Resulted the Magadinoebene from the sediments, which the Ticino deposited here. Up to the river correction between 1888 and 1912 the area was an inaccessible swampland, which full disease germs was and if necessary isolated of Schafhirten as pastureland one used. All villages lie, against inundations protected, at the edge of the level on increased washing cones of the side brooks.
With the waters corrections outgoing 19. Century the Ticino, which before used the entire valley width in innumerable Mäandern, was squeezed into 60 m a broad, straight pulled channel. Flood dams on both sides the banks prevent that the river steps over the banks.
The earlier swampland drying-put by expanded water off-takes is today an intensively used agrarian area, among other things cultivation of rice, in which in addition, industry settled. Here also the airfield of Locarno lies.
Only within the direct muzzle range of the Ticino di Magadino remained a protected area with the Bolle, which forms a species-rich biotope for many rare animal species with its oxbow arms, reed belts, pools and Auwäldern.