Ground elevation of the point. Automatically generated from the channel cross-section processed data or point inspected from a DTM.
Float
RR or Material
In the 1d_WLLp check file, the relative resistance of the point. If the elevation was estimated from the channel’s processed data a value of 1 is assigned. If the elevation was provided through a point using Read MI WLL Points, RR is the material Manning’s n value divided by the channel’s n value.
In a 1d_WLLp layer being used in Read MI WLL Points, this column should either be set to:
zero (0) to force a relative resistance of 1; or
a material value (normally sourced from a GIS layer of material polygons) – the material value must exist in the .tmf file (see Read Materials File).
