Necanicum HUC8 17100201
A 820 km² sub-basin of the Pacific Northwest 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
73
Moderate
Drought index
0
None
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
—
no gauges reporting
Median flow
—
of normal for the date
Water assets
41
9 springs · 25 wells
USGS gauges (0)
No active discharge gauges in this sub-basin.
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 0 | 0 | — | — |
Top water assets
- 66Seaside Cityreservoir
- 66Necanicum River — Fish Culturespring
- 66Elk Creek — Domesticspring
- 62Waterfall Creek — Domesticspring
- 62Cullaby Lake — Irrigationspring
- 62Unnamed Spring — Group Domesticspring
- 62Unnamed Spring — Group Domesticspring
- 54Unnamed Stream — Use Within A Schoolspring
- 54Beerman Creek — Domestic Expandedspring
- 54Unnamed Stream — Domestic Expandedspring