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Upper Cowlitz HUC8 17080004

A 2,655 km² sub-basin of the Pacific Northwest region in WA. Drought coverage is from the US Drought Monitor (map of 2026-09-01); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.

Health score
56
Moderate
Drought index
106
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
100%
of 3 reporting
Median flow
73%
p10 of record
Water assets
1,086
22 springs · 61 wells

USGS gauges (3)

Recent conditions

DateDSCID2+ %Gauges lowFlow pct
2026-09-0710603/3p10

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