Explanation:

Orissa

Floodings occur when an extreme volume of water is carried by rivers, creeks and many other geographical features into areas where the water cannot be drained adequately. Often, during times of heavy rainfall, drainage in residential areas are not adequate or unchecked civil development severely impedes the functionality of an otherwise acceptable drainage system. Floods cause extremely large numbers of fatalities in every country, but due to India's extremely high population density and often under development standards, a large amount of damages and many deaths occurred. Odisha has come out with a unique flood hazard atlas on the basis of historic flood inundation captured through satellite imagery.