Río Grande de Matagalpa

Río Grande de Matagalpa (, Awaltara in Miskito, Ucumulalí in Matagalpa) is a river of Nicaragua. Running 430 km from its source near Matagalpa to the Caribbean Sea in the northern part of the South Caribbean Autonomous Region it is the second longest river in Nicaragua. It gives it name to the city and municipality of La Cruz de Río Grande. The Tumarín Dam is being constructed on its lower reaches.