Dundee Sewer Project (Lagoon) Reservoir Report

Last Updated: December 14, 2025

The Dundee Sewer Project (Lagoon) in Oregon is a vital water resource management system owned by the local government.


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Summary

Completed in 1979, this Earth dam structure serves as a key component for managing municipal waste in Yamhill County. With a dam height of 37 feet and a storage capacity of 65 acre-feet, the lagoon plays a crucial role in maintaining water quality and preventing environmental hazards in the region.

Situated in the city of Dundee, this lagoon project is regulated by the Oregon Water Resources Department and undergoes regular inspections to ensure its functionality and safety. With a low hazard potential and a history of meeting regulatory guidelines, the Dundee Sewer Project provides a sustainable solution for wastewater management in the area. Equipped with slide gates for outlet control, the lagoon effectively stores and treats wastewater, contributing to the overall health of the local water ecosystem.

As a testament to its importance in the community, the Dundee Sewer Project continues to be a reliable infrastructure for water resource management in Oregon. With a focus on environmental protection and public health, this lagoon project serves as a model for sustainable water management practices in the region.

Year Completed

1979

Dam Length

4400

Dam Height

37

River Or Stream

MUNICIPAL WASTE

Primary Dam Type

Earth

Surface Area

9.5

Hydraulic Height

34

Nid Storage

65

Structural Height

37

Outlet Gates

Slide (sluice gate)

Hazard Potential

Low

Nid Height

37
       
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.