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Please elaborate the problem. Do you mean like you get no output even after the processing or do you mean the output is same as the DEM? There might have been the layers generated but not displayed. Check in the layers.

@@pyzis I got the same problem: layers Flow accumulation, Flow Direction, Sink locations, Sink fill are created but empty :(

Sorry for the late reply. You can use your DEM to generate the flow direction files. First fill the DEM and compute the flow directions. There should be tools called "Fill" and "Flow direction".

You can use two of the GIS tools in conjunction. First fill the dem using the "fill" tool and then, there should be another tool called "flow direction" .

Glad it was helpful!

Yeah, You can overlay these points over the basemap if that's what you mean.

If you're talking about using built-in PowerPoint blocks or symbols for symbology, you can first save it to your device and for that, select it and save it as picture. You can directly save it as SVG too but I'm not sure if you can save it as SVG in older versions of PowerPoint. Even if older versions of PowerPoint doesn't allow direct save to SVG, you can use multiple websites to convert those image files into SVG. Adobe express allows you free conversion from PNG to SVG file types.

You can use GIS to merge those files.

The images are not actually stored in the attribute table of the shapefile, only the filepaths are stored which is then utilised to display the image. Also in GeoJson, the image attributes can be stored as a file path string but not as a direct image. At the end of the day, you need an image viewer to display the images.

To clearly demonstrate the required steps.. I thought it was very effective.

Glad it was helpful!

You can download it from the official website of USGS or from opentopography.org or from any other websites. There are many sources for the data.

Well it depends on how you want your river network. Just a main river or tributaries as well.

@@pyzis I need River as well as major triburaries. Any suggestions?

@@navin8112 I'd say approach it like a trial and error or if you have a river network shapefiles, you can use that as well.

@@pyzis yeah. I have a shape file. Thank you so much

Sorry for replying very late. You could zoom in a little bit and try. Or try importing an outlet shapefile.

Bro, I don't have much experience with hec-hms. I learned it like last year matra for my college assignment. But vannus na, I'll try to help sakdo.

@@pyzis i am finding difficulty in estimating the initial values such as k and x for rivers, and other values such as baseflow (which to select and why?, how to estimate the initial values if i am choosing constant monthlt baseflow method ,, and so on.. how can i get a starting value before i even think of optimizing by comparing with the observed values?)

Normally, X ranges from 0 to 0.3 for natural rivers and K being the travel time, depends upon the reach. Just assume suitable numbers for your reach and try optimization trial manager in hec-hms. It'll help you to get optimised value of K and X. You can do trial and error with it and tune it within the suitable range of K and X. But make sure that the optimisation doesn't give you an absurd value. And when it comes to baseflow method, it depends on many factors like if the conservation of mass in a sub-basin is a must or not, what the purpose of model is, etc.