Buller River - One on the Murchison area gems. Fun from start to finish. The main even is Granity Rapid about 2 thirds of the way down. When the river is low it is a wide bouldery section with lots of eddies. Be aware it is shallow in places. When it is high above 150cms expect an exciting non stop big water run in the class 4 and above realm. Make sure to check out the NZ Kayak School in Murchison for beta, gear or a course.