Then, after its withdrawal, within the amphitheatre which it had formed, only some loose marshy districts, between which the two lakes of the area: Lake Candia, with its marshes, and Lake Viverone.

Lake Candia is 226 m above the sea level, is 1,52 sq. Km wide and its coast boundary is 5,5 km. Its average depth is 4,7 m, while the maximum reached in the middle of the basin is 7,7 m.
The stretch of water is deprived of tributaries and it is fed partly by rain-water and partly by a series of submerged sources along the south coast. The whole basin is an essential environment as a halting and reproduction place for water birds; there are 190 bird species, 80 of which are nest-builder. The most relevant are bittern, red heron and tufted duck. The reported vegetable species are 425, 227 of which are literally close to the lake. The Candia marsh area is finally an evident proof of the major extension of the lake basin and includes, in addition to the marsh in the proper sense of the word (0.5 sq. Km), the little drain canals and the little lakes known as Paludetta (0.2 sq. Km).