Williamson HUC8 18010201
A 3,726 km² sub-basin of the California region in 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
52
Moderate
Drought index
318
Extreme
Area in D2+
86.16%
0% exceptional (D4)
Gauges below normal
50%
of 2 reporting
Median flow
110%
p42 of record
Water assets
328
73 springs · 111 wells
USGS gauges (7)
- WILLIAMSON RIVER NEAR KLAMATH AGENCY, OR114935000 cfsp10 · below normal
- WILLIAMSON RIVER BLW SPRAGUE RIVER NR CHILOQUIN,OR11502500558 cfsp75 · normal
- IRVING CREEK NEAR LENZ, OR114914501 cfsno long-term record
- JACKSON CREEK NEAR LENZ, OR114914702 cfsno long-term record
- MILLER CREEK NEAR BEAVER MARSH, OR114919504 cfsno long-term record
- SAND CREEK BLW SAND CREEK CANAL NR CHINCHALO, OR1149255011 cfsno long-term record
- SCOTT CREEK BLW SAND CREEK CANAL NR CHINCHALO, OR114931002 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 318 | 86.16 | 1/2 | p42 |
Top water assets
- 76A Well — Irrigationwell
- 76Jack Creek — Irrigationspring
- 76Jack Creek — Irrigationspring
- 76Jack Creek — Irrigationspring
- 76Jack Creek — Irrigationspring
- 73Sprague River — Irrigationspring
- 73A Well — Irrigation And Domesticwell
- 73A Well — Irrigationwell
- 69Sink Creekriver
- 69Jack Creekriver