The East Brookfield River is a 2.4-mile-long (3.9 km)[1] river in Massachusetts that heads at Lake Lashaway in East Brookfield at an elevation of 614 feet (187 m) above sea level.

It continues to Quaboag Pond, at an elevation of 594 feet (181 m).

This river receives its name from East Brookfield, Massachusetts.

This river starts at the Lake Lashaway Dam, near State Route 9 and continues through wetlands to Quaboag Pond.

About one mile from its mouth at Quaboag Pond, the Seven Mile River joins, draining water from Spencer and surrounding areas.