Estimation of the Madeira floodplain dynamics from 2008 to 2018

The Madeira is one of the major tributaries Amazon River and characterized by a large alluvial floodplain throughout stream continuum. This study aims to better assess hydrological functioning Basin over its floodplains at both local global scales. We used semi-distributed Soil Water Assessment Tool (SWAT) model simulate water discharge daily time step resources for each compartment. A new hydraulic module routing was implemented in SWAT considering either as simple reservoir or continuum where can flow along with network. Both surface estimated L-band passive microwaves (SWAF data) digital elevation model—shuttle radar topography mission (DEM–SRTM were delineate floodplain, inputs model. On scale, amount stored between 810 ± 230 km 3 per year when are delimited SWAF 1,300 350 DEM delineation 2008 2018. Spatial altimetry (Jason 2-3) data also applied areas validate height dynamic scale. Results show that more than 60% validation points display correlation above 0.40 0.02 regardless delineation. permits us characterize spatio-temporal storage dynamics scales, it underlines importance precise delineation, before computing biogeochemical fluxes sediment yield.