Stanley Reservoir Report

Last Updated: December 5, 2025

Stanley, Charles W.


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Summary

Reservoir is a privately owned water resource located in Oregon, specifically in Jackson County near Brownsboro. Built in 1962, this reservoir serves primarily for irrigation purposes, with a storage capacity of 380 acre-feet and a surface area of 21.2 acres. The dam itself stands at 41 feet high and spans 925 feet in length, providing vital water storage and management for the surrounding area.

Managed by the Oregon Water Resources Department, Stanley, Charles W. Reservoir is regulated and inspected regularly to ensure its safety and functionality. Despite its low hazard potential, the reservoir plays a crucial role in supporting agriculture and maintaining water resources in the region. With a maximum discharge of 250 cubic feet per second, this reservoir is a key component in the water supply infrastructure of the area, contributing to the sustainability of Little Butte Creek and its tributaries.

Although its condition assessment is currently marked as "Not Rated," Stanley, Charles W. Reservoir remains a vital asset for water resource management in southern Oregon. With its controlled release capabilities and capacity for irrigation purposes, this reservoir stands as a testament to the importance of sustainable water infrastructure in the face of changing climate patterns and increasing water demands.

Year Completed

1962

Dam Length

925

Dam Height

41

River Or Stream

LITTLE BUTTE CREEK, TRIB TO

Primary Dam Type

Earth

Surface Area

21.2

Hydraulic Height

39

Drainage Area

0.53

Nid Storage

380

Structural Height

45

Hazard Potential

Low

Nid Height

45
       
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.