With DEM as a source, I created all necessary files like flow direction, accumulation, slope, streams, watersheds, pour point etc... In my watershed (basin), I have many sub-watersheds (sub-basin) with streams and outlets at various elevations. I need to do analysis on the following two basis.
- I need to calculate for every basin/sub-basin, the drainage area at every elevation contour along the stream. Please ref figure for better understanding my view.
- I the figure there are six elevation contours (2 black top-bottom, 4 red in between) in the basin/sub-basin. In the figure, outlet is at the bottom elevation. Now I want to change outlet to all above elevations along the stream. And for each elevation point outlet along the stream, I need to calculate drainage area and volume.
I am trying various options with ArcGIS, Global Mapper, AutoCAD, Surfer, MicroStation and others...
Please give me some idea in doing this watershed analysis with less effort with any of the above said software/tools/extensions/toolbox with better accuracy.