Bailey Reservoir (Aka Kalsch) Reservoir Report
Nearby: Hillsboro West (Lagoon) Burkhalter #2
Last Updated: December 13, 2025
Bailey Reservoir, also known as Kalsch, is a privately owned dam located in Farmington, Oregon, along the Tualatin River.
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Summary
Built in 1968, this earth dam stands at 12 feet high and has a storage capacity of 50 acre-feet, primarily used for irrigation purposes. The reservoir covers an area of 11.9 acres and has a drainage area of 2.58 square miles, with a maximum discharge capacity of 248 cubic feet per second.
Despite its low hazard potential and not currently being rated for its condition assessment, Bailey Reservoir plays a crucial role in the local water resource management. The dam is regulated by the Oregon Water Resources Department, with inspections conducted every 6 years to ensure its structural integrity and safety. The reservoir's location in Washington County, Oregon, makes it a vital component in the irrigation system that supports agricultural activities in the region.
For water resource and climate enthusiasts, Bailey Reservoir serves as a fascinating example of how private dams contribute to the sustainable utilization of water for agricultural purposes. With its modest size and low hazard potential, the reservoir showcases the importance of proper regulation and inspection to ensure the safety and efficiency of water storage infrastructure. As part of the Tualatin River watershed, Bailey Reservoir plays a crucial role in supporting local irrigation needs and demonstrates the collaborative efforts required to manage water resources effectively in the face of changing climate conditions.
Year Completed |
1968 |
Dam Length |
230 |
Dam Height |
12 |
River Or Stream |
TUALITIN RIVER, TRIB TO |
Primary Dam Type |
Earth |
Surface Area |
11.9 |
Hydraulic Height |
10 |
Drainage Area |
2.58 |
Nid Storage |
50 |
Structural Height |
12 |
Hazard Potential |
Low |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Tualatin River Near Dilley
|
1130cfs |
Fanno Creek At 56th Ave
|
3cfs |
Fanno Creek At Durham
|
36cfs |
East Fork Dairy Creek Near Meacham Corner
|
21cfs |
Willamette River At Newberg
|
52600cfs |
Columbia Slough At Portland
|
5cfs |
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.
Bailey Reservoir (Aka Kalsch)