Biophysical Characterisation of Fluvial Corridors at Reach to Network Scales - Fluvial Remote Sensing for Science and Management - page 250

New floodplain polygons

Eroded polygons

Floodplain boundaries
Hydrographic polygons
Infexion points of bends
(a)

160

0 320 Meters

(b)

N

0 1750 3500 meters

400000

Volume stored in the point bar
Volume reintroducted by erosion

300000

200000

100000

0

− 100000

− 200000

− 300000

23579121314151617181921222324252627282932
Bend code

(c)

Figure 11.8 Sediment budget of the Ain river between Priay and Chazey between 1971 and 2008 combining information from
LiDAR imagery and aerial photographies : a) Location of the studied bends, b) Example of the Villette reach showing detailed
mapping of the relative DEM and eroded/constructed polygons built at the meander bend scale. c) Graphic values per bend of the
sediment budget of the reach between 1971 and 2008 from bend 2 (upstream) to bend 32 (downstream).