This paper addresses a common problem in hydrometric science – specifically, how we relate stage to flow through meandering compound overbank channels full of terrestrial vegetation. Extrapolation of flow resistance factors to flood stage for the purpose of rating curve extrapolation can be improved by developing a relation between the velocity below the canopy and the depth-averaged velocity.

http://www.sciencedirect.com/science/article/pii/S0309170817301240?via%3Dihub