Upper Columbia-Priest Rapids HUC8 17020016
A 5,414 km² sub-basin of the Pacific Northwest region in WA. 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
36
Stressed
Drought index
200
Severe
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
50%
p8 of record
Water assets
3,393
227 springs · 3,032 wells
USGS gauges (2)
- COLUMBIA RIVER BELOW PRIEST RAPIDS DAM, WA1247280037,400 cfsp8 · much below normal
- ESQUATZEL COULEE AT CONNELL, WA1251300015 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-19 | 200 | 0 | 1/1 | p8 |
| 2026-10-18 | 200 | 0 | 1/1 | p7 |
| 2026-10-17 | 200 | 0 | 1/1 | p7 |
| 2026-10-16 | 200 | 0 | 1/1 | p8 |
| 2026-10-15 | 200 | 0 | 0/1 | p29 |
| 2026-10-14 | 200 | 0 | 1/1 | p11 |
| 2026-10-13 | 200 | 0 | 0/1 | p53 |
| 2026-10-12 | 200 | 0 | 0/1 | p37 |
| 2026-10-11 | 200 | 0 | 0/1 | p29 |
| 2026-10-10 | 200 | 0 | 1/1 | p20 |
| 2026-10-09 | 200 | 0 | 0/1 | p76 |
| 2026-10-08 | 200 | 0 | 0/1 | p80 |
| 2026-10-07 | 200 | 0 | 0/1 | p78 |
| 2026-10-06 | 200 | 0 | 0/1 | p44 |
Top water assets
- 78St — Cl S4-085946Clspring
- 76Ci — Cl S4-301963Clspring
- 76St — Cl S4-085997Clspring
- 76Fp Ir — Ce S3-*21932Cwrisspring
- 76St — Cl S4-085942Clspring
- 76Ir — Ce Swc03586spring
- 76Ir — Cl S4-159116Clspring
- 76St — Cl S4-085941Clspring
- 76Fp — Ap S3-29154Aspring
- 76Fp Hp Ir St — Cl Wrc300564spring