Oteka Lake Reservoir Report

Last Updated: December 6, 2025

Located in Marshall County, Oklahoma, Oteka Lake is a privately owned reservoir primarily used for water supply.


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Summary

Constructed in 1962, this Earth dam stands at a height of 40 feet and has a capacity of 1,120 acre-feet. With a normal storage capacity of 380 acre-feet, Oteka Lake covers an area of 47 acres and is fed by Turkey Creek.

Managed by the OWRB and regulated by the state of Oklahoma, Oteka Lake has a controlled spillway with a width of 2 feet. Although the dam has a low hazard potential, it is considered to have a very high risk rating. The last inspection in 2010 found the dam to be in a not rated condition, with a recommended inspection frequency of every 5 years. Despite its small size, Oteka Lake plays a crucial role in the local water resource management and climate adaptation efforts.

For water resource and climate enthusiasts, Oteka Lake offers a fascinating case study in dam construction and management. With its stone core and soil foundation, this reservoir serves as a vital water supply source in the region. As climate change continues to impact water availability and quality, the importance of well-maintained infrastructure like Oteka Lake cannot be overstated.

Year Completed

1962

Dam Length

1260

Dam Height

40

River Or Stream

TURKEY CREEK

Primary Dam Type

Earth

Surface Area

47

Hydraulic Height

40

Nid Storage

1120

Structural Height

40

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

40
       
Seasonal Comparison

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.