Have you tried the new river generation? Let me know in the comments if you’ve spotted any weird glitches with the delta formation!
Because it was designed for version 1.5, it is considered outdated for current versions of HOI4. To make maps work in 2024–2026, modders typically have to use external tools like Astro's HOI4 Map Gen Tools to fix output files or manually update common game files using Notepad++ . map gen 2.2