In recent years, there has been an increasing incidence of floods in Northern India because

In recent years, there has been an increasing incidence of floods in Northern India because there has been increased deforestation in the catchment areas.
Deforestation or forest clearance is the removal of a forest or stand of trees from land that is then converted to non-forest use.
Deforestation causes increases in temperatures and changes in the amount and distribution of rainfall generally creating a drier climate. These impacts can affect soil moisture, reducing yields in some areas and increasing flooding in others.