Salmon redds (salmon nests) prediction/modeling tool. Based in Python, the tool can read data from a CSV file regarding the parameters of a river/spawning area and attempts to create a model with given parameters. This model can then be tested against other spawning sites and be refined. This prediction tool is meant to give a better idea of salmon spawning preference to a given site. Originally created for Master's Thesis in Computational Physics at University of California, Santa Cruz. The tool helped investigate the benefit of the process of adding gravel to a site to make it more desirable for salmon spawning. Special thanks to Joshua Deutsch for guidance regarding computational modeling and Joseph Merz for data and explanation on the salmon spawning process.