Upper Putah HUC8 18020162
A 1,694 km² sub-basin of the California region in CA. 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
62
Moderate
Drought index
23
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
100%
of 2 reporting
Median flow
48%
p17 of record
Water assets
229
4 springs · 61 wells
USGS gauges (3)
- PUTAH C NR GUENOC CA114535000 cfsp14 · below normal
- PUTAH C NR WINTERS CA11454000393 cfsp20 · below normal
- POPE C A WALTER SPRINGS CA11453590no readingno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 23 | 0 | 2/2 | p17 |
Top water assets
- 67Monticello Damreservoir
- 67Hunting Creekriver
- 67Hunting Creekriver
- 65Pope Creekriver
- 65Putah Creekriver
- 65Bucksnort Creekriver
- 65Putah C Nr Guenoc Cariver
- 65Pope C A Walter Springs Cariver
- 65Putah C Nr Winters Cariver
- 65Putah Creekriver