My model includes a canal and I am using a transect to represent the canal. One of the typical sections is shown in the figure. I uses the actual elevation data for the transect cross section and hence some coordinate values are negative.
1. The profile view does not show the negative portion. Is there any way I can see the full depth profile view? will there be any problem in SWMM internal calculation if I use negative value ( as shown in the figure).
2. From the transect sections, does SWMM automatically calculate the slope ( using the lowest coordinates) or it uses the section only to calculate area and wetted perimeter. I am asking this because if it considers lowest coordinates than there will be problem from double counting if I input slope through offsets.
3. I will use stage data at outfall. what is the datum SWMM considers for stage data depths given?
Thank you in anticipation.