I haven't posted in a while because I have been too busy with last minute calculations, not to mention writing articles!The image above is an example of a sediment transport calculation and a flow frequency analysis combined to evaluate effective discharge. The sediment transport relation is from the surveyed channel cross-section (via WinXSpro and HEC-GEORAS), sediment photoanalyzed with Digital Gravelometer, and the Wilcock and Kenworthy (2002) transport equations, using a two-fraction method with the fine "sand" fraction <8.5mm, assumed Dsand of 2mm.
The flow frequency analysis is from WSC daily data, and divided into 25, 50 and 100 arithmetic flow classes.
The Qeff is c. 6.9 cms, from this and other cross-sections (peak in the blue line). Interestingly the Qbf is 27.6 cms and the Q2, 22.5. So this is a watershed where the Qe << Qbf. It didn't look unstable, and it seems that a lot of sediment is moving through but not spilling over the banks.
