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Upper Guadalupe HUC8 12100201

A 3,711 km² sub-basin of the Texas-Gulf region in TX. 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
74
Moderate
Drought index
90
Abnormally dry
Area in D2+
0.21%
0% exceptional (D4)
Gauges below normal
13%
of 8 reporting
Median flow
86%
p41 of record
Water assets
1,807
259 springs · 637 wells

USGS gauges (9)

Recent conditions

DateDSCID2+ %Gauges lowFlow pct
2026-10-20900.211/8p41
2026-10-19900.211/8p41
2026-10-18900.211/8p38
2026-10-17900.212/8p39
2026-10-16900.211/8p44
2026-10-15900.211/8p42
2026-10-14900.210/8p44
2026-10-13900.210/8p43
2026-10-12900.210/8p47
2026-10-11900.210/8p48
2026-10-10900.210/8p47
2026-10-09900.210/8p49
2026-10-081620.210/8p53
2026-10-071620.210/8p66

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