NEW HAMPSHIRE FLOW REPORT

Last Updated: December 24, 2025

In New Hampshire, river enthusiasts and water resource managers are observing a trend of below-average streamflows across most of the state's watersheds, signaling a potential concern for flow droughts. Many rivers, including the Androscoggin, Saco, Pemigewasset, and Merrimack, are experiencing streamflows significantly lower than normal for this time of year. Notably, the Pemigewasset River at Plymouth is one of the few rivers flowing near normal at 3920 cubic feet per second (cfs), with a minimal 24-hour change. In contrast, the Sugar River at West Claremont and the Contoocook River near Henniker are flowing at only 18.91% and 27.34% of their normal rates respectively, which could impact the surrounding ecosystems and recreational activities.

Specifically for whitewater enthusiasts, the Bearcamp River at South Tamworth, a popular kayaking spot, is showing low streamflow levels at 208 cfs, which is 46.38% below normal, with a gage height of 4.68 feet. The Connecticut River, a major waterway for both recreation and ecosystem services, is also reporting lower than average flows, with the Connecticut River at North Walpole flowing at 4390 cfs, a 10.58% increase over the last 24 hours yet still 73% below the seasonal norm. These conditions may have implications for cities like Concord and recreational areas along these rivers. River users are urged to stay informed on the latest streamflow data, as low flows may affect water quality and limit recreational opportunities, while any sudden increases could indicate potential flooding events.

       



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.