Delineate Streams and Catchments Super Fast with HatariUtils' Online App

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‪@hatarilabs‬ has interesting free online apps: HatariUtils. This video reviews the Watershed Delimitation tool, which can be used to derive the stream network, main river and catchment boundary from an uploaded digital elevation model.
HatariUtils: utils.hatarilabs.com/
HatariLabs: hatarilabs.com
#watershed #gis

Опубликовано:

19 янв 2024

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Комментарии : 12

@SpaceSweeper 6 месяцев назад

Thanks for sharing this

@Respect-sf4tm 6 месяцев назад

Wow. this is even easier than HEC-HMS. So, it will show every small channel on the uploaded DEM? Or can we set so that it only shows main and tributary rivers only?

@nvrumi 6 месяцев назад

Thank you for sharing this. It is interesting, although I prefer to have utilities that run locally. If you know of such utilities, I would appreciate you sharing them. I'm a surface-water hydrologist and started using QGIS just a few months ago. It is a very useful tool and I am enjoying learning my way around it.

@HansvanderKwast 6 месяцев назад

Best is to use the workflows in QGIS. See this RU-vid playlist: ru-vid.com/group/PLeuKJkIxCDj2Gk0CkcJ-QeviE41aMZd-5&si=Wn72VozYnmqjBo01. There's also the book QGIS for Hydrological Applications that guides you through the steps: locatepress.com/book/hyd2

@Respect-sf4tm 6 месяцев назад

HEC-HMS to me is very good for basin delineation.

@clemencemligo9667 3 месяца назад

Hi specialist, can you provide a better and easier method to delineate catchment areas for roadside drainage, let say I have a road being constructed and I want to know the catchment area contributing to the flow to the side drains which are normally located on the sides of the roads.

@HansvanderKwast 3 месяца назад

Many of the stream and catchment delineation procedures in QGIS or Python are scale independent and can be used for your case. It depends on the detail of your DTM/DSM, computing power and size of the area. Check the algorithms from PCRaster, GRASS, WhiteboxTools or SAGA used in this playlist: ru-vid.com/group/PLeuKJkIxCDj2Gk0CkcJ-QeviE41aMZd-5&si=7tYepKHXFnTEw8Vf

@jakemercado2134 2 месяца назад

When i download na data result theres no .shp file in the downloaded files. Why?

@nbrahmareddy7690 6 месяцев назад

Wonderful sir, can i create same type of app?

@HansvanderKwast 6 месяцев назад

The app uses PySheds in the backend. Probably you can make an app like this. Maybe check with Hatari Labs.

@ednah14 6 месяцев назад

Is it global dataset

@HansvanderKwast 6 месяцев назад

You can upload your own DEM. In the first example I've used SRTM 1-Arc Second. Indeed global data. You can download it with the OpenTopography DEM Downloader plugin: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-EMwPT7tABCg.htmlsi=tUe8-XHPzBeAwUq1