Mainstream Major tributary River reach length (km) chainage of river confluences (km) chainage of gauging/virtual stations (m) gauging/virtual data sources Number of ICESat-2 cross sections Calibrated parameters RMSE for Calibration ( m) RMSE for Validation (m)
Amazon Ucayali 139.076 53.53 32.353 Sentinel-3B 18 (10.1, 5.5, 0.08, 49.8) 0.62 0.84
Amazon Negro 141.22 96.32 73.19 Jason-3 30 (37.88, 15.64, 0.03, 47.75) 1.2 3.14
Amur Zeya 157.165 95.68 76.78 Sentinel-3B 30 (3.10, 19.97, 1.00, 14.46) 1.66 0.83
Ganges Ghaghara 171.74 91.10 68.22 Jason-3 26 (28.29, 11.66, 2.10, 48.76) 1.36 2.05
Missouri Yellowstone 93.82 54.21 43.159 In-situ 21 (4.12, 6.34, 1.343, 41.62) 1.04 0.85
Niger Benue 173.146 144.19 114.16 Sentinel-3B 18 (11.06, 10.14, 1.95, 47.98) 0.96 3.02