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San Francisco HUC8 15040004

A 7,257 km² sub-basin of the Lower Colorado region in AZ, NM. 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
34
Stressed
Drought index
297
Severe
Area in D2+
97.42%
0% exceptional (D4)
Gauges below normal
100%
of 2 reporting
Median flow
31%
p7 of record
Water assets
4,568
48 springs · 424 wells

USGS gauges (4)

Recent conditions

DateDSCID2+ %Gauges lowFlow pct
2026-09-0729797.422/2p7

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