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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
64
Moderate
Drought index
66
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
50%
of 2 reporting
Median flow
31%
p16 of record
Water assets
229
4 springs · 61 wells
USGS gauges (3)
- PUTAH C NR GUENOC CA114535000 cfsp0 · much below normal
- PUTAH C NR WINTERS CA11454000119 cfsp32 · normal
- POPE C A WALTER SPRINGS CA114535900 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 66 | 0 | 1/2 | p16 |
| 2026-10-20 | 66 | 0 | 1/2 | p17 |
| 2026-10-19 | 66 | 0 | 1/2 | p18 |
| 2026-10-18 | 66 | 0 | 1/2 | p39 |
| 2026-10-17 | 66 | 0 | 1/2 | p40 |
| 2026-10-16 | 66 | 0 | 1/2 | p41 |
| 2026-10-15 | 66 | 0 | 1/2 | p42 |
| 2026-10-14 | 66 | 0 | 1/2 | p40 |
| 2026-10-13 | 66 | 0 | 1/2 | p40 |
| 2026-10-12 | 66 | 0 | 1/2 | p43 |
| 2026-10-11 | 66 | 0 | 1/2 | p44 |
| 2026-10-10 | 66 | 0 | 1/2 | p45 |
| 2026-10-09 | 66 | 0 | 1/2 | p45 |
| 2026-10-08 | 66 | 0 | 1/2 | p44 |
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