Puffer's Pond (Factory Hollow Pond) is Amherst's largest open water body at approximately 11 acres, offering access for fishing, canoeing, paddling, and nature walks with multiple trailheads and parking areas.

The pond features two beaches (North and South) with amenities and is part of an extensive trail network through the Mill River Recreation Area, though water quality is monitored regularly during swimming season and occasionally restricted due to bacterial contamination.