Mallories Dairy Lagoon #2 Reservoir Report
Nearby: Mallories Lagoon #1 Norman Stadeli
Last Updated: December 13, 2025
Mallories Dairy Lagoon #2 is a private water resource located in Marion, Oregon, serving primarily for irrigation purposes.
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Summary
Managed by the Oregon Water Resources Department, this earth dam stands at a height of 21.8 feet and has a storage capacity of 84 acre-feet. While the dam has a low hazard potential, it is regularly inspected every six years to ensure its structural integrity and safe operation.
Situated in a rural area with coordinates 45.01555833 latitude and -122.8269806 longitude, Mallories Dairy Lagoon #2 features a slide gate as its outlet control structure. Despite not having a designated completion year or having undergone modifications, the dam is crucial for supporting local agricultural activities through reliable water supply. The dam's condition is currently not rated, but its low hazard potential suggests minimal risks of failure and potential environmental impacts.
As part of the Portland District, Mallories Dairy Lagoon #2 stands as a vital water management infrastructure in the region, contributing to the sustainability of irrigation practices and water resource utilization. With its regulated state permitting and inspection processes, the dam ensures compliance with safety standards and effective emergency response measures. For water resource and climate enthusiasts, Mallories Dairy Lagoon #2 represents a critical piece of the local water infrastructure, supporting agricultural productivity and environmental stewardship in Marion County, Oregon.
Dam Height |
21.8 |
Primary Dam Type |
Earth |
Nid Storage |
84 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
Low |
Nid Height |
22 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Silver Creek At Silverton
|
52cfs |
Abiqua Creek At Silverton
|
74cfs |
Zollner Creek Near Mt Angel
|
320cfs |
Butte Creek At Monitor
|
453cfs |
Pudding River Near Woodburn
|
4380cfs |
Willamette River At Salem
|
35800cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Mallories Dairy Lagoon #2
Silver Creek Reservoir