Which lake in Nicaragua contains Ometepe Island?

Lake Nicaragua is the lake that contains Ometepe Island.

Also called Lake Cocibolca, Lake Nicaragua is a large tectonic freshwater lake in southern Nicaragua. Ometepe rises from its waters as an island formed by two volcanoes—Concepción and Maderas—joined by a low isthmus. Its name comes from Nawat words meaning “two mountains.”

Ometepe covers about 276 square kilometres and is the largest island in Lake Nicaragua. The lake itself covers roughly 8,264 square kilometres, making it the largest freshwater lake in Central America. It contains hundreds of islands and drains eastward through the San Juan River to the Caribbean Sea.

A common mix-up is Lake Managua, which lies to the northwest and is connected to Lake Nicaragua by the Tipitapa River when water levels permit. Ometepe is not in that smaller neighbouring lake. Lake Nicaragua also has a notable maritime history: vessels and passengers once used it and the San Juan River as part of a route between the Caribbean and the Pacific before the Panama Canal era.