Managua Lake covers the area of 1,024 sq km. It is 65 km long and 25 km wide. The lake is 9.5 m deep, but the maximum depth reaches 80 m. It has the altitude of only 37 m above sea level. The capital of Nicaragua - Managua - is situated on the south-western bank of the lake. The volcano Mamotombo towers over its north side. Managua Lake has repeatedly been heavily polluted. In 1950, a big amount of mercury contaminated the lake. It was only a few years ago that the lake began to be cleaned.
Managua Lake is connected to Lake Nicaragua, known as the habitat of bull sharks, by te Tipitapa River. Until recently, Lake Nicaragua was the only place where those carnivore creatures lived but they do not hesitate to pursue their pray even upriver. As a result, you can see them in Lake Managua, too.