NEW-HAMPSHIRE RESERVOIR REPORT

Last Updated: December 21, 2025

In New Hampshire, the state's dams and reservoirs are closely monitored to manage water resources effectively. Among these, Lake Winnipesaukee is a critical water body, known for its size and the recreational opportunities it offers. As of the most recent observations dated December 21, 2025, the gage height at Weirs Beach on Lake Winnipesaukee stands at 3 feet, which is 0.77 feet below the average of 3.77 feet. This deviation from the average storage level can raise concerns about potential water supply issues or impacts on local ecosystems. It's important for residents and stakeholders to stay informed about these changes, as they can affect water management decisions and recreational activities on the lake.

Upon cross-referencing with multiple data sources, including local hydrological surveys and environmental agencies, the lower water levels at Lake Winnipesaukee could be attributed to a range of factors such as below-average snowpack leading to reduced spring runoff, lower-than-normal river flows, or perhaps increased water usage. Abnormal conditions like these can have broader implications, such as affecting hydroelectric power generation, water quality, and the habitat of aquatic species. The current gage height is an important indicator, and continued monitoring will be necessary to determine if this is a short-term fluctuation or a sign of a more prolonged trend in water level changes for the region's dams and reservoirs. Stakeholders and residents who rely on these water bodies for various purposes should remain alert to updates and advisories from water management authorities.

New Hampshire has several reservoirs and dams that serve as important sources of water supply for various purposes like hydroelectric power generation, irrigation, and recreation. Some of the major reservoirs in the state include Lake Winnipesaukee, Squam Lake, Newfound Lake, and Lake Winnisquam. These reservoirs are fed by several streams, rivers, and creeks including the Merrimack River, Pemigewasset River, and Winnipesaukee River. The snowpack from the White Mountains is a crucial source of water for these reservoirs. In recent years, New Hampshire has experienced drought conditions, leading to record low levels in some reservoirs. Seasonal trends in the area show that spring is usually the wettest season, and winter snowfall contributes significantly to the water supply. The hydrology in the area is highly dynamic and influenced by several factors like precipitation, temperature, and topography. To ensure sustainable water management, New Hampshire has implemented various policies and regulations to protect its water resources.

New Hampshire has several reservoirs and dams that serve as important sources of water supply for various purposes like hydroelectric power generation, irrigation, and recreation. Some of the major reservoirs in the state include Lake Winnipesaukee, Squam Lake, Newfound Lake, and Lake Winnisquam. These reservoirs are fed by several streams, rivers, and creeks including the Merrimack River, Pemigewasset River, and Winnipesaukee River. The snowpack from the White Mountains is a crucial source of water for these reservoirs. In recent years, New Hampshire has experienced drought conditions, leading to record low levels in some reservoirs. Seasonal trends in the area show that spring is usually the wettest season, and winter snowfall contributes significantly to the water supply. The hydrology in the area is highly dynamic and influenced by several factors like precipitation, temperature, and topography. To ensure sustainable water management, New Hampshire has implemented various policies and regulations to protect its water resources.