This model is an approximate implementation of the model described in
Stark CP 1994 Cluster growth modeling of plateau erosion. Journal of Geophysical Research, 99, 13957-13969.
which combines invasion percolation, diffusion-limited aggregation and Eden growth to simulated gullying erosion at a plateau edge.
Click on the image to download and save the model NetLogo file. You will need to install NetLogo including the gradient extension to run this file.