![po river po river](https://c8.alamy.com/comp/RGY695/casale-monferrato-alessandria-piedmont-italy-the-po-river-at-summer-RGY695.jpg)
At the division between the two courses, at that time more important, the Volano and the Primaro, rose Ferrara.Īround 1000 A.C. In the high medieval the delta form began to increase with major force of the Olana -Volano, mostly thanks to the mouth activity of the Gaurus, while the Padovetere lost progressively its efficiency, ( Branch between Voghenza and Ostellato). Many linking canals were built by the commercial developing service of Spina (VI - 111 century B.C.) that granted them the movement from Bologna to the Veneto via water. This was the axis of the flowing system and installation of the Ferrara inhabitant, the population also used it for the inside navigation, with the government control since the Etruscan Period. Along with the places where the Este city rose, the river divided into the Olana towards North ( its branches form a delta point in the Mesolano, to Monticelli, to the mouth of Gaurus), and the Padoa ( the Padovetere, where Spina rose) towards South. In the centuries significant hydrographic variations redimensionated the amount of water of the Po of Adria, a part in which entered into the Po of Ferrara thanks to a new course, the Poazzo. The progressive contribution of the material along the marshy plain progressively pushed the coastal line towards the East, creating many dunes.
![po river po river](https://elcrackdeportivo.com.ar/u/fotografias/fotosnoticias/2021/12/2/53173.jpg)
![po river po river](http://www.otra-cabeza.com.uy/wp-content/uploads/2021/12/262049712_763616775036665_3525747232170255379_n.jpg)
In the Ferrara area and in the nearby Padana del Rodigino, towards the end of the Bronze Age, the river flow articulated into two main branches: the Po of Adria and The Po of Ferrara, which developed in many branches in the eastern area. With time, the borders between the surface and submerged areas are slowly changing, the territory formed and has become relatively stable. In the last thousand years it has been radically transformed by the various factors (the quantitative dimension of the detritus, the climate, the eolian activity, the conditioning force expressed by the tributaries and by the sea, etc.). It has not always been this way on the contrary, as it happens when the water is one of the important elements of the morphology of a geographic region, the changeability of the places has been the main aspect of this landscape. Recently, the Po delta branches out into five mouths: Po of the Maestra, Po of the Pila, Po of the Tolle, Po of the Gnocca, and Po of the Goro. It begins from Monviso and winds for over 650 kms (it is not possible to precisely define its length, for the unceasable changes of the dimensions of the delta shaped by the river itself, by the sea, and by other natural and artificial agents). The river Po is the the largest Italian river flowing into the Adriatic Sea and determinating the articulated territorial system of its delta.