10/8/2023 0 Comments Hec ras etcThe data consisted of flood plain cross sections and reach lengths, which were located to coincide with field surveyed cross sections of the channels being restudied. HEC-RAS GIS Import File Creation (Pre-Processing)ĪrcView with 3-D Analyst and a new extension (GIS StreamPro) were used to extract data from a Triangulated Irregular Network (TIN) that represents a watershed being restudied for the National Flood Insurance Program (NFIP). Flood Plain Determination using ArcView and HEC-RAS
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