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Lost HUC8 18010204

A 7,833 km² sub-basin of the California region in CA, OR. Drought coverage is from the US Drought Monitor (map of 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.

Health score
68
Moderate
Drought index
200
Severe
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 3 reporting
Median flow
125%
p56 of record
Water assets
1,792
134 springs · 717 wells

USGS gauges (5)

Recent conditions

DateDSCID2+ %Gauges lowFlow pct
2026-10-2120000/3p56
2026-10-2020001/4p60
2026-10-1920000/4p78
2026-10-1820001/4p78
2026-10-1720001/4p78
2026-10-1620001/4p79
2026-10-1520001/4p74
2026-10-1420000/3p70
2026-10-1320001/4p62
2026-10-1220001/4p66
2026-10-1120000/5p79
2026-10-1020000/4p79
2026-10-0920000/4p68
2026-10-0820001/5p55

Top water assets