Upper Androscoggin River HUC8 01040001
A 3,549 km² sub-basin of the New England region in CN, ME, NH. 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
60
Moderate
Drought index
200
Severe
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
50%
of 4 reporting
Median flow
81%
p25 of record
Water assets
1,784
14 springs · 690 wells
USGS gauges (4)
- Androscoggin River at Errol, NH010535001,060 cfsp12 · below normal
- Androscoggin River near Gorham, NH010540001,560 cfsp18 · below normal
- Androscoggin River below Bog Brook at Cambridge NH010536001,270 cfsp31 · normal
- Diamond River near Wentworth Location, NH01052500423 cfsp81 · above normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-18 | 200 | 0 | 2/4 | p25 |
| 2026-10-17 | 200 | 0 | 2/4 | p23 |
| 2026-10-16 | 200 | 0 | 2/4 | p18 |
| 2026-10-15 | 200 | 0 | 1/4 | p33 |
| 2026-10-14 | 200 | 0 | 2/4 | p24 |
| 2026-10-13 | 200 | 0 | 4/4 | p10 |
| 2026-10-12 | 200 | 0 | 4/4 | p9 |
| 2026-10-11 | 200 | 0 | 4/4 | p9 |
| 2026-10-10 | 200 | 0 | 4/4 | p9 |
| 2026-10-09 | 200 | 0 | 4/4 | p9 |
| 2026-10-08 | 192 | 0 | 4/4 | p9 |
| 2026-10-07 | 192 | 0 | 4/4 | p9 |
| 2026-10-06 | 192 | 0 | 4/4 | p10 |
| 2026-10-05 | 192 | 0 | 4/4 | p10 |
Top water assets
- 67Middle Branch Dead Diamond Riverriver
- 67West Branch Little Magalloway Riverriver
- 67Middle Branch Dead Diamond Riverriver
- 67Middle Branch Little Magalloway Riverriver
- 67East Branch Dead Diamond Riverriver
- 67East Branch Dead Diamond Riverriver
- 67Cupsuptic Riverriver
- 67Bereau Brookriver
- 67Cupsuptic Riverriver
- 67Cupsuptic Riverriver