NEW HAMPSHIRE FLOW REPORT

Last Updated: January 2, 2026

New Hampshire's rivers and streams are experiencing significant deviation from their normal flow patterns, which is noteworthy for water enthusiasts looking for seasonal trends and potential hazards. Many rivers, including the Androscoggin, Saco, and Pemigewasset, are flowing below their typical levels for this time of year, with the Androscoggin River near Gorham flowing at 2,290 cubic feet per second (cfs), a notable 43.26% below normal. Conversely, the Upper Ammonoosuc River near Groveton and the Connecticut River at North Stratford are exceptions, with streamflows at 51.37% and 102.58% above normal, respectively, suggesting an unusual abundance of water in these areas. The current gage height at the Connecticut River at North Stratford stands at 6.75 feet, indicating a robust streamflow that could heighten the risk of flooding, particularly if there are sudden rainfalls or upstream water release events.

Whitewater enthusiasts and communities along these rivers should be cautious, as the variability in streamflow can affect recreational conditions and local ecosystems. For example, the Pemigewasset River at Plymouth is experiencing higher-than-normal flows at 2,890 cfs (43.5% above normal), which may appeal to thrill-seekers for challenging conditions but also raises concerns for potential flood risks in nearby areas like Plymouth. Similarly, the lower-than-usual streamflow of the Androscoggin River at Errol, measured at 1,220 cfs, 46.72% below the norm, may affect the river's navigability and local fish habitats. These fluctuations highlight the importance of monitoring river conditions and being prepared for sudden changes, as they impact not only recreational activities but also the safety and well-being of communities residing near these waterways.

       



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.