Glossary

Bank: Land sloping up along each side of a river.

Dams: Barrier built across a river to hold back the water and form a reservoir to prevent flooding.

Global Warming: The average temperature of the earth are raised.

Tides: Regular rise and fall in the level of the sea, caused by the attraction of the moon and the sun.

Storms: Occasion of violent weather conditions, with strong winds and rain or snow or thunder.

Lake: Large area of water surrounded by land.

Silting: The state of which the river is blocked by a large amounts of sediment.

Riverbed: Ground over which a river flow.

Settlement: The act or state of silting or the state of being settled.

Deforestation: Cut down trees.

Dyke: The embankment or wall of a river.