What was the 2010 population of the New Hampshire town drained by the Merrymeeting and represented by Martin C. Harty?
Martin Harty:  A Republican, he was one of eight legislators who represent Strafford County District 3, comprising the towns of Barrington, Farmington, Middleton, Milton, New Durham, and Strafford. New Durham, New Hampshire:  The population was 2,638 at the 2010 census. New Durham, New Hampshire:  It is drained by the Merrymeeting , Cocheco and Ela rivers, and is known for Merrymeeting Lake.
2,638