Upper Klamath HUC8 18010206
A 3,687 km² sub-basin of the California region in CA, OR. 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
231
Severe
Area in D2+
30.65%
0% exceptional (D4)
Gauges below normal
50%
of 4 reporting
Median flow
88%
p26 of record
Water assets
1,595
29 springs · 32 wells
USGS gauges (4)
- KLAMATH R BL IRON GATE DAM CA11516530976 cfsp22 · below normal
- KLAMATH RIVER AT KENO, OR11509500733 cfsp25 · below normal
- KLAMATH RIVER BLW JOHN C.BOYLE PWRPLNT, NR KENO,OR11510700930 cfsp27 · normal
- KLAMATH R NR SEIAD VALLEY CA115205001,180 cfsp30 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 231 | 30.65 | 2/4 | p26 |
Top water assets
- 76Spring Creek — Aquaculturespring
- 76Spring Creek — Aquaculturespring
- 76Spring Creek — Aquaculturespring
- 69Grider Creekriver
- 69Kuntz Creekriver
- 69Cow Creekriver
- 69Grider Creekriver
- 69Little Red Mountain Creekriver
- 69West Branch Long John Creekriver
- 69Shovel Creekriver