Floodplain

Anabranch (secondary or flood channel) Position: Floodplain   Form Pattern of coexistent multiple-anastomosing channels (repeated bifurcating and rejoining) with low...

Chute cutoff Position: Floodplain   Form Straight/gently curved channel that dissects the convex bend of the primary channel, short-circuiting...

Meander cutoff (neck cutoff, oxbow, billabong) Position: Floodplain   Form A meander bend that has been cut through the...

Floodout Position: Floodplain   Form Lobate/fan-shaped sand body that radiates downstream from an intersection point of a discontinuous channel...

Valley fill (swamp, swampy meadow) Position: Floodplain   Form Relatively flat unincised surface. May have ponds and discontinuous channels...

Ridge and swale topography Position: Floodplain   Form Ridges are scroll bars that have been incorporated into the floodplain....

Palaeochannel (prior channel, abandoned or ancestral channel) Position: Floodplain   Form An old, inactive channel on the floodplain. May...

Floodplain sand sheet Position: Floodplain   Form Flat, tabular laterally extensive sheets in non-levee settings with massive, often poorly...

Sand wedge Position: Floodplain   Form Sandy deposits with wedge-shaped cross-section at channel margins in non-levee settings. Typically have...

Backswamp (distal floodplain, floodplain wetland, floodpond, floodplain lake) Position: Floodplain   Form The distal floodplain, at valley margins, is...

Flood runner Position: Floodplain   Form Relatively straight depression that occasionally conveys floodwaters. Tends to have a relatively uniform...

Flood channel (back channel) Position: Floodplain   Form Low sinuosity subsidiary channel. Entrance height approximates bankfull stage. Commonly observed...

Crevasse splay (crevasse channel fill) Position: Floodplain   Form A sediment tongue fed by a crevasse channel that breaches the...

Levee Position: Floodplain   Form Raised elongate asymmetrical ridge that borders the channel (i.e. along the proximal floodplain). The...

Strath terrace Position: Floodplain   Form Typically a relatively flat, valley marginal feature that is perched above the contemporary channel...

Alluvial terrace (fill terrace) Position: Floodplain Form Typically a relatively flat (planar), valley marginal feature that is perched above...

Floodplain (alluvial flat) Position: Floodplain Form Lies adjacent to or between active or abandoned channels and the valley margin....