The Millecampi marshland occupies a large part of the southwestern Venice Lagoon included between the south Brenta drainage area, the Morosina and Ghebo Storto fish hatcheries (dams) to the west, the Prime Poste marsh area, and sandbars to the east, for a total 4.6 sq km area. The work required restoring the canals to navigable status, reconstructing the sandbars, and rebuilding embankments against the Casoni delle Sacche and Millecamp areas. Canals some 6 km long were created by moving almost 40,000 cubic meters of lagoon sediment. The new Sacca Piccola and Pezzegalo sandbars were built in a concave shape against the prevailing wind action to facilitate the deposit of sediment by waves.