Belize River is a 180-mile (290 km) river in Belize that drains more than one-quarter of the country as it winds along the northern edge of the Maya Mountains across the center of the country to the sea just north of Belize City (17°32′N88°14′W). However, the Belize River/Mopan River Catchment contains over 45 percent of the population of Belize.