Flood
Videos
A flood is an overflow of water that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are of significant concern in a
Urban flooding in a street in Morpeth, England, 2008
View of flooded New Orleans in the aftermath of Hurricane Katrina
Flooding of a creek due to heavy monsoonal rain and high tide in Darwin, Northern Territory, Australia
Flood in Jeddah, covering the King Abdullah Street in Saudi Arabia
Surface runoff
Videos
Surface runoff is the unconfined flow of water over the ground surface, in contrast to channel runoff. It occurs when excess rainwater, stormwater, meltwater, or other sources, can no longer sufficien
Runoff flowing into a stormwater drain
Surface runoff from a hillside after soil is saturated
Urban surface water runoff
Urban runoff flowing into a storm drain