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04/10/2012 03:42:44

Hi, I need some help in performing simple 2-D modeling. The ISIS Guides have not explained the issue clearly. In my case, basic geometric properties of a small river are available, which should be sufficient enough for building a model. However, no GIS information is available, such as DEM. In this case, can I proceed without using GIS information? Based on the ISIS 2D Quick Start Guide, it seems that ISIS requires to apply ISIS Mapper in building a 2-D modeling. Do we have to use GIS information? Do we have any simpler but more straightforward option to delineate a small river? Can we just build a model by "drawing" a river step-by-step, as we can do in HEC-RAS? Regards Yi

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