Contoocook River Near Henniker, NH
USGS Site No: 01085000 • Contoocook River • Merrimack County, NH
Contoocook River Near Henniker, NH on the Contoocook River is currently at 426 cfs (Normal — 59th percentile for this date) . Gage height: 6.07 ft.
Reading from
Historical Percentile Comparison
Today's discharge compared to the long-term record for June 11 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 | 122 | |
| 25th | Low threshold | 223 | |
| 50th (Median) | Normal (median) | 333 | |
| 75th | High threshold | 604 | Today: 426 cfs |
| 95th | Very High threshold | 1,270 |
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 | 442 | — |
| May 27, 2026 | 663 | — |
| May 26, 2026 | 653 | — |
| May 25, 2026 | 436 | — |
| May 24, 2026 | 340 | — |
| May 23, 2026 | 414 | — |
| May 22, 2026 | 458 | — |
| May 21, 2026 | 539 | — |
| May 20, 2026 | 766 | — |
| May 19, 2026 | 1,050 | — |
| May 18, 2026 | 1,490 | — |
| May 17, 2026 | 2,120 | — |
| May 16, 2026 | 2,650 | — |
| May 15, 2026 | 2,690 | — |
| Apr 21, 2026 | 621 | — |
| Apr 20, 2026 | 670 | — |
| Apr 19, 2026 | 668 | — |
| Apr 18, 2026 | 715 | — |
| Apr 17, 2026 | 690 | — |
| Apr 16, 2026 | 660 | — |
| Apr 15, 2026 | 635 | — |
| Apr 14, 2026 | 566 | — |
| Apr 13, 2026 | 576 | — |
| Apr 12, 2026 | 641 | — |
| Apr 11, 2026 | 753 | — |
| Apr 10, 2026 | 904 | — |
| Apr 9, 2026 | 1,040 | — |
| Apr 8, 2026 | 1,150 | — |
| Apr 7, 2026 | 1,290 | — |
| Apr 6, 2026 | 1,470 | — |
Station Information
- USGS Site No
- 01085000
- State
- NH
- County
- Merrimack County
- Coordinates
- 43.1520, -71.8573
- Drainage Area
- 368 mi²
- Datum (ft)
- 469.7
- HUC Code
- 01070003
Flood Stage Thresholds
- Action Stage
- 10.0 ft
- Flood Stage
- 12.0 ft
- Moderate Flood
- 16.0 ft
- Major Flood
- 20.0 ft
Currently 5.93 ft below flood stage.
Recent Extremes
- Max discharge
-
5,520 cfsMay 11, 2025
- Min discharge
-
40 cfsSep 4, 2025
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Contoocook River below Hopkinton Dam at West Hopkinton, NHNormal6.2 mi · 478 cfs
-
Warner River at Davisville, NHNormal9.3 mi · 162 cfs
-
Nubanusit Bk below Macdowell Dam near Peterborough NHUnknown19.1 mi · 0 cfs
-
Contoocook River at Peterborough, NHNormal20.7 mi · 66 cfs
-
Merrimack River at Franklin Junction, NHHigh21.4 mi · 3,570 cfs