| Summary: | This master thesis deals with the morphology of mountain river channels - with structures, patterns and shapes resulting from fluvial processes. The findings are documented on the Křížový potok river channel in the Eastern Krkonoše mountains. There are several specifics which influence the evolution of mountain river channels. The first one is high elevation change and big slope of the river, which determinate the formation of typical structures, such as waterfalls, cascades and steps, often related with pools. Plane bed, riffle-pool and dune-ripple also represent typical structures of mountain river channels. Specific microstructures are represented by potholes. River channels in forested mountain basins are affected by logs and wood debris, which create local barriers where fine-grained material accumulates. In the Křížový potok river channel, a high diversity of the channel structures can be seen. The most common structures are step-pools and cascades. The stream is influenced by large accumulation of delluvial sediments and wood debris which create obstacles to the flow.
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