TTGA: Topological Tools for Geomorphological Analysis

TTGA is a tool which helps the analysis of river systems, in particular, braided rivers and estuaries. The focus of the tool is the computation of river networks from a digital elevation model (DEM) of the river bed. Such a river network can then be used as input for further analyses, such as computing the length or average elevation of channels.

TTGA is available for Windows and Linux systems, and is free software licensed under the GNU General Public License version 3.