Ans: Flood Canals:
These canals have water released into them only at the time of severe floods
so as to stop the destruction caused by floods. In summer and the
monsoons, the water level rises in rivers and heavy floods raise water levels
to dangerous extreme as well. To protect the barrage from harm, water is
then released into these canals. Many canals emerging from River Indus and
Chenab belong to this type.