Pemigewasset River at Plymouth, NH
USGS Site No: 01076500 • Pemigewasset River • Grafton County, NH
Pemigewasset River at Plymouth, NH on the Pemigewasset River is currently at 914 cfs (Normal — 55th percentile for this date) . Gage height: 1.59 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for October 28 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.
| Percentile | Label | CFS Threshold | Today's Flow |
|---|---|---|---|
| 10th | Very Low threshold | 259 | |
| 25th | Low threshold | 406 | |
| 50th (Median) | Normal (median) | 812 | |
| 75th | High threshold | 1,350 | Today: 914 cfs |
| 95th | Very High threshold | 4,580 |
30-Day Hydrograph
Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| May 28, 2026 | 1,090 | — |
| May 27, 2026 | 1,450 | — |
| May 26, 2026 | 2,290 | — |
| May 25, 2026 | 2,050 | — |
| May 24, 2026 | 1,000 | — |
| May 23, 2026 | 1,080 | — |
| May 22, 2026 | 1,250 | — |
| May 21, 2026 | 1,530 | — |
| May 20, 2026 | 1,870 | — |
| May 19, 2026 | 2,360 | — |
| May 18, 2026 | 3,050 | — |
| May 17, 2026 | 4,200 | — |
| May 16, 2026 | 7,170 | — |
| May 15, 2026 | 16,500 | — |
| Apr 21, 2026 | 3,350 | — |
| Apr 20, 2026 | 5,040 | — |
| Apr 19, 2026 | 4,460 | — |
| Apr 18, 2026 | 4,870 | — |
| Apr 17, 2026 | 7,740 | — |
| Apr 16, 2026 | 5,310 | — |
| Apr 15, 2026 | 7,160 | — |
| Apr 14, 2026 | 4,090 | — |
| Apr 13, 2026 | 2,540 | — |
| Apr 12, 2026 | 2,440 | — |
| Apr 11, 2026 | 2,740 | — |
| Apr 10, 2026 | 2,000 | — |
| Apr 9, 2026 | 2,110 | — |
| Apr 8, 2026 | 2,450 | — |
| Apr 7, 2026 | 3,240 | — |
| Apr 6, 2026 | 4,700 | — |
Station Information
- USGS Site No
- 01076500
- State
- NH
- County
- Grafton County
- Coordinates
- 43.7592, -71.6856
- Drainage Area
- 622 mi²
- Datum (ft)
- 456.7
- HUC Code
- 01070001
Flood Stage Thresholds
- Action Stage
- 10.0 ft
- Flood Stage
- 13.0 ft
- Moderate Flood
- 18.0 ft
- Major Flood
- 21.0 ft
Currently 11.41 ft below flood stage.
Recent Extremes
- Max discharge
-
16,500 cfsMay 15, 2026
- Min discharge
-
112 cfsSep 22, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Cockermouth River Below Hardy Brook, at Groton, NHNormal8.3 mi · 46 cfs
-
Baker River Near Rumney, NHNormal8.4 mi · 177 cfs
-
Smith River Near Bristol, NHNormal13.7 mi · 108 cfs
-
Pemigewasset River at Woodstock, NHNormal15.0 mi · 364 cfs
-
East Branch Pemigewasset River at Lincoln, NHNormal20.0 mi · 239 cfs