Lowry David C Reservoir Report

Last Updated: December 13, 2025

Lowry David C is a privately owned earth dam located in Harrah, Oklahoma, on the TR-North Canadian River.


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Summary

Built in 1965, this dam stands at a height of 17 feet and has a storage capacity of 100 acre-feet, with a normal storage capacity of 35 acre-feet. With a surface area of 7 acres, Lowry David C serves a primary purpose of "Other" and is regulated by the Oklahoma Water Resources Board.

Despite its low hazard potential, Lowry David C is classified as having a very high risk due to its condition assessment being labeled as "Not Rated." The dam has a spillway width of 1 foot and is equipped with a valve outlet gate. The last inspection of this structure was conducted in December 2010, with an inspection frequency of every 5 years. While the dam is not currently rated in terms of condition, its risk management measures and emergency action plan status remain undisclosed.

Water resource and climate enthusiasts interested in the infrastructure and management of dams will find Lowry David C to be a noteworthy case study. The dam's location, design, and regulatory oversight by the OWRB provide valuable insights into the complexities of maintaining and monitoring such critical water management structures. As an earth dam with stone core and soil foundation, Lowry David C presents a unique blend of engineering and environmental considerations that underscore the importance of proper risk assessment and management in ensuring the safety and integrity of water resources infrastructure.

Year Completed

1965

Dam Length

585

Dam Height

17

River Or Stream

TR-NORTH CANADIAN RIVER

Primary Dam Type

Earth

Surface Area

7

Hydraulic Height

17

Nid Storage

100

Structural Height

17

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

17
       
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.