Peters Lynn Reservoir Report

Last Updated: December 6, 2025

Peters Lynn is a privately owned earth dam located in Hughes County, Oklahoma, specifically in the city of Bilby.


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Summary

Built by the USDA NRCS in 1977, it serves as a vital structure for water resource management in the region. The dam stands at a height of 35 feet with a hydraulic height of 30 feet, containing a storage capacity of 140 acre-feet and a maximum discharge of 953 cubic feet per second.

Managed and regulated by the Oklahoma Water Resources Board (OWRB), Peters Lynn plays a crucial role in flood control and water supply management for the surrounding area. With a low hazard potential and a very high risk assessment rating, the dam is regularly inspected and maintained by state authorities to ensure its structural integrity and functionality. Despite its importance, the dam's condition assessment is currently marked as "Not Rated," indicating the need for further evaluation and potential upgrades to meet modern safety standards.

As a key feature in the local water infrastructure, Peters Lynn stands as a testament to the collaborative efforts between private owners, federal agencies, and state regulators in safeguarding water resources and managing climate-related risks in Oklahoma. Its controlled spillway, valve outlet gates, and earth core construction highlight the careful design and engineering that go into maintaining the dam's functionality and safety for the community it serves. Moving forward, continued monitoring and risk management measures will be essential to ensure the long-term resilience and effectiveness of Peters Lynn in the face of changing environmental conditions.

Year Completed

1977

Dam Length

186

Dam Height

35

River Or Stream

BIRD CR

Primary Dam Type

Earth

Hydraulic Height

30

Nid Storage

140

Structural Height

35

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

35
       
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.