SWATGenX

SWATGenX builds physically based watershed models for any US watershed, automatically — SWAT+ coupled with MODFLOW 6, calibrated against USGS observations.

This channel is the teaching side of that work. Every video is computed from real model output and public national datasets — NHDPlus High Resolution, PRISM, gSSURGO, and a national groundwater inventory of 28.5 million drilling-log layers. No stock animation, no invented numbers; where a figure comes from is shown on screen.

You'll find explainers on how a watershed model gets built, how surface water and groundwater are coupled, how PFAS moves from soil to river, and how the engine is parallelised — alongside shorter pieces that answer questions with data: how long a drop of water takes to cross the Great Lakes, how much rain actually reaches a river, and why there are fish in a lake they could not have swum to.

Built by Vahid Rafiei. Try it: swatgenx.com