Coordinates: 43°00′01″N 71°20′49″W / 43.0004°N 71.3470°W Little Massabesic Brook and Sucker Brook form a 1.9-mile-long (3.1 km)stream located in southern New Hampshire in the United States. They are tributaries of Massabesic Lake, part of the Merrimack River and Gulf of Maine watersheds. Despite the streams' short length, they are subject to the New Hampshire Comprehensive Shoreland Protection Act, because of their fourth order stream status (indicating a high number of upstream tributary sets).
Little Massabesic Brook is formed by the confluence of Hook Brook and Preston Brook in Auburn, New Hampshire. The brook flows west, is interrupted by Little Massabesic Lake, then continues west to Clark Pond Brook. At this juncture, the stream changes name to Sucker Brook and flows south, past the village proper of Auburn, and enters Massabesic Lake.