River Bend No. 2 Reservoir Report

Last Updated: December 13, 2025

River Bend No.


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Summary

2, also known as Payne #2, is a private irrigation dam located in Marion County, Oregon. Completed in 1967, this earth dam stands at 30 feet tall and spans a length of 270 feet, with a storage capacity of 50 acre-feet. Situated on the Willamette River, this structure plays a vital role in providing water for agricultural purposes in the region.

Managed by the Oregon Water Resources Department, River Bend No. 2 has a low hazard potential and has not been rated for its condition assessment. The dam features needle outlet gates and has a maximum discharge capacity of 268 cubic feet per second. While the last inspection took place in May 2016, with an inspection frequency of every 6 years, the emergency action plan status and risk assessment details are currently unavailable, pointing to potential areas for further evaluation and improvement.

Enthusiasts of water resources and climate will find River Bend No. 2 to be a fascinating case study in private irrigation infrastructure. With its strategic location on a tributary to the Willamette River, this dam serves as a crucial resource for water storage and distribution in the area. As efforts continue to monitor and maintain the structure, there remains a clear need for ongoing assessment and preparation to ensure its long-term safety and effectiveness in supporting agricultural activities in Marion County, Oregon.

Year Completed

1967

Dam Length

270

Dam Height

30

River Or Stream

WILLAMETTE RIVER, TRIB TO

Primary Dam Type

Earth

Surface Area

5.5

Hydraulic Height

28

Drainage Area

1.21

Nid Storage

50

Structural Height

30

Outlet Gates

Needle

Hazard Potential

Low

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.