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Floodplain width

Field name = [FP_WIDTH]
Width of the floodplain at an elevation of two multiples of bankfull depth, a common floodplain.
 
 
Figure 1. A sketch showing the location of the active floodplain within a valley that contains a small stream at summer low flow.
The spatial extent of the floodplain is determined by an elevation above the channel in units of bankfull depths or by an absolute elevation, and by the search radius (of valley elevations) adjacent to the channel.
 
See NetMap's full online Technical Help. and  http://www.hydrol-earth-syst-sci.net/15/2995/2011/ .
 
And see floodplain polygons and floodplain/valley floor elevations in the Portal.
 
 
 
 
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