Topographic Wetness Index (TWI) in ArcGIS

Topographic Wetness Index or Compound Topographic Index
Topographic Wetness Index (TWI) provides an alternative for understanding the spatial pattern of wetness and upslope contributing areas. It is commonly used to quantify topographic control on hydrological processes.

[AliAlzahrani]

This is the best educational channel .. Thank you so much

[assadullahrezayee]

I found this channel very useful and effective, Could you please make a video for finding the best route for a linear shapfile, like the best route of an Electricity Network Transmission from the A point to B point. thanks in advance.

[ameenabdulbarr]

I'm really learning alot from you thanks

[TeresaIriarte-nz]

Is it based on any scientific article? Could you provide the source?

[debolinadutta]

During the radian of slope, no matter how many times I do the raster calculator, it always not happening. For this I can't proceed further

[justinquarshie]

I have been following your good work from time to time
I'd like to know
What is the spatial resolution of your DEM data?
Also, how do I create or get a higher resolution DEM like 10m?

[luayal-obaidy]

Very good ...thsnk you...
Please, can you show how to assess the landslide susceptibility using frequency factor ?

[mbargamangajeanmarievianni]

Thanks. Pkease what is the Formula for radiant of slope? Why is slope in degree instead of percentage rise?

[sadman]

Great.
I have a question, is slope that's generated from original dem same as that generated from filled dem?

[yashuparmar]

Topographic Wetness Index should not be negative; use cell size in meters rather than in degrees.

[lukhmondadojonov]

hi, noted that your slope map in degree is not correct, instead it seems it is in %

[marymungai]

Hallo, what is the value being input in calculating radius of the slope, someone please?

[nazirhossainswapan]

How can i calculate the area of different flood susceptibility classes under different district in a flood susceptibility map?

[erricmaulana]

hello. may i ask something..
why should add +1 on the flow accumulation? what is the meaning of it or definition and purpose...
thank you

[mmmmas]

Can you provide those files for practice?

[funnylife]

Hello, how can draw and calculate water surface upstream dam and how can study the change of water surface during the time?

[terasulin]

Why tan slope function and upslope (flowacc*cell size) didnt work on me?

[funnylife]

Can we study and monitoring Dams by using RS and GIS?

[FazliRabi-ochh]

I tried many times but it gives me error 000539. anyone can help me how to solve this problem?

[funnylife]

Hello, please, I need your email for some discussion about GIS.