Clackamas HUC8 17090011
A 2,442 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
44
Stressed
Drought index
233
Severe
Area in D2+
35.52%
0% exceptional (D4)
Gauges below normal
83%
of 6 reporting
Median flow
69%
p13 of record
Water assets
492
27 springs · 264 wells
USGS gauges (10)
- CLACKAMAS RIVER AT ESTACADA, OR14210000619 cfsp9 · much below normal
- CLACKAMAS RIVER NEAR OREGON CITY, OR14211010675 cfsp9 · much below normal
- CLACKAMAS RIVER ABOVE THREE LYNX CREEK, OR14209500598 cfsp10 · much below normal
- OAK GROVE FORK ABOVE POWERPLANT INTAKE, OR.14209000283 cfsp17 · below normal
- OAK GROVE FORK NEAR GOVERNMENT CAMP, OR1420870086 cfsp20 · below normal
- OAK GROVE FORK AT RIPPLEBROOK CAMPGROUND, OR14209250103 cfsp61 · normal
- CLACKAMAS RIVER AT BIG BOTTOM, OR14208000212 cfsno long-term record
- COLLAWASH R NR BREITENBUSH, OR1420830057 cfsno long-term record
- FISH CREEK NEAR THREE LYNX, OR142097009 cfsno long-term record
- CLEAR CREEK AT CARVER, OR1421075015 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-19 | 233 | 35.52 | 5/6 | p13 |
| 2026-10-18 | 233 | 35.52 | 5/6 | p14 |
| 2026-10-17 | 233 | 35.52 | 5/6 | p15 |
| 2026-10-16 | 233 | 35.52 | 5/6 | p14 |
| 2026-10-15 | 233 | 35.52 | 5/6 | p15 |
| 2026-10-14 | 233 | 35.52 | 5/6 | p14 |
| 2026-10-13 | 233 | 35.52 | 4/6 | p16 |
| 2026-10-12 | 233 | 35.52 | 5/6 | p16 |
| 2026-10-11 | 233 | 35.52 | 5/6 | p17 |
| 2026-10-10 | 233 | 35.52 | 3/6 | p18 |
| 2026-10-09 | 233 | 35.52 | 3/6 | p18 |
| 2026-10-08 | 233 | 35.52 | 5/6 | p16 |
| 2026-10-07 | 233 | 35.52 | 5/6 | p16 |
| 2026-10-06 | 233 | 35.52 | 5/6 | p16 |
Top water assets
- 76Eagle Creek — Power Developmentspring
- 76A Well — Nursery Useswell
- 76A Well — Nursery Useswell
- 76A Well — Nursery Useswell
- 73A Well — Irrigation And Domesticwell
- 67Clackamas River At Big Bottom, Orriver
- 67Gingham Creekriver
- 67Clackamas Riverriver
- 67Oak Grove Fork Near Government Camp, Orriver
- 67Oak Grove Fork Above Powerplant Intake, Or.river