COLUMBIA − ROCKY REACH DAM
(
RRHW1
)
State:
Washington
County:
Chelan
Latitude:
47 31' 27" North
Longitude:
120 18' 3" West
Elevation:
703 ft
Supporting NWS Forecast Office:
WFO Spokane
Click for NWS Official River Forecasts for RRHW1
Daily Historical Statistics for March 18, 2026
Mean Flow:
96100 cfs
Max Flow:
202000 cfs (1983)
Min Flow:
41900 cfs (2001)
Statistics based on water years:
1961-2024
* statistics estimated based on current rating
The 4-10 Day Trend Forecast is based on model guidance and uncertainty during this period is greater.
Data Used In Plot
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Data Used In Plot
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Data Used In Plot
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Data Used In Plot
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RRHW1
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