Uses of Canal Irrigation, Causes & Effects
Cheap labour and availability of cement reduces the cost of canal construction Huge quantities of water from Monsoon rainfall & melting of snow can be stored in reservoirs during summer season. Irregular supply of water in the rivers is then regulated by construction of dams & barrages. Canal system irrigates a vast area. Even the deserts have been made productive. Causes:Abundance of silt eroded from the Karakoram, Hindu Kush and Himalayan mountains.Deforestation - ruthless cutting of trees for fuel and timber. Rivers form narrow and deep valleys in the mountainous areas. Most of the eroded material is washed down into the plains and piles up in reservoirs of the dams. | |
Effects:
Uses of Irrigation:
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