Key Facts about Seine River

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About Seine River:

It is France’s second-longest river after the Loire, covering a distance of 775 kilometers.
This river has a drainage basin, known as the Paris Basin, of approximately 79,000 square kilometers and drains mainly northern France.
Course:
- It rises 446 meters above sea level in the wine-making region of Burgundy, near the town of Dijon.
- As the Seine approaches Paris, it is joined by the Marne, one of its largest tributaries, on the right bank.
- It flows through Paris for about 13 kilometers from west to east.
- It finally empties into the English Channel, an arm of the Atlantic Ocean separating northern France and southern England.
Most of the river basin is formed of permeable rocks, the absorptive capacity of which mitigates the risk of river floods.
The basin receives modest annual precipitation ranging from 650 to 750 millimeters.
It is one of Europe’s great historic rivers, and its drainage network carries most of the French inland waterway traffic.

Q1: What is permeability?

The ease with which fluid is transmitted through a rock’s pore space is called permeability. Although a rock may be very porous, it is not necessarily very permeable. Permeability is a measure of how interconnected the individual pore spaces are in a rock or sediment. A sandstone is typically porous and permeable. Shales are porous but have a lower permeability because the finer grain size creates smaller pore spaces.

Source: Seine River in Paris still too polluted for Olympic events as opening ceremony looms