Estimation of flow resistance

Alterra WageningenUR wrote a draft report concerning the estimation of flow resistance due to short vegetation.

Three alternative methods were discussed in this report which result in other values for the flow resistance than the current method used by Rijkswaterstaat. The objective of this project is to test this current method for calculating the flow resistance of vegetation in ‘de Uiterwaarden’ and process the results of this research in a final report and a in a recommendation to EL&I (Economics, Agriculture & Innovation). 

It appears that a further elaboration is necessary. This will be jointly carried out by research institutions (Deltares and Alterra) and EL&I and RWS in 2012, before publication of the report ‘Exploring flow resistance’. This is necessary because of the importance of water safety and the natural values of the river.