Search results
Results from the WOW.Com Content Network
These tupelo and cypress trees show the high-water mark of flooding. A floodplain or flood plain or bottomlands [1] is an area of land adjacent to a river. Floodplains stretch from the banks of a river channel to the base of the enclosing valley, and experience flooding during periods of high discharge. [2]
Fluvial terraces are elongated terraces that flank the sides of floodplains and fluvial valleys all over the world. They consist of a relatively level strip of land, called a "tread", separated from either an adjacent floodplain, other fluvial terraces, or uplands by distinctly steeper strips of land called "risers".
Water pollution occurs when water bodies, such as rivers, lakes and oceans are contaminated with harmful substances. These substances degrade the water quality and are toxic to humans as consumers and to the environment. [7] The contamination in a river can come from a point source or non-point source pollution. [8]
The old rule "Whom the water hurts, he the water stops" (Wie het water deert, die het water keert) meant that those living at the dike had to pay and care for it. This led to haphazard maintenance and it is believed that many floods would not have happened or would not have been as severe if the dikes had been in better condition. [ 7 ]
However, it is best practice within landscape engineering to rely more on soft infrastructure and natural systems, such as marshes and flood plains, for handling the increase in water. Flood management can include flood risk management, which focuses on measures to reduce risk, vulnerability and exposure to flood disasters and providing risk ...
Urban flooding can occur regardless of whether or not affected communities are located within designated floodplains or near any body of water. [1] It is triggered for example by an overflow of rivers and lakes, flash flooding or snowmelt .
Roads across the state are inundated with water, mud and debris. Multiple areas of Southern California broke rain records, with Downtown Los Angeles experiencing the rainiest summer day on record.
The flushing flow method involves partially or completely emptying the reservoir behind a dam to erode the sediment stored on the bottom and transport it downstream. [7] [6] Flushing flows aim to restore natural water and sediment fluxes in the river downstream of the dam, however the flushing flow method is less costly compared to removing dams or constructing bypass tunnels.