Lake Alaotra is the largest
lake in
Madagascar, located in
Toamasina Province, in the northern central plateau. Its basin is composed of shallow freshwater lakes and marshes surrounded by areas of dense vegetation. It forms the center of the island's most important rice-growing region. It is a rich habitat for wildlife, including some rare and endangered species, as well as an important fishing ground. Lake Alaotra and its surrounding
wetlands cover , and include a range of habitats, including open water, reedbeds, marshes, and
rice paddies. The lake itself covers . Lake Alaotra was declared a
wetland of international importance under the international
Ramsar Convention on February 2, 2003.