Rivers End Dam Reservoir Report

Last Updated: December 12, 2025

Rivers End Dam, also known as Rivers End Ranch Dam, is a privately owned structure located in Lake County, Oregon.


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Summary

Completed in 1997, this earth-type dam serves primarily for irrigation purposes, with additional benefits for fish and wildlife ponds and recreation. Situated on the Chewaucan River, the dam has a height of 23 feet and a storage capacity of 1839 acre-feet, covering a surface area of 650 acres and draining an area of 590 acres.

Despite its low hazard potential, Rivers End Dam is regulated and inspected by the Oregon Water Resources Department, ensuring its safety and compliance with state regulations. The dam has not been rated for its condition assessment, but regular inspections are conducted every six years. The surrounding area, including the city of "NO DOWNSTREAM SETTLEMENT," relies on the dam for water supply and irrigation needs, contributing to the local economy and ecosystem.

With its strategic location and vital role in water resource management, Rivers End Dam stands as a key infrastructure for sustainable agriculture and environmental conservation in the region. As a significant contributor to the Chewaucan River ecosystem, the dam supports a variety of wildlife habitats and recreational activities, making it a valuable asset for both the community and the environment. Through continued monitoring and maintenance, Rivers End Dam remains a crucial component of water resource management and climate resilience efforts in Oregon.

Year Completed

1997

Dam Height

23

River Or Stream

CHEWAUCAN RIVER

Primary Dam Type

Earth

Surface Area

650

Drainage Area

590

Nid Storage

1839

Hazard Potential

Low

Nid Height

23
       
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.