Lower Hominy Reservoir Report

Last Updated: December 6, 2025

Lower Hominy, also known as Lower Lake Hominy, is a private water resource located in Hominy, Oklahoma, along the Penn Creek.


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Summary

Owned by a private entity and regulated by the Oklahoma Water Resources Board, this recreational dam stands at a height of 70 feet and has a storage capacity of 2000 acre-feet. With a surface area of 19 acres, Lower Hominy was completed in 1940 and serves primarily for recreational purposes.

Managed by the USDA NRCS, Lower Hominy has a controlled spillway and one outlet gate for water release. Despite its low hazard potential, the dam has a very high risk assessment rating due to its age and the potential consequences of failure. With a condition assessment of "Not Rated," the dam is inspected every five years to ensure its structural integrity and safety. Although no emergency action plan is currently in place, efforts are being made to meet safety guidelines and manage the risks associated with this structure.

Located within the Osage County, Oklahoma, Lower Hominy is a vital water resource for the local community and visitors alike. As climate change continues to impact water resources, it is crucial to monitor and maintain dams like Lower Hominy to ensure the safety of both the environment and the people who rely on its services.

Year Completed

1940

Dam Length

310

Dam Height

70

River Or Stream

PENN CREEK

Primary Dam Type

Earth

Surface Area

19

Hydraulic Height

55

Nid Storage

2000

Structural Height

70

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

70
       
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.