Determining rivers catchments and calculating the physiographic parameters of basins is very important for hydrological studies. Catchment delineation is possible using DEM(Digital Elevation Model). With the help of DEM, we can calculate and assess many aspects of terrain and hydrological analysis.

I am an experienced civil engineer with a master's degree in water engineering. And also, I'm good at professional software, including AutoCAD, Civil 3D, ArcGIS, ArcHydro, etc. 

I can prepare the DTM of watersheds in the format of DEM using GIS and calculate all of the physiographic parameters of them that are needed in your projects, such as below:

Flow direction, Flow accumulation, Stream segmentation, Watershed delineation, Flow Path, Basin Length, catchment area, etc.