Scoggins Reservoir Report
Nearby: Graham Ritchey Farm Reservoir
Last Updated: December 13, 2025
Scoggins is a fascinating water resource in Forest Grove, Oregon, managed by the Bureau of Reclamation for irrigation purposes.
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Summary
The dam, completed in 1974, stands at an impressive 151 feet in height and holds a storage capacity of 62,540 acre-feet. This earth dam, located on Scoggins Creek, is crucial for providing water supply to the region and covers a surface area of 1,157 acres.
With a high hazard potential and very high risk assessment, Scoggins Dam has undergone modifications in 2004 to enhance its mechanical and seismic resilience. The controlled spillway, with a width of 38 feet, plays a crucial role in managing water discharge during high-flow events. Despite its critical importance, the condition assessment of the dam is currently not available, highlighting the need for ongoing monitoring and maintenance to ensure its structural integrity and safety.
Managed by the Bureau of Reclamation, Scoggins Dam is a vital infrastructure for water management in the region, serving both irrigation and water supply purposes. With its rich history dating back to the 1970s, this dam continues to play a significant role in supporting agricultural activities and water needs in the area. As a key player in the water resource management landscape, Scoggins Dam's resilience and operational efficiency are essential for safeguarding the surrounding communities and ecosystems against potential hazards and risks.
Years Modified |
2004 - Mechanical, 2004 - Seismic |
Year Completed |
1974 |
Dam Length |
2700 |
Dam Height |
151 |
River Or Stream |
SCOGGINS CREEK |
Primary Dam Type |
Earth |
Surface Area |
1157 |
Hydraulic Height |
111 |
Drainage Area |
41 |
Nid Storage |
62540 |
Structural Height |
151 |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
151 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Tualatin River Near Dilley
|
1130cfs |
East Fork Dairy Creek Near Meacham Corner
|
21cfs |
Willamette River At Newberg
|
52600cfs |
South Yamhill River At Mcminnville
|
8310cfs |
Tucca Creek Near Blaine
|
123cfs |
Fanno Creek At Durham
|
36cfs |
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.
Scoggins
Tualatin River