The Contoocook River is a 71-mile-long (114 km) river in New Hampshire. It flows from Pool Pond and Contoocook Lake on the Jaffrey/Rindge border to Penacook (just north of Concord), where it empties into the Merrimack River. It is one of only a few rivers in New Hampshire that flow in a predominantly northward direction. Two picturesque covered bridges in Hopkinton and one in Henniker span the Contoocook, as does another on the Hancock-Greenfield line. Residents and tourists have made the Contoocook popular for fishing and whitewater boating.