Flow-R (Flow path assessment of gravitational hazards at a Regional scale) is a distributed empirical model for regional susceptibility assessments of debris flows, developed at the University of Lausanne. It was successfully applied to different case studies in various countries.
The model was also found relevant to assess other natural hazards such as rockfall or snow avalanches. It allows for automatic source area delineation and for the assessment of the propagation extent. The choices of the datasets and the algorithms are open to the user, which makes it compliant for various applications and dataset availability.
Flow-R is now available free of charge for Windows and Linux. Any use is allowed, there is no limitation. Flow-R is Matlab-based, but you can use it as a stand-alone thanks to the Matlab Compiler Runtime available on the download page. Any user of previous versions is strongly recommended to upgrade to the last version.
When citing the model, please refer to: Horton, P., Jaboyedoff, M., Rudaz, B., and Zimmermann, M.: Flow-R, a model for susceptibility mapping of debris flows and other gravitational hazards at a regional scale, Nat. Hazards Earth Syst. Sci., 13, 869-885, doi:10.5194/nhess-13-869-2013, 2013. The paper is in open access.
When you need support, please first read the FAQ section and the reference paper. Many aspects are covered in terms of methodology and practical details. When you don't find the relevant answer, you can contact us. We can also provide expertise and make intensive computation on a cluster for a country-scale map production for example.