SWMM Guide Buddy is a browser-based app offering guided, conversational help for getting started with EPA SWMM5, combined with hydraulic engineering tools including a Manning flow calculator, critical/normal depth and culvert sizing calculators, interactive charts, and 3D flow-profile visualization. It is built with React, TypeScript, Vite, shadcn-ui, and Tailwind CSS.
Released under the MIT License (see LICENSE).