Rivers and flooding in New Hampshire
56 river gauges the National Weather Service watches in New Hampshire. Each has its forecast, flood stages and impacts, and its crest history.
Flood outlook
Significant river flooding over the next five days, and each gauge’s chance of flooding over the next three months.
No significant river flooding is outlined in New Hampshire in the next five days.
Most likely to flood, September to November
- Pemigewasset River at Plymouth7% chance of moderate flooding
- Pemigewasset River at Woodstock26% chance of minor flooding
- Ammonoosuc River at Bethlehem6% chance of moderate flooding
- Saco River near Conway12% chance of minor flooding
- Warner River at Davisville9% chance of minor flooding
- Smith River (NH) at Bristol7% chance of minor flooding
- Sugar River (NH) at West Claremont7% chance of minor flooding
7 of the 19 gauges the River Forecast Centers forecast in New Hampshire have a stated chance of flooding in this period.
Ammonoosuc River
Androscoggin River
Ashuelot River
Atlantic Coast
Baker River
Bearcamp River
Beaver Brook
Cocheco River
Cockermouth River
Cold River
Connecticut River
Contoocook River
Diamond River
East Branch Pemigewasset River
Exeter River
Isinglass River
Lamprey River
Merrimack River
Oyster River
Peabody River
Pemigewasset River
Piscataquog River
Saco River
Smith River (NH)
Souhegan River
South Branch Piscataquog River
Spicket River
Sugar River
Sugar River (NH)
Suncook River
Swift River
Upper Ammonoosuc River
Warner River
Winnicut River
Winnipesaukee River
Sources
Gauges, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow from the U.S. Geological Survey.