Upriver Dam Forebay Reservoir Report
Nearby: Upriver Dam Upper Falls Control Works
Last Updated: December 14, 2025
Upriver Dam Forebay is a vital infrastructure located in Spokane, Washington, along the beautiful Spokane River.
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Summary
Owned by the local government, this dam serves multiple purposes, including hydroelectric power generation and recreation. Built in 1987, the dam stands at a height of 30 feet and has a storage capacity of 3,000 acre-feet, contributing to the overall water resource management in the region.
Managed by the Federal Energy Regulatory Commission, Upriver Dam Forebay plays a crucial role in ensuring the safety and stability of the surrounding area. With a significant hazard potential and a high-risk assessment rating, the dam is closely monitored and inspected regularly to mitigate any potential risks. While the condition assessment of the dam is currently marked as "Not Available," emergency action plans and risk management measures are in place to address any unforeseen events.
Despite its age, Upriver Dam Forebay continues to be a key asset in the water infrastructure of Spokane, providing a reliable source of hydroelectric power and recreational opportunities for the local community. Its presence highlights the importance of sustainable water resource management and climate resilience in the face of changing environmental conditions.
Year Completed |
1987 |
Dam Length |
375 |
Dam Height |
30 |
River Or Stream |
Spokane River |
Primary Dam Type |
Earth |
Surface Area |
50 |
Hydraulic Height |
21 |
Drainage Area |
4057 |
Nid Storage |
3000 |
Structural Height |
30 |
Hazard Potential |
Significant |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Spokane River At Spokane
|
17500cfs |
Hangman Creek At Spokane
|
98cfs |
Little Spokane River At Dartford
|
222cfs |
Little Spokane River Near Dartford
|
527cfs |
Spokane River Below Nine Mile Dam At Spokane
|
17300cfs |
Spokane River Nr Post Falls Id
|
19800cfs |
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.
Upriver Dam Forebay