H & N Co. Reservoir Report

Last Updated: December 17, 2025

H & N Co.


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Summary

is a privately owned dam located in Coyle, Oklahoma, along the TR-Skeleton Creek. Built in 1977, this earth dam stands at a height of 25 feet and has a storage capacity of 51 acre-feet, primarily for recreational purposes. With a low hazard potential and a very high risk assessment rating, H & N Co. is regulated by the Oklahoma Water Resources Board, ensuring that it meets state inspection, enforcement, and permitting requirements.

Although the dam has not been rated for its condition assessment, it is equipped with a controlled spillway and a single valve outlet gate. The surrounding area covers 3 acres, providing a small surface area for recreational activities. Despite its relatively low hazard potential, H & N Co. is considered to have a high risk due to its location and design. The dam is under the jurisdiction of the Tulsa District of the US Army Corps of Engineers and is subject to regular inspections every 5 years.

Water resource and climate enthusiasts would be intrigued by the unique features and regulatory aspects of H & N Co. The dam's location along the TR-Skeleton Creek offers opportunities for water recreation while also highlighting the importance of proper regulation and maintenance to mitigate risks. With a focus on state oversight and compliance, this privately owned structure serves as a reminder of the delicate balance between water resource management and environmental protection in Oklahoma.

Year Completed

1977

Dam Length

205

Dam Height

25

River Or Stream

TR-SKELETON CREEK

Primary Dam Type

Earth

Surface Area

3

Hydraulic Height

25

Nid Storage

51

Structural Height

25

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

25
       
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.