Compared to drought, a smaller area is affected by large scale flooding. However the loss in terms of lives and property is much higher. Usually heavy rainfall combines with some other factor(s) to lead to destructive flooding.
EAST
Assam - Brahmaputra and Barak valleys
Manipur - central districts
Tripura - west
West Bengal - Duars, Hugli basin, areas adjoining Ganga and Damodar
Bihar - Ganga valley, Kosi valley
Orissa - central coastal districts, lower Mahanadi basin
Jharkhand - Damodar valley

NORTH
Uttar Pradesh
- Ganga floodplains, Ghaghra, Gomti, Sharda, Rapti basins
Punjab - Satlej-Ravi basin
Himachal Pradesh - valley
Jammu and Kashmir - Kashmir valley
WEST
Rajasthan
- flash floods along Luni, Chambal
Gujarat - Lower Mahi, Narmada, Tapi
Maharashtra - lower Wainganga, Penganga
SOUTH
Karnataka - upper reaches of Tunga, Bhadra
SOUTH
Karnataka - upper reaches of Tunga, Bhadra
Andhra Pradesh - lower reaches of Krishna, Godavari, north coastal districts
Tamil Nadu - Kaveri delta
Kerala - along hills in west flowing rivers