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po river and its delta
The Po, known in past times as the Eridano, is Italy's longest river. It measures 652 km in length, has an average capacity of 1,500 m3 (as measured at the height of Ferrara), and a drainage basin measuring approximately 75,000 km2. The importance of the river makes it comparable to other great European rivers such as the Rhone, the Danube, the Rhine, and the Guadalquivir. One of the main characteristics of the Po is its delta, a landscape in constant transformation due to its typical lobed shape caused by the accumulation of sediments. This large river flows through a variety of different habitats. The final stretch is typical of water courses found in flat areas: the river is shallow, the water warm and slow-flowing; vegetation is abundant; the river bed is muddy and subject to a wide range of habitats. The main indigenous fish varieties found in these habitats are: carps, rudds, bleaks, eels, roaches, nases, common barbels, and royal perches.
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