Yamhill HUC8 17090008
A 1,999 km² sub-basin of the Pacific Northwest region in OR. 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
43
Stressed
Drought index
129
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
27%
p9 of record
Water assets
466
58 springs · 219 wells
USGS gauges (1)
- SOUTH YAMHILL RIVER AT MCMINNVILLE, OR1419415033 cfsp9 · much below normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-19 | 129 | 0 | 1/1 | p9 |
| 2026-10-18 | 129 | 0 | 1/1 | p9 |
| 2026-10-17 | 129 | 0 | 1/1 | p8 |
| 2026-10-16 | 129 | 0 | 1/1 | p7 |
| 2026-10-15 | 129 | 0 | 1/1 | p9 |
| 2026-10-14 | 129 | 0 | 1/1 | p10 |
| 2026-10-13 | 129 | 0 | 1/1 | p15 |
| 2026-10-12 | 129 | 0 | 1/1 | p13 |
| 2026-10-11 | 129 | 0 | 1/1 | p16 |
| 2026-10-10 | 129 | 0 | 1/1 | p16 |
| 2026-10-09 | 129 | 0 | 1/1 | p22 |
| 2026-10-08 | 129 | 0 | 1/1 | p23 |
| 2026-10-07 | 129 | 0 | 1/1 | p22 |
| 2026-10-06 | 129 | 0 | 0/1 | p27 |
Top water assets
- 73A Spring — Domesticspring
- 73A Well — Nursery Useswell
- 73A Well — Nursery Useswell
- 73Baker Creek — Supplemental Irrigationspring
- 73Berry Creek — Supplemental Irrigationspring
- 73A Reservoir — Irrigationspring
- 66A Well — Irrigationwell
- 66A Well — Irrigationwell
- 66Marx Brothers Reservoirreservoir
- 66Well 1 — Irrigationwell