location == ESTRY Control File (.ecf)

command == Read GIS IWL

description == Used to set the initial water level within a 1D channel or node at the start of a simulation.

wiki link == https://wiki.tuflow.com/TUFLOW_Empty_Files#ESTRY_Control_file_.28ECF.29

manual link == https://docs.tuflow.com/classic-hpc/manual/2025.0/Boundaries-InitialConditions-1.html#IWL-3