> For the complete documentation index, see [llms.txt](https://world-wildlife-fund.gitbook.io/free-flowing-rivers/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://world-wildlife-fund.gitbook.io/free-flowing-rivers/tools-and-training-materials/toolbox.md). # Toolbox

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](https://hydrolab.io/wom/Grill%20et%20al%202019-Mapping%20the%20world's%20free-flowing%20_Author%20copy.pdf) The original source code that describes the methodology, as well as global data [is available at this link](https://figshare.com/articles/dataset/Mapping_the_world_s_free-flowing_rivers_data_set_and_technical_documentation/7688801). However, the user is encouraged to use the newer, more flexible FFR Toolbox that can be launched from a Geographic Information System. ### Tutorial A tutorial, including video guidance, is provided to guide the user through the installation and the use of the tool [**at this page**](/free-flowing-rivers/lower-mekong-free-flowing-river-assessment/2-getting-started.md). ### Download the tool There are two different versions: The **original version** covers the entire Mekong River basin. It can be downloaded from this link: {% embed url="" %} An **alternative version** has been developed to focus the analysis to the Lower Mekong river basin. The link to download this version is here: {% embed url="" %} [
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