Spada Farms #2 (Ryan) Reservoir Report
Last Updated: December 13, 2025
Spada Farms #2, also known as Ryan Creek Dam, is a privately owned structure located in Marion County, Oregon.
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Summary
The dam is primarily used for irrigation purposes and is regulated by the Oregon Water Resources Department. With a height of 26 feet and a storage capacity of 138.7 acre-feet, the dam plays a crucial role in managing water resources in the area.
Although the dam's hazard potential is classified as low, it is subject to regular inspections, with the last one conducted in April 2019. The inspection frequency is set at 6 years, and the structure's condition is currently labeled as "Not Rated." The outlet gates feature a slide mechanism, indicating the sophistication of the dam's design for water control and management.
While Spada Farms #2 may not be the largest or most high-risk dam in the region, its contribution to irrigation and water storage cannot be overlooked. As climate change continues to impact water resources, structures like Ryan Creek Dam become increasingly important for sustainable water management practices in the region.
Dam Height |
26 |
Nid Storage |
138.7 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
Low |
Nid Height |
26 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pudding River Near Woodburn
|
4380cfs |
Pudding River At Aurora
|
5980cfs |
Willamette River At Newberg
|
52600cfs |
Zollner Creek Near Mt Angel
|
320cfs |
Molalla River Near Canby
|
3060cfs |
Butte Creek At Monitor
|
453cfs |
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.
Spada Farms #2 (Ryan)
Wilsonville Memorial Park