Made by Florence, Marie, Delphine, Sarah, Lara, Laurence, Aurélie

Rivers & ecological problems

1. The Lys (Leie)

Some information …

* Source : North-France, Lisbourg

* Mouth : Gent, The Scheldt (Schelde)

* Length : 202 km (109 km in Belgium)

* Country border Belgium & France (24 km)

Functions (the Lys)

* Agriculture : flax

* Buffer

* Water depository (against floods and aid for agriculture

History (the lys)

* Spinning and weaving of flax

* Favourite place for paintors

* 3 battles ( Allies German Army, WWI & WW2 )

The Scheldt

Some information…

* Source: Gouy-Le-Câtelet ( North France )

* Mouth: across Antwerp, towards the Northsea

* Length: 350 km (138 km canalised )

Functions

* Employment at the harbour of Antwerp

* Transport (-> navigation)

* Carrying of surface water, household water and industrial waste water

* Important agricultural, ecological

* Drinking-water

History

* Commercial and strategic importance

* Border between West & East empire

* Closed (Spanish control)

* Opened (French Revolutionary, 1972)

Problems

* Collapsing of the dikes

* The biodiversity

* The Water level of the Scheldt

* Floods

Collapsing of the dikes

Solutions:* To Reinforce the insides of the dikes

* A stability system

* A reinforced concrete wall

The level of the water

Solution:* Dredging the river

Biodiversity decreases

Biodiversity decreases

• Balance of nature

• Endangered species

• Problems for human life?

Most important causes

Problems

• Pollution

• Climate changes

Biodiversity decreases

Solutions

• Pollution: - Green energy - International agreements (Kyoto) - Clearing water - STOP dumping of chemical waste

• Climate changes:- Green energy- International agreements (Kyoto)- Decrease of energy

Floods

Problems

• Death

• Damamage

• In- or exclosure

Solutions

• Dams• Locks• Decrease of energy• International agreements• Green energy

Floods