Hurunui River
Also known as: Maori Gully
Short distinctive gorge; North Canterbury high country; braided reaches
Is there water?
Whether there is a river here on your dates, and what kind of water it is.
Lake Sumner-fed plus rain; Maori Gully low ~15 cumecs, cruisy 25, standard 30-40, Grade 4 above 100 (gauge at Mandamus)
Year-round navigable flows
Year-round; commercial rafting typically summer. Confirm operator dates.
Cool water; wetsuit recommended; not glacier-cold
Rain-driven spikes push Maori Gully to continuous Grade 3/4; check Mandamus gauge
Grade & who can come
A river changes grade with its level. These grades describe a normal flow - in flood the same run is harder, and often a different run entirely. Check the gauge before you commit.
Maori Gully Grade 3 (II-III overall); Grade 4 at high flow (>100 cumecs); commercial raft Grade 2-3
Kayak; rafting; packraft; jetboat
Beginners on Upper Hurunui (I/II); intermediates on Maori Gully (III); commercial raft for families
Classic Canterbury Grade 2-to-3 stepping stone; families/first-timers on commercial raft; road-accessible
The run
Cheesegrater - 1.5 m ledge, bank-to-bank hole conveying left into undercut bank; Simon's Hole (retentive); Bum Rock; The Elevator; Magic Roundabout whirlpool
Cheesegrater undercut left bank (packrafts wedged here); Simon's Hole retentive - most avoid; drops inspectable/portageable at low flow
Maori Gully (III); Upper Hurunui Lake-Sisters-Jollie Brook (I/II); Hawarden Gap (II+); commercial raft upper reach ~20 km
Popular training run for Christchurch/Canterbury paddlers; commercial raft and jet-boat traffic
Access & shuttle
No permit for private paddling; commercial raft and jet-boat concessions on river. Confirm concession holders.
Permits and operators change - confirm before booking.
Road access via Lake Sumner Road; Maori Gully put-in at Seaward River confluence; unmarked take-out where road clears the kanuka (steep steps down)
Short road shuttle along Lake Sumner Road; hubs Hanmer Springs / Christchurch
Day trip; DOC huts in upper catchment (Lake Sumner area); Hanmer Springs accommodation
Whitewater kit and a reliable roll for higher flows; limited mobile coverage in gorge
Hanmer Springs; Christchurch; Waikari/Hawarden
Hazards & exits
Cheesegrater undercut; grade rises quickly with flow; jet-boat traffic - be visible
Road parallels much of the valley; egress reasonable; gorge sections more committing
Independent for kayak; guided commercial raft available
This profile is desk research, compiled from public sources - not a first-hand river run report. Coordinates are approximate.