The Bronx River (/brɒŋks/), approximately 24 miles (39 km) long, flows through southeast New York in the United States and drains an area of 38.4 square miles (99 km2). It is named after colonial settler Jonas Bronck. Besides the Hutchinson River, the Bronx River is the only fresh water river in New York City. The tract purchased by Jonas Bronck in 1639 lay between the Harlem River and the river that came to be called "Bronck's river".