Wilson Reservoir No. 1 Reservoir Report
Nearby: Bibby Dam Buether Lower Reservoir
Last Updated: December 13, 2025
Wilson Reservoir No.
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Summary
1, located in Sherman County, Oregon, is a private water storage facility primarily used for irrigation purposes. Constructed in 1957 by the Natural Resources Conservation Service, this earth dam stands at a height of 32 feet and has a storage capacity of 100 acre-feet. With a normal storage level of 68 acre-feet and a surface area of 14.3 acres, the reservoir plays a vital role in supporting agricultural activities in the region.
Situated on the Bronx Canyon River, Wilson Reservoir No. 1 serves as a reliable water source for the surrounding area, with a maximum discharge capacity of 371 cubic feet per second. The dam has a low hazard potential and is maintained by the Oregon Water Resources Department, ensuring that it meets regulatory standards for inspection, enforcement, and permitting. Despite being constructed over six decades ago, the reservoir's condition remains not rated, indicating the need for continued monitoring and assessment to ensure its long-term safety and functionality.
With its strategic location and contribution to water resource management in the region, Wilson Reservoir No. 1 is an essential asset for sustainable agriculture in Sherman County, Oregon. As climate change impacts become more pronounced, the importance of reservoirs like Wilson No. 1 in ensuring water availability for irrigation and other uses will only grow, underscoring the need for ongoing maintenance and risk management measures to safeguard this critical infrastructure for future generations.
Year Completed |
1957 |
Dam Length |
450 |
Dam Height |
32 |
River Or Stream |
BRONX CANYON |
Primary Dam Type |
Earth |
Surface Area |
14.3 |
Hydraulic Height |
30 |
Drainage Area |
1.52 |
Nid Storage |
100 |
Structural Height |
34.5 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
Low |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pine Creek Near Clarno
|
8cfs |
Warm Springs River Near Kahneeta Hot Springs
|
360cfs |
Deschutes River At Moody
|
5500cfs |
John Day River At Mcdonald Ferry
|
1710cfs |
Columbia River At The Dalles
|
120000cfs |
Beaver Creek
|
36cfs |
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.
J73.25R
J73.65R
J71.79L
J71.80R
J72.00R
J75.60R
Wilson Reservoir No. 1