Question

Ghaghara,gandak and kosi river causes widespread damage to life and property still they are economically and geographically important

Answer 1

Ghaghara, Gandak and Kosi River have caused a lot of damage due to floods and cause a lot of destruction of life and property but they are the most important tributaries of Ganga.

These rivers are major source of irrigation in Bihar.

Geographically the river kosi is located in Nepal and India so there are plans of making dams on them.

This will benefit both the countries for electricity and controlling harm from floods.