Rafting New Zealand are proud to offer the ultimate Raft Fishing Tongariro fly fishing trips. Fly Fishing and Rafting on the spectacular Upper Tongariro River is the ultimate Fly Fishing adventure. This water opens for angling and fly fishing trips every year on the 1st of December. It is only really accessible via the river which means you get into untouched water to fish for resident and spawning fish. December and January are popular months for this water activity as the upper river holds huge numbers of trout at this time of year due to late-spawning fish from Lake Taupo.