It lives, it lives!!! Mostly… 
There are 3 rivers generated on this map, one looped on itself immediately and the other 2 managed to go a good distance before dumping into the ocean.
I am going to have to do something about the rivers looping and dumping into themselves, but other than that it is looking pretty good! 
The artifacts caused by river merging are really hard to notice without zooming way in so should be pretty easy to cover up. Also need to create some delta transition as it dumps into a body of water.
Creating the river generator was an epic undertaking that I didn’t fully appreciate when I started. This block of code added 35 Functions, 2MB to the size of my blueprint, and took dozens of hours to complete. I was only able to test it 2 hours ago.
Each row corresponds to a corner of a hex used for reference for each spline point, starting with 0 in the upper right(North East) and moving clockwise to 5 at the upper left(North West). At each point in the river growth, a single tile is used as a focus for neighbor searching and river forking. The generation loops on itself until the river dumps into a water tile or another river.
I may go more into depth on this generator at a later date, but it might need its own thread.
Well I will be traveling for work next week so I won’t get much work done, but I should be around the forums. Just glad I could get this working first.