Water levels Remote sensing 14 Rivers 14 Argentina 12 Floods 12 Wetlands 12 C-bands 8 Computer simulation 8 South America 8 water level 8 Banks (bodies of water) 6 Ecosystems 6 Flooded areas 6 Mean water levels 6 Microwave remote sensing 6 Microwaves 6 Model simulation 6 Numerical experiments 6 Polarization 6 Vegetation 6 floodplain 6 Astronomical tides 4 Backscattering 4 Biomass 4 Boundary conditions 4 Colonia 4 Constant discharge 4 Currents 4 E-signature 4 ENVISAT ASAR 4