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Department of Geography Hydrology and Climate

Whitebox Geospatial Analysis Tools

What is Whitebox GAT

Whitebox GAT is an open-source GIS software package developed by John Lindsay. Many of the functionalities of the former Geasy software, developed by Jan Seibert, are now included in Whitebox GAT. A few examples of Geasy tools that can be found in Whitebox GAT are:

  • MDInfinity flow accumulation (Seibert and McGlynn, 2007).
  • MDInfinity side separated contributions to a stream (Grabs et al., 2010).
  • Medain Upstream Area (McGlynn et al., 2003).
  • Downslope Index (Hjerdt et al., 2004).


Whitebox GAT can be downloaded from the website of the University of Guelph, Centre for Hydrogeomatics:


Grabs, T. J., Jensco, K. G., McGlynn, B. L. & Seibert, J. (2010). Calculating terrain indices along streams - a new method for separating stream sides, Water Resources Research, 46, W12536

Seibert, J. and McGlynn B. L. (2007). A new triangular multiple flow direction algorithm for computing upslope areas from gridded digital elevation models, Water Resources Research, Vol. 43, W04501

Hjerdt, K.N., McDonnell, J.J., Seibert, J. Rodhe, A. (2004). A new topographic index to quantify downslope controls on local drainage, Water Resources Research, 40, W05602, doi:10.1029/2004WR003130.

McGlynn, B.L., J.McDonnell, M.Stewart and J.Seibert (2003). On the relationships between catchment scale and s