Rivers under Ice: Evaluating Simulated Morphodynamics through a Riffle-Pool Sequence

Modeling in ice-covered rivers is limited due to added computational complexity, specifically challenges with the collection of field calibration data. Using River2D, a 2-dimensional hydrodynamic modeling software, this study simulates depth-averaged velocity and shear stress distributions under ice cover open-water conditions during varying flow small, shallow riffle-pool sequence. The results demonstrated differences distribution throughout channel increases discharge were found impact magnitude cover, while spatial remained consistent. A recirculating eddy along pool’s left bank was exacerbated potential implications for silver shiner habitat suitability. Bed did not vary significantly between open water, although differed notably. Model validation success simulating water depth velocities, estimated within reasonable margin. models provides valuable insight into seasonal changes velocities when present.