<< Click to Display Table of Contents >> Navigation:  HydroSWMM Tutorial > HydroSWMM Tutorial: step-by-step > Alternative way of compiling a model from an Existing SWMM file > Background

In the example thus far:

 

•A drawing with the model layout was opened in HydroSWMM.

•The drawing was fixed to a coordinate system.

•An aerial photo image was loaded into the drawing.

•A model database was created (and a geodetic projection specified).

•The database was populated by capturing GIS based model elements exactly on top of the CAD model layout.

 

The step of populating the model by individually capturing the elements on top of the CAD backdrop was feasible in this case due to the small number of elements, and sometimes it is the only way when the CAD backdrop is not detailed enough or accurate enough.

 

In this section an alternative way of building a model by importing either a SWMM INP file.