Cheap labor and availability of cement reduces the cost of canal construction.
Southward slope of the rivers makes construction of canals easier because water flows southwards naturally.
Huge quantities of water from monsoon rainfall and melting of snow can be stored in in reservoirs during summer season.
Irregular supply of water in the rivers is then regulated by construction of dams and barrages.
Soft soil and level land of the Indus plain makes digging of canal easier than in the rugged lands of Baluchistan.
