In this file you will find the scene from the tutorial I did called "Muddy River"
Box of Goodies: http://thenatureacademy.blenderguru.com/sq/8218-box-of-goodies
Website: http://nbrunner.wix.com/prebeo-studios
View the tutorial: https://www.youtube.com/watch?v=Z_mqcwhaOwI&list=UU3zh5zWCjQpznotm5mYXmjQ
Very beautiful scene, Nick. Regards.