Estimate Topographic Wetness Index (TWI) using Model Builder | ArcGIS

Topographic Wetness Index (TWI) helps to calculate, at which part of terrain water will accumulate with reference to elevation differences.It is brief video tutorial on estimation of Topographic Wetness Index (TWI) using Model Builder in ArcGIS. TWI Model Builder completely automate the process to get the result faster, run for multiple times or for multiple regions easily.

[@manglem10]

Nice one very useful

[@TerraSpatial]

Thanks a lot Mr.Manglem

[@mahmoudabdelrahman]

in TWI, We do not get the slope from the Flow accumulation layer, it should be from the dem itself

[@QiXin-sd3ud]

i think so

[@QiXin-sd3ud]

And the dem should be filled to do the flow dir,right?