Delaubenfels Reservoir Report
Nearby: P.M. Delaubenfelds Dam North Fork
Last Updated: December 13, 2025
Delaubenfels is a privately owned earth dam located in Benton, Oregon, with a primary purpose of irrigation.
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Summary
Completed in 1970, the dam stands at a height of 31 feet and has a capacity to store 84 acre-feet of water. It spans 400 feet in length and covers a surface area of 5 acres, serving a drainage area of 0.75 square miles. The dam's maximum discharge capacity is recorded at 258 cubic feet per second, with a spillway type and width not specified.
Managed by the Oregon Water Resources Department, Delaubenfels is subject to state regulations, permitting, inspections, and enforcement activities. The dam is categorized as having a low hazard potential, with a condition assessment that is currently not rated. The last inspection was conducted in May 2017, with a frequency of inspections set at every 6 years. Emergency action plans and inundation maps for the dam have not been prepared or updated, leaving room for potential risk assessment and management measures to be put in place.
Despite its unassessed condition, Delaubenfels remains a vital structure for irrigation purposes in the region. Situated within the Portland District and under state jurisdiction, the dam plays a crucial role in water resource management and agricultural activities in the area. As water resource and climate enthusiasts, there is an opportunity to further explore the environmental impact and resilience of Delaubenfels in the face of evolving climate conditions and regulatory requirements.
Year Completed |
1970 |
Dam Length |
400 |
Dam Height |
31 |
Primary Dam Type |
Earth |
Surface Area |
5 |
Hydraulic Height |
29 |
Drainage Area |
0.75 |
Nid Storage |
84 |
Structural Height |
33 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
Low |
Nid Height |
33 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Marys River Near Philomath
|
1060cfs |
Long Tom River At Monroe
|
288cfs |
Willamette River At Corvallis
|
14500cfs |
Willamette River At Harrisburg
|
8680cfs |
Willamette River At Albany
|
13800cfs |
East Fork Lobster Creek Near Alsea
|
37cfs |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Philomath Frolic and Rodeo Grounds
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Benton Oaks RV
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Alsea Falls Recreation Site
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Alsea Falls
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Marys Peak Campground
|
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Marys Peak
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Delaubenfels
Peoria Park