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We start will now add the values for the boundary conditions by importing the boundary conditions and lateral corresponding data from there csv files (all constants)a csv file with the function ImportBoundaryConditions Image Added. The information regarding the lateral sources can be similarly imported using the function ImportLateralData Image Added. In both cases, for the sake of simplicity, we have assumed that they have constant (not time dependent) values.

ImportBoundaryConditions(rootPath + r"\boundaryConditions.csv", flowModel)
ImportLateralData(rootPath + r"\laterals.csv", flowModel)

We continue by setting the roughness. Starting with the main roughness section. The following code sets the default roughness of the main roughness section to StricklerKs with a default value of 30.

SetDefaultRoughness(flowModel, "Main", RoughnessType.StricklerKs, 30)

Now we create a new roughness section and "FloodPlain" and make cross-sections "prof_SW2815-SW2870_Bo" and "prof_D20060515-DP-295" use it. To declare roughness sections on cross-sections, you need to declare the start and end distance along the cross-section. Because we want these cross-sections to only use our new "FloodPlain" section we use the min and max of the cross-section profile using the "GetMinYMaxYofCrossSectionProfile" function.

sectionFloodPlain = AddNewRoughnessSection(flowModel,"FloodPlain")

crs1 = GetItemByName(network.CrossSections, "prof_SW2815-SW2870_Bo")
crs2 = GetItemByName(network.CrossSections, "prof_D20060515-DP-295")

minY, maxY = GetMinYMaxYofCrossSectionProfile(crs1)
AddCrossSectionRoughness(flowModel, crs1, minY, maxY, sectionFloodPlain)

minY, maxY = GetMinYMaxYofCrossSectionProfile(crs2)
AddCrossSectionRoughness(flowModel, crs2, minY, maxY, sectionFloodPlain)

Now we only need to set the initial depth to a default of 3 using the following lines:

SetInitialConditionType(flowModel, InitialConditionType.Depth)
flowModel.DefaultInitialDepth = 3