How to set initial water level of channel

The water level in a channel in SewerGEMS and CivilStorm is calculated based on the flow through it and other conditions. If you need to specify a base flow from the normal river flow rate, you could add an inflow into the upstream cross section node. After computing the model, you may need to advance forward in time a bit to see the channel fill up and reach a steady state. 

If the river level is constant because of a tailwater condition downstream, you could "set" the water level by way of the User Defined tailwater option in a downstream outfall element (assuming it is the end point of your network).

Thanks!

Thanks!

This discussion has been incorporated into a wiki, for future use of other users with similar query. 

How to set initial water level of the river?