Topographic Wetness Index (TWI) From DEM in ArcGIS

Topographic Wetness Index, also known as the compound topographic index, is used to quantify topographic controls on hydrological processes. Topographic Wetness Index (TWI) can also be used to characterize biological processes including forest site quality, vegetation patterns, and annual net primary production.
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▶ in this video the way of Applying TWI index in ArcGIS has been shown, Hope you find it helpful.
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[@hivaosmani2098]

Thanks. I just have a question . why there are negative values of TWI?

[@omarabdallah2912]

Why it is necessary to change the unit to radians for the slope and how do we know that the unit of the slope is not in radians?

[@abdulwafi7659]

hello ... can i know why slope is multiple by (1.570796) at raster calculator . what mean of that value ?

[@qacemkhezami8517]

degree to radian

[@kimberlyarayaguzman1677]

Hello! SAME QUESTIOOOON! Please help. Why do U use 1.570796 and 90??

[@rsgis6997]

Hello
These are the index numbers used

[@류호익-w2s]

3.141592/180 same that