Dejong Reservoir Report
Nearby: Dejong Dam Crowe Reservoir #2 (Polk)
Last Updated: December 13, 2025
Dejong, The Reservoir, located in Polk County, Oregon, is a private irrigation reservoir completed in 1961 for the primary purpose of irrigation.
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Summary
With a dam height of 35 feet and a storage capacity of 72 acre-feet, this earth dam structure on Salt Creek serves the agricultural community in the area. The reservoir covers a surface area of 4 acres and has a maximum discharge rate of 25 cubic feet per second.
Owned privately and regulated by the Oregon Water Resources Department, Dejong, The Reservoir has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. The outlet gates for the reservoir are operated using a slide (sluice gate) system, providing controlled water release. Despite being last inspected in 1996, the reservoir remains in operation for irrigation purposes, serving as a crucial water resource in the region.
With its serene location in Amity, Oregon, Dejong, The Reservoir is a vital water management infrastructure in the area. As climate change continues to impact water resources, the maintenance and upkeep of this reservoir will be essential in ensuring a sustainable water supply for agricultural activities in the region. As water resource and climate enthusiasts, understanding the importance of structures like Dejong, The Reservoir in managing water scarcity and irrigation needs is crucial for sustainable water management practices in the face of changing environmental conditions.
Year Completed |
1961 |
Dam Length |
500 |
Dam Height |
35 |
River Or Stream |
SALT CREEK, TRIB TO |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
33 |
Drainage Area |
0.12 |
Nid Storage |
72 |
Structural Height |
39 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
Low |
Nid Height |
39 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
South Yamhill River At Mcminnville
|
8310cfs |
Willamette River At Salem
|
35800cfs |
Luckiamute River Near Suver
|
3790cfs |
Tucca Creek Near Blaine
|
123cfs |
Willamette River At Newberg
|
52600cfs |
Zollner Creek Near Mt Angel
|
320cfs |
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.
Dejong, The Reservoir