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Rio Sonoyta HUC8 15080102

A 12,384 km² sub-basin of the Lower Colorado region in AZ, MX. 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
63
Moderate
Drought index
287
Severe
Area in D2+
86.92%
0% exceptional (D4)
Gauges below normal
0%
of 1 reporting
Median flow
100%
p25 of record
Water assets
105
10 springs · 33 wells

USGS gauges (1)

Recent conditions

DateDSCID2+ %Gauges lowFlow pct
2026-10-2128786.920/1p25
2026-10-2028786.920/1p25
2026-10-1928786.920/1p25
2026-10-1828786.920/1p50
2026-10-1728786.920/1p50
2026-10-1628786.920/1p50
2026-10-1529494.210/1p50
2026-10-1429494.210/1p50
2026-10-1329494.210/1p50
2026-10-1229494.210/1p50
2026-10-1129494.210/1p50
2026-10-1029494.210/1p50
2026-10-0929494.210/1p50
2026-10-0829494.210/1p50

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