Mckay Acres Dam Reservoir Report

Last Updated: December 13, 2025

McKay Acres Dam, also known as Art McKay Dam, is a private dam located in Marion County, Oregon along the Champoeg River.


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Summary

Built in 1968, this earth-type dam serves primarily for irrigation purposes with a storage capacity of 510 acre-feet. The dam stands at a height of 15 feet with a hydraulic height of 13 feet and a structural height of 17 feet, encompassing a length of 130 feet. Despite its low hazard potential, the dam has not been rated for its condition assessment.

Owned and regulated by a private entity, McKay Acres Dam falls under the jurisdiction of the Oregon Water Resources Department (OWRD) with permitting, inspection, and enforcement carried out by the state agency. The dam features a slide (sluice gate) outlet for water control and has a maximum discharge capacity of 410 cubic feet per second. Although it has not been modified in recent years, the dam is inspected every 6 years to ensure its continued safety and functionality. With its picturesque location and crucial role in supporting local irrigation needs, McKay Acres Dam serves as a key water resource infrastructure in the Butteville area.

Year Completed

1968

Dam Length

130

Dam Height

15

River Or Stream

CHAMPOEG

Primary Dam Type

Earth

Surface Area

32.4

Hydraulic Height

13

Drainage Area

15.8

Nid Storage

510

Structural Height

17

Outlet Gates

Slide (sluice gate)

Hazard Potential

Low

Nid Height

17
       
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.