I've calculated Topographic Wetness Index using pyDEM package for SRTM dataset. How one can interpret these values? And what is the interpretation of No Data values? Image is uploaded inside.
Statistics of Topographic Wetness Index in my case is like this:
Minimum=5.87, Maximum=23.82, Mean=10.516, StDev=1.704
I found few interpretations by USGS on TWI computed with TOPMODEL. Details are available here: http://slideplayer.com/slide/9605691/
Hi Dear Gajanan
TWI is one the most important factors that indicates the potential of runoff generation. In other worlds, the high values of TWI means the high potential of runoff generation and vice versa. In some models like TOPMODEL this factor is used to estimate the surface and subsurface flows. Also, in flood risk assessment this factor can be used as a fast method for identifying flood prone areas.
the best
Azizian
Is there any fixed range of topographic wetness Index as like other indices.
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