The Free-flowing River Toolbox for ArcGIS Desktop is a tool to conduct a Free-flowing river analysis (FFR) - replicating the methodology described in Grill et al. (2019): Mapping the world's free-flowing rivers. The study can be downloaded at this link:
https://hydrolab.io/wom/Grill et al 2019-Mapping the world's free-flowing _Author copy.pdf
The original source code that describes the methodology, as well as global data is available at this link. However, the user is encouraged to use the newer, more flexible FFR Toolbox that can be launched from a Geographic Information System.
A tutorial, including video guidance, is provided to guide the user through the installation and the use of the tool at this page.
There are two different versions:
The original version covers the entire Mekong River basin. It can be downloaded from this link:
An alternative version has been developed to focus the analysis to the Lower Mekong river basin. The link to download this version is here: