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 2026-09-01); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
36
Stressed
Drought index
203
Severe
Area in D2+
3.16%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
51%
p8 of record
Water assets
3,393
227 springs · 3,032 wells
USGS gauges (2)
- COLUMBIA RIVER BELOW PRIEST RAPIDS DAM, WA1247280037,800 cfsp8 · much below normal
- ESQUATZEL COULEE AT CONNELL, WA1251300015 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 203 | 3.16 | 1/1 | p8 |
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