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Upper Rio Grande HUC8 13020101

A 8,429 km² sub-basin of the Rio Grande region in CO, 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
29
Critical
Drought index
420
Exceptional
Area in D2+
100%
20.3% exceptional (D4)
Gauges below normal
95%
of 22 reporting
Median flow
30%
p6 of record
Water assets
4,578
156 springs · 1,294 wells

USGS gauges (26)

Recent conditions

DateDSCID2+ %Gauges lowFlow pct
2026-09-0742010021/22p6

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