Abstract: Tests of the slope‐area gaging technique at 16 sites in gravel and boulder‐bed rivers with slopes of 0.4–4% in upland Britain show that the field measurements must include detailed surveys of bed cross section and transverse ...

Abstract: Examination of the flow resistance of high‐gradient gravel and boulder‐bed rivers, using data collected in British mountain rivers with slopes of 0.4–4%, shows that there are differences in resistance variation between ...

Abstract: Existing bed-load transport formulas may overestimate the transport rate in mountain rivers by two orders of magnitude or more. Recently published field data sets provide an opportunity to take a fresh look at the bed-load ...

Abstract: A field method for measuring the flow drag force on individual boulders on a riverbed is identified and tested. Drag is determined from the momentum deficit in the boulder wake, obtained by measuring the flow velocity in ...

Abstract: Previously reported data from sandbed rivers, gravel-bed rivers and laboratory flumes are reviewed. In this technical note, the data are supplemented with data sets from two different laboratory flumes. The first data set ...