The country is drained by five principal rivers and several smaller ones with the largest and most important the Zambezi. The country has four notable lakes: Lake Niassa (or Malawi), Lake Chiuta, Lake Cahora Bassa and Lake Shirwa, all in the north. The major cities are Maputo, Beira, Nampula, Tete, Quelimane, Chimoio, Pemba, Inhambane, Xai-Xai and Lichinga.