Lake Cochichewick, located in North Andover, Massachusetts, is the primary drinking water source for the town’s 28,000 residents. Spanning 560 acres, it is the largest lake in Essex County. The lake sits in a 2,700-acre watershed with residential areas, conservation land, and several institutional properties, making it a crucial environmental and recreational resource for the community​.
The lake, initially known as the Great Pond, has been central to the area since the early settlements in the 1640s. The surrounding water bodies and the lake significantly attracted early settlers due to their utility for mills and other industries. The town of North Andover has a rich history tied to these waters, with the lake being a focal point for past and present community activities.
Recreational Activities
Lake Cochichewick offers a range of recreational opportunities while maintaining its primary function as a water source:
Boating: Only hand-powered and electric boats are allowed, with required permits issued by the town’s Department of Public Works. This restriction helps maintain the water quality.
Fishing: Fishing is permitted with a state fishing license, providing a popular pastime for residents.
Trails and Hiking: The lake is surrounded by trails, including the Cochichewick Loop, which offers scenic views and opportunities for birding and hiking​.
The lake’s watershed management is critical due to its role in the town’s water supply. Significant efforts have been made to protect the water quality:
Watershed Protection: Comprehensive watershed management plans have been implemented since the 1986 Giardia outbreak. These plans include zoning restrictions, the creation of a Watershed Protection Overlay District, and continuous water quality monitoring.
Pollution Control: Efforts to manage pollutants include controlling fertilizer runoff and pet waste, which contribute to cyanobacteria blooms. The town has also invested in a water treatment plant to ensure safe drinking water.
Lake Cochichewick is a critical water resource and a cherished recreational spot for North Andover. Its management balances the need for clean drinking water with the community’s enjoyment of the natural environment. Efforts to protect and maintain the lake ensure it remains a vital part of North Andover for future generations.