Crosato and Mosselman (2009) developed a simple model to predict the number of river bars which emerge within a cross section at a certain channel width. It may be used to determine the effect of width changes on the morphological appearance.
If your site falls into the range of the tool's applicability (see notes below), enter your data to see the most likely morphological appearance.
Consider that:
References:
Crosato A, Mosselman E. 2009. Simple physics‐based predictor for the number of river bars and the transition between meandering and braiding. Water Resources Research 45: 1–14.
Hunzinger L. (2004) Flussaufweitungen: Möglichkeiten und Grenzen. Wasser Energie Luft, 96. Jahrgang, 2004, Heft 9/10, CH-5401 Baden, link to article: www.flussbau.ch/pdf/publikationen/Hunzinger_2004.pdf