NEW HAMPSHIRE FLOW REPORT
Last Updated: December 26, 2025
New Hampshire's streamflow conditions are currently showing a mix of below-normal flows and notable fluctuations that river enthusiasts and local communities should be aware of. The Androscoggin River, a significant waterway for recreation and ecology, is experiencing flow levels significantly below the norm, with the site near Gorham reporting a current streamflow of 1690 cubic feet per second (cfs), which is approximately 50% less than what is typically expected. Similarly, the Pemigewasset River, popular among whitewater aficionados, shows a current streamflow of 2750 cfs at Plymouth, indicating a flow rate that is nearly 41% below average. The Saco River near Conway, another frequented spot for river activities, shows a deep reduction at 69.49% below normal with a current streamflow of 315 cfs. These below-average conditions point to potential issues for water-based recreation, ecosystem health, and water supplies.
In contrast, the Upper Ammonoosuc River near Groveton and the Connecticut River at North Stratford are experiencing higher-than-average flows, with the former exceeding the norm by over 51% at 1270 cfs, and the latter up nearly 11% at 2650 cfs. Such increases could indicate localized flooding risks. The Connecticut River, a major watershed in the region, has various sites with decreased flow, like at North Walpole, where the river is flowing at 4320 cfs, which is 74% below the expected level, potentially impacting cities like Claremont and Lebanon. Water enthusiasts should exercise caution during this period of variable conditions, as waterways like the Bearcamp River at South Tamworth and the Merrimack River, essential to the state's hydrology and recreation, also exhibit lower-than-normal levels that may affect popular whitewater trails and local water resources.
New Hampshire has a humid continental climate with cold winters and warm, humid summers. Major surface flows include the Connecticut River, which forms the western border of the state, and the Merrimack River, which flows through the central part of the state. The Pemigewasset, Saco, and Androscoggin Rivers are also significant. There are numerous reservoirs and dams in the state, including the Amoskeag Dam on the Merrimack River. Hydrology in New Hampshire is influenced by precipitation patterns, which vary widely across the state. Snowpack in the winter months is a major source of water for rivers and streams in the spring and summer. The state's many watersheds, including the Connecticut River watershed, play a critical role in determining flow conditions.
Explore Rivers
- Ammonoosuc River
- Androscoggin River
- Ashuelot River
- Baker River
- Bearcamp River
- Blackwater River
- Cocheco River
- Connecticut River
- Contoocook River
- Diamond River
- Exeter River
- Isinglass River
- Lamprey River
- Merrimack River
- North Branch River
- Oyster River
- Pemigewasset River
- Piscataquog River
- Saco River
- Smith River
- Souhegan River
- Spicket River
- Sugar River
- Suncook River
- Upper Ammonoosuc River
- Warner River
- Winnicut River
- Winnipesaukee River