Change the Kinoshita high sinuosity curve parameters.
Give the freedom to change the width of the river and change the slope.
Change the size of the ground type and give the option to add the riparian vegetation.
You can also use your own line and landscape.
About a year ago I made my bachelor graduation article with the title: "Research on how to procedurally
generate a realistic meandering river in Houdini." I never uploaded this article because there is still a lot to improve but I wanted to showcase a bit of what I did for this tool. To generate this river I used both the Kinoshita high sinuosity curve and the formulas from Beck for the riverbed topography at equilibrium state.
This is still a work in process, I have a lot more planned to improve this tool!