Mad-Redwood HUC8 18010102
A 3,684 km² sub-basin of the California region in CA. 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
63
Moderate
Drought index
100
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
80%
of 5 reporting
Median flow
48%
p12 of record
Water assets
1,555
2 springs · 74 wells
USGS gauges (5)
- REDWOOD C A ORICK CA114825005 cfsp6 · much below normal
- MAD R AB RUTH RES NR FOREST GLEN CA114803900 cfsp10 · below normal
- REDWOOD C NR BLUE LAKE CA114815003 cfsp12 · below normal
- LITTLE R NR TRINIDAD CA114812004 cfsp12 · below normal
- MAD R NR ARCATA CA1148100048 cfsp28 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-19 | 100 | 0 | 4/5 | p12 |
| 2026-10-18 | 100 | 0 | 4/5 | p10 |
| 2026-10-17 | 100 | 0 | 4/5 | p10 |
| 2026-10-16 | 100 | 0 | 4/5 | p13 |
| 2026-10-15 | 100 | 0 | 4/5 | p10 |
| 2026-10-14 | 100 | 0 | 4/5 | p10 |
| 2026-10-13 | 100 | 0 | 4/5 | p10 |
| 2026-10-12 | 100 | 0 | 4/5 | p10 |
| 2026-10-11 | 100 | 0 | 4/5 | p10 |
| 2026-10-10 | 100 | 0 | 4/5 | p10 |
| 2026-10-09 | 100 | 0 | 4/5 | p11 |
| 2026-10-08 | 100 | 0 | 4/5 | p11 |
| 2026-10-07 | 100 | 0 | 4/5 | p12 |
| 2026-10-06 | 100 | 0 | 4/5 | p15 |
Top water assets
- 67Mad Riverriver
- 67Mad Riverriver
- 67Pilot Creekriver
- 67Mad Riverriver
- 67R. W. Matthewsreservoir
- 67Mad R Ab Ruth Res Nr Forest Glen Cariver
- 67Mad Riverriver
- 67Boulder Creekriver
- 67Pilot Creekriver
- 67Lamb Creekriver