Oklahoma City Reservoir Report

Last Updated: December 9, 2025

Lake Overholser is a reservoir in Oklahoma City, Oklahoma.


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Summary

The lake was created in 1919 as a result of the construction of the Overholser Dam on the North Canadian River. The lake provides a source of drinking water for the city, as well as a venue for recreational activities such as fishing and boating. The hydrology of Lake Overholser is influenced by the North Canadian River, which provides surface flow to the lake. The lake is also supplied by snowpack from the surrounding mountains, which melts and flows into the river. The lake is used for agricultural purposes as well, with irrigation systems drawing water from the lake to irrigate crops in the surrounding farmland. Overall, Lake Overholser is an important resource for the city of Oklahoma City and the surrounding region.

Reservoir Details

Gage Height, Ft 24hr Change 0.0%
Percent of Normal 100%
Minimum 1,231.1 ft
2011-10-08
Maximum 1,243.45 ft
2013-06-02
Average 1,240 ft
Dam_Height 61
Hydraulic_Height 61
Drainage_Area 738
Year_Completed 1919
Nid_Storage 31100
Structural_Height 61
River_Or_Stream N. CANADIAN RIVER
Foundations Soil
Surface_Area 1500
Hazard_Potential High
Outlet_Gates Slide (sluice gate) - 4, Tainter (radial) - 24, Uncontrolled - 1
Dam_Length 17100
Primary_Dam_Type Earth
Nid_Height 61
       
Seasonal Comparison
Reservoir Storage, Acre-Ft Levels
Gage Height, Ft Levels
Dcp Battery Voltage, V Levels

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.