Magdalena River

The Magdalena River (Spanish: Río Magdalena; Less commonly Rio Grande de la Magdalena) is the principal river of Colombia, flowing northward about 1,528 kilometres (949 mi) through the western half of the country. It takes its name from the biblical figure Mary Magdalene. It is navigable through much of its lower reaches, in spite of the shifting sand bars at the mouth of its delta, as far as Honda, at the downstream base of its rapids. It flows through the Magdalena River Valley.

Its drainage basin covers a surface of 27.3 million hectares, which is 24% of the country's area and where 66% of its population lives. Also 86% of Colombia's gross domestic product is generated there.