Thanks! The GitHub project is still available but is many years out of date now. I did this when vector tiles were new, there's now really good software package

Thanks! The GitHub project is still available but is many years out of date now. I did this when vector tiles were new, there's now really good software packages out there. Some of the ideas of cleaning and simplifying the data may still be useful though. https://github.com/NelsonMinar/vector-river-map https://github.com/NelsonMinar/vector-river-map