Watershed Delineation in ArcGIS | How to create Drainage Map

[@creation4887]

Thank you so much It's a very useful and clearly understood

[@manasranjanmahanta2248]

thank you..its very helpful

[@giorgized]

Thank for this video! 👍

[@saniaparveen9428]

Great Job.. Thank you for your effort...

[@anirbanmondal8895]

Best Session

[@luayal-obaidy7568]

Hello my Dear, thank you very much for this good explanation video.

[@resolvetec]

the classification of the flow Accumulation isn't clear enough. in inputting the break value for the classification, what should one keep in mind considering the already existing values? Like you said "This value depends on your location and DEM Data". Please, clarify.

[@chandrimaghosh3638]

F

[@riturajbg7]

This is a question I also had. AFAIU, flow accumulation is minimum the number of pixels or cells from which if flow is accumulated, a stream is formed, or the software recognizes the formation of a stream. In a relatively plain area, a well defined stream will be formed when a flow from a lot of cells accumulate. But in regions where you have greater terrain ruggedness or undulations, such as in high mountains, a small number of cells will accumulate enough flow to form a stream. Now it is from experience that one knows what range of that particular value should be entered to get a well defined and connected network. In the video at 01:19 we can see that at first when the flow accumulation raster was generated, the cell value was very high. So the software will not identify any smaller stream where a lesser number of cells contribute to the flow, but as sooon as it was reduced to 5000, more number of streams were identified. Hope this helps a bit. Please note I am also new to this.. Learned people may correct me if I'm wrong.

[@zermechi]

Thank you very much ! specially was show step by step zoom on each step end ,excellent more interesting.

[@GISRSSolution]

Welcome

[@-nith3368]

Useful 👍

[@lordtea]

2:03 where u get that 5000

[@jurarud]

Thank you so much, i can do by follow you. great!!

[@faisalrz87]

Thanks to the video..btw, how to identify class size during flow accumulation. in this video you specify value = 5000

[@arkabhiroy578]

What is the meaning of that 5000 in raster calculator

[@aryakrishnan1582]

Wonderful

[@GISRSSolution]

Thank you

[@samueljohnson7354]

God bless you

[@GISRSSolution]

Thanks

[@tanveerrahman2164]

great video. AS you have mentioned the break values will be different for different dem, can you please specify how to determine the break values?

[@rishikashaw8574]

V nice

[@chinojordan6485]

Thanks. Great work. I have a question. Can I draw the Drainage manually ?

[@adiletg]

thank you

[@noelaaligrah6066]

Thanks for the video. Please how did you do the final portion to get the extract?

[@psnanda_0797]

Extract using mask and input layers are watershed and dem! thats it.

[@danagutu2693]

Good job!,you promised to give a link on how to download DEM in the beginning,please do so

[@GISRSSolution]

Please check videos. You will get it.

[@Mona-fn7rt]

How to recognize 3 parts or stages of a river basin?

[@DessalewDefersha-qj2dr]

Thank you so much for your great video. Flow direction in my Arc GIS 10.1 only show two values max and min as DEM, How can I fix it.

[@zamilmahmudshafayetupm4081]

good video. can you give any idea how can a large river basin like Brahmaputra or Amazon be delineated?

[@kyawthet1285]

Thanks

[@nelsonkayode106]

Please, I want to do a surface runoff analysis. Any hint?

[@rutujabapat6378]

Hello sir ,please carify how to break down the value for specific study area. my study area is Rajapur Konkan

[@adedolapoadeusi568]

Great video,please can the DEM file used be downloaded? If it can please try to always put them in the description,for me I'd love to download them and practice

[@sudarsanashenoy1187]

Why that specific polygon was selected for watershed

[@iyanh09]

may i ask where do you get the watershed boundary shapefile? my area is in ningbo_china hence I can't get it from USGS website

[@GISRSSolution]

You need to create watershed boundary. Follow the instructions and you will understand. Thanks

[@yks_257]

where that extract part came?

[@veinheusion]

How you consider break value , plz clarify ?

[@epotea]

how about with multiple watershed in one Mining Rights

[@JoMP4102]

how do you determine the break value base on location?

[@user-rv2tn9qx2b]

How is break value determined ?

[@riasadislam2664]

Did you use normal DEM to do this map

[@GISRSSolution]

Yeah.

[@ameenabdulbarr8342]

I recently downloaded from Global Surface water and the data collected cant be filled in the FILL toolbox with error what can I do about it

[@shainamir4687]

Wonderful.... Plzz help me to chose a topic for my PhD. Suggest me a good topic related to hydrology and it should include Remote sensing and GIS PLZZ suggest me. Thank you in anticipation

[@GISRSSolution]

well, you can consider following topic for your Phd ; 1. Remote sensing and GIS-based hydrological modelling for flood risk analysis of (your country) 2. Identification of Groundwater Potential Zone using Remote Sensing and GIS and AHP Technique 3. Decision support system for watershed runoff assessment 4. GIS Based Management System for Flood Forecast Applications in (your country) 5. Monitoring, assessment and prediction of drought using multi-sensor remote sensing data and GIS Techniques There are many more topic you can select for your hydrological research using GIS and RS. Wish you all the best.

[@shainamir4687]

@@GISRSSolution thank you so much Can I found detailed description about these topics anywhere??? Like how to start how to initiate how to accomplish these types of work??? Plzz reply

[@psnanda_0797]

Working properly🗾🧭

[@kunaldeo1725]

hey bro i want to do flood analyssis will u help me

[@GISRSSolution]

Initially you may follow this video kzbin.info/www/bejne/rGm4aqOKmtOfra8 Later I have a plan to make another video on flood analysis.

[@BundiGirlsCollege]

I am getting error 000539 on performing algebra. How do I overcome this. In flow direction i set the parallel processing to 0.Please help

[@Ruchitakataria]

Can you please provide the written steps of watershed.

[@mijanurrahman3857]

at the end which extract to mask is not clear. Please clear it.

[@GISRSSolution]

Very easy process. I extracted from main DEM and Mask according to Watershed/AOI...

[@ari_tits3142]

@@GISRSSolution still didn't understand

[@engr.andreakatecastaneda]

How did you extract it? you had shortcuts huhu

[@anikchandrabanik91]

I needed to create a drainage density map of 1990. What are the way to create such map for Bangladesh?

[@GISRSSolution]

First you have to download DEM data of 1990 of Bangladesh. Then prepare drainage map following this video or another video on Stream order. Then you can easily calculate stream density using equation like Stream density = sum of stream length/Area. You can check my Stream order map and stream density calculation tutorial. Hope you can understand easily. Thank you.

[@anikchandrabanik91]

@@GISRSSolution How to collect dem data before 2000 (i.e 1999 or before).As we know ASTER or SRTM dem is available after 2000).

[@junaidah8003]

I dont know why i failed the “fill” part. Can anyone help me?

[@fatimarizwan4609]

my basin tool just gives output in one colour why is that so? I can t figure out! :/

[@GISRSSolution]

Please restart the arcmap and try again following the instructions. Thanks

[@baitullahkhan4485]

hahhhha! how did you cute such an important step of clipping or extracting export_bil4, i am very disappointing with this gesture

[@wetfire7371]

hello this is not watershed exactly. this is basin. basin and watershed is not same.

[@ahsanullahkhan8862]

Hi , what's the difference between em

[@SoilRanger]

@@ahsanullahkhan8862 watershed=perimeter of the basin. the summit of a moutain is a watershed. Basin=area defined by watershed. The Alps are the watershed, Italy is the basin