|Lake Piso is a saltwater lake with an open connection to the Atlantic Ocean. On the shores of the lake is a very rare form of tropical forest.
Liberia has just designated Lake Piso as its first "wetland of international importance" under the Ramsar Convention (June 2003).
In September 1998, heavy rains in Liberia's eastern Grand Cape Mount county left thousands homeless as torrential downpours had submerged towns and villages after Lake Piso burst its banks. Some 2,000 people from 19 local villages and towns were made homeless.
Lake Piso served as a base for U.S. naval forces during World War II.