Silver Falls Log Pond (Marion) Reservoir Report
Last Updated: December 13, 2025
Silver Falls Log Pond, also known as Webb Lake, is a privately owned water resource located in Marion County, Oregon.
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Summary
This dam was completed in 1956 with a primary purpose of irrigation, serving as a vital water source for agricultural activities in the area. The earth dam stands at a height of 14 feet and has a storage capacity of 68 acre-feet, covering a surface area of 11.4 acres.
Situated on Abiqua Creek, a tributary to the Willamette River, this dam plays a crucial role in water management and distribution for the surrounding region. With a low hazard potential and a slide gate for outlet control, the Silver Falls Log Pond is inspected every 6 years to ensure its structural integrity and operational efficiency. Despite its condition being currently ungraded, the dam continues to support the local ecosystem and economy through its irrigation functions.
Owned by a private entity, this water infrastructure is regulated and permitted by the Oregon Water Resources Department (OWRD), showcasing the collaborative efforts between state agencies and private stakeholders in managing water resources effectively. With its picturesque location and historical significance, the Silver Falls Log Pond stands as a testament to the importance of sustainable water management practices in the face of changing climate conditions and increasing water demands.
Year Completed |
1956 |
Dam Length |
610 |
Dam Height |
14 |
River Or Stream |
ABIQUA CREEK, TRIB TO |
Primary Dam Type |
Earth |
Surface Area |
11.4 |
Hydraulic Height |
12 |
Nid Storage |
68 |
Structural Height |
14 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
Low |
Nid Height |
14 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Abiqua Creek At Silverton
|
74cfs |
Silver Creek At Silverton
|
52cfs |
Butte Creek At Monitor
|
453cfs |
Zollner Creek Near Mt Angel
|
320cfs |
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.
Silver Falls Log Pond (Marion)