The Dora Baltea springs from the highest mountain of Europe, the Mount Blanc (4810 m.),
it runs for 160 km. and then flows into the river Po.
In its first
part in the Aosta valley it is a typical alpine creek. Before reaching the city of Aosta it becomes wider, yet
maintaining the typical alpine river characteristics with stony bottom.
After the city of Aosta the river is unfortunately subject to water captions, and sometimes its
imponent course is reduced to a brook. After the border with Piedmont the river becomes larger and deeper and
host trout and grayling. During the snow and ice melting period (it springs from a glacier), normally between May and September,
the Dora Baltes is characterized by high water with waxy colour, therefore during summer
there is no good fly fishing here.