Topographic Wetness Index

Ali Mulla
Ali Mulla

December 20, 2024

Topographic Wetness Index

I clipped a 10-meter resolution digital elevation model to the extents of a tract of Coronado National Forest in Southeastern Arizona. I then used hydrology tools in ArcGIS Pro to fill sinks, calculate flow direction, flow accumulation, and slope. Lastly, I calculated Topographic Wetness Index from the inverse function of adjusted flow accumulation divided by the tangent of slope.

Data Source:

U.S. Geological Survey, 20240416, USGS 1/3 Arc Second n32w110 20240416: U.S. Geological Survey.


Plug-ins used

hydrologyraster calculatorSpatial analyst

tags

Digital Elevation ModelHydrologyTerrain Analysis

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