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A flood insurance rate map (FIRM) is an official map of a community within the United States that displays the floodplains, more explicitly special hazard areas and risk premium zones, as delineated by the Federal Emergency Management Agency (FEMA). [1]
Adamsville, never rebuilt after being largely destroyed by a flood.; Alamo Crossing, Submerged in Alamo Lake. [8]Aubrey Landing, flooded during the formation of Lake Havasu.
Floodplains of the United States, areas of land adjacent to a stream or river which stretch from the banks of its channel to the base of the enclosing valley walls, and which experience flooding during periods of high discharge.
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. [3]
A Special Flood Hazard Area (SFHA) is an area identified by the United States Federal Emergency Management Agency (FEMA) as an area with a special flood or mudflow, and/or flood related erosion hazard, as shown on a flood hazard boundary map or flood insurance rate map. [1]
Floodplains of North America, areas of land adjacent to a stream or river which stretch from the banks of its channel to the base of the enclosing valley walls, and which experience flooding during periods of high discharge.
This list ranks the top 150 U.S. cities (incorporated places) by 2024 land area.Total areas including water are also given, but when ranked by total area, a number of coastal cities appear disproportionately larger.
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".