Gildersleeve Reservoir Report
Last Updated: December 13, 2025
Gildersleeve, located in Oregon, is a private water resource structure regulated by the state agency OWRD for its irrigation purposes.
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Summary
With a height of 18 feet and a storage capacity of 50 acre-feet, Gildersleeve serves various functions including fire protection, stock, fish and wildlife pond, and irrigation. The dam features a needle outlet gate and is classified as having low hazard potential.
Although the dam's condition assessment is listed as "Not Rated," Gildersleeve undergoes inspections every 6 years, with the last inspection conducted in March 2016. The structure has not been modified over the years and does not pose significant risks according to current data. Despite its relatively small size and low hazard potential, Gildersleeve plays a crucial role in supporting local water resource management and irrigation needs in the region.
Dam Height |
18 |
Nid Storage |
50 |
Outlet Gates |
Needle |
Hazard Potential |
Low |
Nid Height |
18 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Tualatin River Near Dilley
|
1130cfs |
Willamette River At Newberg
|
52600cfs |
South Yamhill River At Mcminnville
|
8310cfs |
Fanno Creek At Durham
|
36cfs |
Fanno Creek At 56th Ave
|
3cfs |
East Fork Dairy Creek Near Meacham Corner
|
21cfs |
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.
Gildersleeve