It looks a little TOO good! No offence but you got some CLEAN rivers where you model! The local river is hardly 6 feet deep on average and looks like cloudy tea, I rarely see the bottom, when I do it's truck tires, dead trees and old washing machines, bikes, odd shaped whatnot, a shoe, benches, former bridge foundations.....Other river features I've noticed are small islands with/without trees and bushes, the edges have trash, bits of paper, red solo cups, trees growing out of the bank at an angle, more dead trees laying half in the river, landowners attempts at bank control, rip-rap, docks, boats...... Sure don't look like no waterpark lazy river channel!
I'm just nit-picking, it's awesome!