111 CH-8903 Birmensdorfchristoph.hegg@wsl.ch phone ++41 / 1 / 739 24 44 fax ++41 / 1 / 739 24 88; Swiss Federal Institute for Forest Snow and Landscape ResearchBirmensdorfComparison of bedload transport in a steep mountain torrent with a bedload transport formula. Hegg C,Rickenmann D....