The document summarizes the major river systems of Europe. It divides the rivers into four watersheds: 1) Arctic Ocean, which includes the Pechora and Northern Dvina rivers; 2) Atlantic Ocean, such as the Elbe, Rhine, and Seine rivers; 3) Mediterranean, including the short and irregular Rhône and Po rivers; 4) Black Sea and Caspian Sea, home to Europe's longest rivers like the Volga, Ural, Danube, Dniester, Dnieper, and Don rivers that run through Central Europe's plains.

1. Rivers in Europe
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1. Arctic Ocean watershed.
The rivers of northern Europe empty into the Arctic Ocean. These rivers have a high flow.
They freeze in winter. The most important ones are:
● The Pechora
● Northern Dvina.
2. Atlantic Ocean watershed.
These rivers have a high flow due to the regular rainfall. The most important rivers are:
● The Elbe, the Rhine and the Seine.
● Other rivers in this group, such as the Oder and the Vistula, empty into the Baltic Sea.
3. Mediterranean watershed.
Characteristics of these rivers: short rivers with low or irregular due to summer droughts
(sequías). Major rivers include:
● The Rhône.
● The Po.
4. Black Sea and Caspian Sea watershed.
These rivers are the longest on the continent. They run through the plains of Central Europe.
Two of Europe’s most important rivers empty into the Caspian Sea:
● The Volga, Europe’s longest river.
● The Ural, which forms the border between Europe and Asia.
Other important European rivers empty into the Black Sea:
● The Danube,
● The Dniester,
● The Dnieper
● The Don.