Grizzley Creek Reservoir No. 2 Reservoir Report

Last Updated: December 5, 2025

Grizzley Creek Reservoir No.


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Summary

2, located in the picturesque city of Pinehurst, Oregon, is a privately owned water resource structure that plays a vital role in irrigation. Built in 1955, this earth dam stands at a height of 10 feet and has a storage capacity of 360 acre-feet, with a normal storage level of 273 acre-feet. The reservoir covers a surface area of 43 acres and is fed by the North Fork Grizzley Creek.

Despite its low hazard potential, Grizzley Creek Reservoir No. 2 is regulated by the Oregon Water Resources Department and undergoes regular inspections to ensure its structural integrity. The dam features a slide (sluice gate) outlet and has a maximum discharge capacity of 91 cubic feet per second. The reservoir serves as a crucial source of water for irrigation purposes in the region, highlighting its significance in supporting agricultural activities in the area.

With its serene location and essential role in supporting local irrigation needs, Grizzley Creek Reservoir No. 2 stands as a testament to the importance of water resource management in sustaining agricultural productivity. As a well-maintained and regulated structure, it serves as a reliable source of water for the surrounding community while also contributing to the overall water management efforts in Oregon.

Year Completed

1955

Dam Length

590

Dam Height

10

River Or Stream

NORTH FORK GRIZZLEY CREEK

Primary Dam Type

Earth

Surface Area

43

Hydraulic Height

8

Drainage Area

1

Nid Storage

360

Structural Height

14

Outlet Gates

Slide (sluice gate)

Hazard Potential

Low

Nid Height

14
       
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.