paul_ollett 0 Report post Posted July 1, 2019 Hi All, I’m searching around for references on Manning’s n guidance for floodplains (excluding the open channel) based on photographic examples. A couple of references I have with example photos (both online) are: · Brisbane City Council Natural Channel Design Guidelines (Nov 2003 – Appendix C Mannings n) · Guide for Selecting Manning's Roughness Coefficients for Natural Channels and Flood Plains (reproduced over the past 40 years by a number of US agencies incl. Geological Survey and Department of Transportation) I wanted to ask if anyone has come across other guidelines based on organised photos? Many thanks Paul. Quote Share this post Link to post Share on other sites