Summary
Completed in 1980, this earth dam stands at a height of 35 feet and has a storage capacity of 200 acre-feet, with a normal storage level of 160 acre-feet. The reservoir covers a surface area of 10.3 acres and is fed by the East Fork Sickfoot Creek.
With a low hazard potential and a condition assessment that has not been rated, Promise Reservoir is regulated by the Oregon Water Resources Department and undergoes regular inspections. The dam features a needle outlet gate and has a maximum discharge capacity of 77 cubic feet per second. While it has not been modified in recent years, it remains an important resource for the local irrigation needs in the area. Climate enthusiasts and water resource aficionados will find Promise Reservoir to be an intriguing site to explore the intersection of infrastructure, water management, and environmental stewardship in the region.
Year Completed |
1980 |
Dam Length |
715 |
Dam Height |
35 |
River Or Stream |
EAST FORK SICKFOOT CREEK |
Primary Dam Type |
Earth |
Surface Area |
10.3 |
Hydraulic Height |
32 |
Drainage Area |
1.4 |
Nid Storage |
200 |
Structural Height |
37 |
Outlet Gates |
Needle |
Hazard Potential |
Low |
Nid Height |
37 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Grande Ronde River At Troy
|
3000cfs |
Minam River Near Minam
|
340cfs |
Mill Creek Near Walla Walla
|
102cfs |
Snake River Bl Mcduff Rapids At China Gardens
|
20100cfs |
Snake River Near Anatone
|
21300cfs |
Asotin Creek Below Confluence Near Asotin
|
54cfs |
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.
Promise Reservoir
Wildcat Creek