Hominy Reservoir Report

Last Updated: December 6, 2025

Hominy, also known as Hominy Lake, is a privately owned earth dam located in Osage, Oklahoma.


°F

°F

mph

Wind

%

Humidity

Summary

Constructed in 1940, this dam serves as a vital water supply source, with a storage capacity of 900 acre-feet and a surface area of 24 acres. It is situated on Penn Creek, which is a tributary of the Arkansas River, and is regulated by the Oklahoma Water Resources Board (OWRB).

With a dam height of 30 feet and a hydraulic height of 20 feet, Hominy is classified as having a low hazard potential, but a very high risk assessment rating. Despite its condition not being rated, the dam undergoes regular inspections every five years to ensure its safety and integrity. The spillway type is controlled, with a width of 2 feet, and it is equipped with a valve outlet gate for water release.

The surrounding area benefits from Hominy's water storage capabilities, providing a reliable source for agricultural, industrial, and municipal purposes. Climate enthusiasts will appreciate the role this dam plays in water resource management and its contribution to sustaining the ecosystem in the region.

Year Completed

1940

Dam Length

400

Dam Height

30

River Or Stream

PENN CREEK

Primary Dam Type

Earth

Surface Area

24

Hydraulic Height

20

Nid Storage

900

Structural Height

30

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

30
       
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.