Our paper on flow resistance has just been published in The Australian Journal of Water Resources. This provides Manning’s n values for four Victorian Rivers:
- Acheron River at Taggerty
- Merriman creek at Stradbroke West
- Mitta Mitta River at Hinnomunjie Bridge
- Tambo River at Ramrod Creek
The surprising thing about the results was that Manning’s n was very consistent at about 0.042 for the three gravel bed sites (Acheron, Mitta Mitta and Tambo) and for a wide range of discharges. Manning’s n for Merriman Creek was higher (0.08), probably because of the dense bank vegetation and smaller stream width. See below for a few key figures.
Ladson, AR; Lang, SM; Smart, GM; Anderson, BG and Rutherfurd, ID. (2013) Flow resistance in four rivers in Victoria, Australia. Australian Journal of Water Resources, 16(2):173-180.