Jones Reservoir Reservoir Report
Last Updated: December 13, 2025
Jones Reservoir, located in Harney County, Oregon, is a private water resource managed for irrigation purposes.
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Summary
Constructed in 1958, this earth dam stands at 21 feet high and has a storage capacity of 160 acre-feet, with a normal storage level of 127 acre-feet. The reservoir covers a surface area of 22 acres and is fed by Duck Creek, a tributary of Wolf Creek.
With a low hazard potential and a condition assessment that is currently not rated, Jones Reservoir serves as a vital water source for agricultural activities in the region. The dam features a slide gate outlet for water release and has a maximum discharge capacity of 652 cubic feet per second. Despite its importance, the last inspection of the reservoir was conducted in May 2012, with an inspection frequency of every 6 years.
Overall, Jones Reservoir is a significant water management structure in Oregon, providing essential irrigation water for the surrounding area. As climate change continues to impact water resources, monitoring and maintenance of this reservoir will be crucial to ensure its continued functionality and resilience in the face of evolving environmental challenges.
Year Completed |
1958 |
Dam Length |
746 |
Dam Height |
21 |
River Or Stream |
DUCK CREEK/TRIB WOLF CREEK |
Primary Dam Type |
Earth |
Surface Area |
22 |
Hydraulic Height |
16 |
Drainage Area |
1 |
Nid Storage |
160 |
Structural Height |
21 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
Low |
Nid Height |
21 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Jones Reservoir
Middle Fork Malheur (Including Bluebucket Creek)