Articles | Volume 30, issue 12
https://doi.org/10.5194/hess-30-4141-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-30-4141-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Assessment of SWOT water surface elevations for flood monitoring of a narrow river ( < 50 m width)
Amal Mzoughi
CORRESPONDING AUTHOR
Department of Civil Engineering and Building Engineering, University of Sherbrooke, 2500, boul. de l'Université, Sherbrooke (Quebec) J1K 2R1, Canada
Mélanie Trudel
Department of Civil Engineering and Building Engineering, University of Sherbrooke, 2500, boul. de l'Université, Sherbrooke (Quebec) J1K 2R1, Canada
Pascale M. Biron
Department of Geography, Planning and Environment, Concordia University, 1455 de Maisonneuve Blvd. W., Suite H-1255.26, Montréal (Quebec) H3G 1M8, Canada
Guénolé Choné
Department of Geography, Planning and Environment, Concordia University, 1455 de Maisonneuve Blvd. W., Suite H-1255.26, Montréal (Quebec) H3G 1M8, Canada
Gabriela L. Siles
Department of Geomatics, Laval University, 2325 Rue de l'Université, Québec, QC G1V 0A6, Canada
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Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2026-30, https://doi.org/10.5194/essd-2026-30, 2026
Preprint under review for ESSD
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We present a new public collection of water level and wave measurements from the St. Lawrence Estuary and Saguenay Fjord in Canada, gathered using state-of-the-art instruments and the largest network ever deployed in this region. Collected to assess the accuracy of the Surface Water and Ocean Topography satellite, these data will help scientists, decision-makers, and communities better study floods and coastal changes in estuaries, especially as the climate shifts and water levels rise.
Basem M. M. Mahmoud, Emily Dickson, André Renault, Mélanie Trudel, Pascale M. Biron, Leonard S. Sklar, and Jay Lacey
Earth Surf. Dynam., 14, 175–190, https://doi.org/10.5194/esurf-14-175-2026, https://doi.org/10.5194/esurf-14-175-2026, 2026
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Herein, we introduce a new large outdoor river research facility to study how rivers change shape at near-real scales. Initial experiments on a straight channel resulted in little bank erosion even when the flow was perturbed by the placement of an in-channel artificial bar/pool. The results point to a narrow operational window for bar growth and bank mobility which informs on the initial conditions of future bank erosion experiments.
Dipti Tiwari, Mélanie Trudel, and Robert Leconte
Hydrol. Earth Syst. Sci., 28, 1127–1146, https://doi.org/10.5194/hess-28-1127-2024, https://doi.org/10.5194/hess-28-1127-2024, 2024
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Calibrating hydrological models with multi-objective functions enhances model robustness. By using spatially distributed snow information in the calibration, the model performance can be enhanced without compromising the outputs. In this study the HYDROTEL model was calibrated in seven different experiments, incorporating the SPAEF (spatial efficiency) metric alongside Nash–Sutcliffe efficiency (NSE) and root-mean-square error (RMSE), with the aim of identifying the optimal calibration strategy.
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Short summary
This study examines how observations from the Surface Water and Ocean Topography satellite can support hydraulic modelling. Using a major 2023 flood in Quebec, we compared the satellite’s water surface elevation (WSE) data with hydraulic simulations and ground measurements. The results show that satellite observations can provide valuable information for understanding floods where monitoring data are scarce.
This study examines how observations from the Surface Water and Ocean Topography satellite can...