Thank you for your guides. Can I ask how to delineate multiple subbasins by using arcGIS pro? I cannot find the tool extracting stream lines and juntions from flow accumulation raster data which makes 'making lots of watersheds at once' difficult.
1. Could I edit the DAs delineated from ArC Hydro tools to represent drainage direction change? For example, changing the drainage ID numbers in drainage lines and catchment layers. 2. Is there a way to change the drainage area shape parallel to the drainage lines (not by giving an outfall point along the drainage line - this cut the DA across)? Hi, I am trying to represent an urban drainage area. I have some areas draining in the reverse to the natural slope due to sewer modifications. I tried manually editing the drainage layers generated from ArcHydro tools and then tried to extract it through HEC-GeoHMS. Though everything is merged it is not picked up by HEC-GeoHMS. Any literature or procedure that has done this would be appreciated greatly.
Hi Phil...I watched your video on creating a watershed using a DEM. I have a 2ft elevation contour feature class already created from a DEM, and want to use it as the basis for creating a watershed for a local pond here on LI. Can I do that? Do you have a video for that process?