I hope this will help you with hydrological research/studies. I found many issues with errors when trying to use HEC-GeoHMS, so I created a GIS tool that automates all of the steps from initial basin delineation, downloading the data (soils, land use, impervious coverage), estimating the parameters, and putting everything in a .BASIN file for directly importing into HEC-HMS. You literally just need to input a watershed boundary, select which methods you want to use (SCS CN, Green & Ampt, Clark, Muskingum, etc.), and the tool does everything else for you. Of course, parameters must be calibrated, but this gets you the initial HEC-HMS basin model set up with the click of a button.
Right now the automated downloads work for the continental U.S. and have been verified for ArcGIS Version 10.7. I can help with technical questions a bit, but most everything should be in the User's Manual and the article below. If there is a lot of need for a different ArcGIS Version, I can try to work on that when I have some free time, but if someone knows how to code in ArcPy (it should be pretty straight-forward to update for new versions), please feel free to modify the code and re-upload to GitHub for the community to use.
I hope it helps you!
https://github.com/cvcastro/HMSPrePro
https://www.sciencedirect.com/science/article/abs/pii/S1364815219308291
(Please cite if you use this tool in your studies).
- Cyndi
** Please list location of study and ArcGIS Version. If there is a lot of need, I can optimize code to be international and/or for different versions of GIS. Please comment here.**
** Please list location of study and ArcGIS Version. If there is a lot of need, I can optimize code to be international and/or for different versions of GIS. Please comment here.**
Study area : NEPAL, ArcGIS version 10.2 Cynthia Castro I highly appreciate your effort. Wish you all the best!
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