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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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.

Health score
70
Moderate
Drought index
145
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 1 reporting
Median flow
316%
p86 of record
Water assets
4,568
48 springs · 424 wells

USGS gauges (4)

Recent conditions

DateDSCID2+ %Gauges lowFlow pct
2026-10-2114500/1p86
2026-10-2014500/1p57
2026-10-1914500/1p53
2026-10-1814500/1p55
2026-10-1714500/1p57
2026-10-1614500/1p74
2026-10-151450——
2026-10-1414500/1p90
2026-10-1314500/1p90
2026-10-1214500/1p87
2026-10-1114500/1p88
2026-10-1014500/1p88
2026-10-0914500/1p90
2026-10-0822121.130/1p92

Top water assets