[1] The lake receives the Mundaú River, and is connected to the Atlantic Ocean and Manguaba Lagoon by a network of canals which cross the plain forming a lot of little islands.

The lagoon contains to large mangrove and numerous types of fish, crabs, shrimps and shellfish.

Besides Maceió, two other municipalities are located on its edge, the little towns of Santa Luzia do Norte and Coqueiro Seco.

The natural environment of Mundaú Lagoon is affected by pollution problems, mainly due to urban sewage dispensing along its shore close to downtown Maceió.

[4] Recently a new threat has arisen to the ecosystem of the Mundaú lagoon, the mining of rock salt by Braskem company.