NEW-JERSEY RESERVOIR REPORT

Last Updated: February 1, 2026

The latest observations of the nation's dams and reservoirs indicate varied water storage levels, reflecting a complex interplay of natural and managed water systems. Some reservoirs are experiencing surpluses, while others grapple with the effects of prolonged drought conditions. For instance, Lake Winnipesaukee at Weirs Beach, New Hampshire, is currently below its average gauge height, which could point to decreased inflows or increased water usage. Notably, major water bodies such as Lake Powell in Arizona report storage levels significantly under historical averages, hinting at the broader impacts of long-term drought exacerbated by climate change.

A contrasting scenario is observed at reservoirs like Pueblo Reservoir in Colorado, where storage levels surpass the average, potentially due to recent precipitation events or strategic water management. The variation in reservoir conditions underscores the importance of dynamic water management strategies to adapt to the environmental challenges and ensure sustainable water supplies. Hydrologists and water managers are thus continually monitoring these critical water sources to manage resources effectively, balancing ecological needs with human consumption and maintaining the overall health of watersheds.

New Jersey has several major reservoirs, including the Manasquan Reservoir, the Round Valley Reservoir, and the Wanaque Reservoir. These reservoirs are fed by a variety of streams and rivers, including the Manasquan River, the Raritan River, and the Wanaque River. The state's location in the northeastern United States means that snowpack and mountain runoff are important factors in the hydrology of the area. Record levels and drought conditions have been observed in New Jersey in recent years, with severe drought conditions experienced in 2020. Seasonal trends show that streamflow and reservoir levels tend to be highest in the spring and lowest in the fall, with the summer months often experiencing drought conditions. Despite these challenges, New Jersey has worked to improve its water infrastructure, including dam and reservoir management, to ensure a reliable supply of clean water for its residents.

New Jersey has several major reservoirs, including the Manasquan Reservoir, the Round Valley Reservoir, and the Wanaque Reservoir. These reservoirs are fed by a variety of streams and rivers, including the Manasquan River, the Raritan River, and the Wanaque River. The state's location in the northeastern United States means that snowpack and mountain runoff are important factors in the hydrology of the area.

Record levels and drought conditions have been observed in New Jersey in recent years, with severe drought conditions experienced in 2020. Seasonal trends show that streamflow and reservoir levels tend to be highest in the spring and lowest in the fall, with the summer months often experiencing drought conditions. Despite these challenges, New Jersey has worked to improve its water infrastructure, including dam and reservoir management, to ensure a reliable supply of clean water for its residents.