Harris Lake Reservoir Report

Last Updated: December 5, 2025

Harris Lake, located in Bryan County, Oklahoma, is a privately owned reservoir with a primary purpose of irrigation.


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Summary

The Earth dam, constructed in 1969, stands at a height of 19 feet and has a storage capacity of 118 acre-feet. The lake covers a surface area of 14 acres and is fed by the Island Bayou.

Managed by the Oklahoma Water Resources Board, Harris Lake has a controlled spillway and a low hazard potential, with a very high risk assessment rating. The dam is regularly inspected and meets state regulatory standards for inspection, permitting, and enforcement. Although the condition assessment is currently not rated, the lake is equipped with a valve outlet gate for water release.

Despite its small size, Harris Lake plays a crucial role in providing irrigation water for agricultural purposes in the region. With its strategic location and well-maintained infrastructure, the lake serves as a valuable resource for water management and climate resilience in Bryan County, Oklahoma.

Year Completed

1969

Dam Length

850

Dam Height

19

River Or Stream

ISLAND BAYOU

Primary Dam Type

Earth

Surface Area

14

Hydraulic Height

16

Nid Storage

118

Structural Height

19

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

19
       
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.