Hydrological surface monitoring and river discharge using multi-sensor satellite observations in the McKenzie Delta

Surface water extent were estimated from 2000 to 2015 using MODIS Terra reflectances (8-day mosaic) at 500 m of spatial resolutions based on the Sakamoto et al. (2007) approach. Water levels were estimated using radar altimetry data from ERS-2 (1995-2003), ENVISAT (2003-2010) and SARAL (2013-2016). 22, 27 and 24 virtual stations were built under the ground-tracks of these missions on their nominal orbit using the Multi-mission Altimetry Processing Software (MAPS) (Frappart et al., 2015). Monthly surface water storage changes were obtained combining the two former datasets following the approach proposed in Frappart et al. (2006; 2012) on the common period of availability of the datasets.