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Tujunga Wash is an example of a concrete flood control channel. Flood control channels are large and empty basins where surface water can flow through but is not retained (except during flooding), or dry channels that run below the street levels of some larger cities, so that if a flash flood occurs the excess water can drain out along these ...
Tujunga Wash is an example of a concrete flood control channel. Flood control channels are large and empty basins where surface water can flow through but is not retained (except during flooding), or dry channels that run below the street levels of some larger cities, so that if a flash flood occurs the excess water can drain out along these ...
The flood water is then diverted to the fields. This may be done by free intakes, by diversion spurs or by bunds, that are built across the river bed. The flood water, typically lasting a few hours or a few days, is channelled through a network of primary, secondary and sometimes tertiary flood channels.
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] The soils usually consist of clays, silts, sands, and gravels deposited during floods.
Technical definitions. A simplified definition of wetland is "an area of land that is usually saturated with water". [ 12] More precisely, wetlands are areas where "water covers the soil, or is present either at or near the surface of the soil all year or for varying periods of time during the year, including during the growing season". [ 13] A ...
A coalition of environmental groups has withdrawn support for the L.A River Master Plan over differences with its recommendations for uplifting the profile of the concrete flood control channel ...
Rain gardens, also called bioretention facilities, are one of a variety of practices designed to increase rain runoff reabsorption by the soil. They can also be used to treat polluted stormwater runoff. Rain gardens are designed landscape sites that reduce the flow rate, total quantity, and pollutant load of runoff from impervious urban areas ...
Column: It's flooding in Southern California. 85 years ago, the damage was way worse. Gustavo Arellano. January 11, 2023 at 5:00 AM. Water rushes through a flood-control channel Tuesday in the ...