I’m a licensed Professional Engineer working in dam safety, hydrology, and hydraulic modeling. Most of my day job is HEC-RAS, SWMM, and emergency action plans for real dams in the Southeast. Nights and weekends I build software — mostly tools that help other engineers work faster, and the occasional simulation game when I want to think about something bigger than a single watershed.
The games on this site are free and open source. They share a single rule: every equation inside has a real-world reference. They are not research tools, but they are not toys either.
Drag-and-drop BMP palette, real SWMM and TR-55 formulas, sediment and nutrient routing, USDA soil lookup, and a sediment model that actually routes water through thirty-plus BMPs. Built because the state of practice for small-site stormwater is either a four-thousand-dollar license or a spreadsheet, and I wanted something in between that didn’t cut corners.