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Little is known on the planform evolution of gravel-bed rivers in base-level raised backwater zones upstream from dam reservoirs. The general model of river channel response to base-level rise predicts a decrease in river sinuosity. However, the observations of channel adjustments in the reservoir backwater document a narrower and more sinuous channel developed as a result of fine sediment deposition...
The effects of base-level rising upstream of dam reservoirs on in-channel sedimentation and interaction of the stored sediments with the gravel-bed channel morphology have received little attention so far. Previous studies, however, suggested that the feedback mechanism between in-channel sedimentation and bank erosion may affect channel morphology. Here, the pattern of the bar area, bank erosion,...
Despite a significant increase in the number of dam reservoirs in the world in the last century, the effects of these structures on the evolution of river channels above them are poorly understood. Constructed in 1997 in the Polish Carpathians, the Czorsztyn Reservoir (CR) has raised the base level of the single-thread, gravel-bed Dunajec River. An analysis of five sets of aerial photographs and orthophotos...
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