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Step Wise Guide
What types of information will help with my floodplain restoration activities? How can I locate floodplains that have been obscured by development?
One of the major challenges in river restoration is to identify floodplains in catchments with a long history of river control. Intensive land use on valley floors often predates the earliest remote sensing: levees, dikes, dams, and other structures alter valley-floor morphology, river channels and flow regimes. NetMap's floodplain tool can be used to identify locations along valley floors where floodplains may be obscured by past development (agriculture, urbanziation, roads, dikes etc.).
Mapping floodplains can be used to identify areas where they have been obscured by developments such as diking, agriculture, urbanization and roads. See anexample how mapping floodplains was used in restoration planning.
Step 1:Go to: NetMap Fluvial Morphology Tools >Floodplain Mapping. NetMap digital watersheds contain a default floodplain prediction calculated at 2x bankfull depth. You can adjust the elevation above the channel in which to calculate (map) floodplains (1x, 3x etc.). For an example of how the floodplain tool was used for watershed wide restoration planning in Spain, go here.