Calculate new reach diameter from the Manning number of the cross section in the first
(upstream) grid point, and save this diameter to the results list.
Namespace:DHI.Mike1D.Mike1DDataAccess Assembly:
DHI.Mike1D.Mike1DDataAccess (in DHI.Mike1D.Mike1DDataAccess.dll) Version: 16.0.0.0 (11.1.1.1111)