The Hawarden Gap is a bit of an under-utilised gem. 12 km of Class II open gravel channel through rugged farmland has plenty of play features to practice eddies and technique before the valley constricts at the Hawarden Gap where the real fun begins. The river is aligned such that a norwester is funneled up the river and can be pretty extreme. So it’s a fair weather run.
Head north up State Highway One from Christchurch, when you get to Waipara, turn left and head up State Highway Seven. Turn left at the past the tea rooms in Waikari and head down the Hawarden Waikari Road. Straight through Hawarden and along Horsley Down Road, which curves to the left to become Lake Sumner Road. Turn of onto Powers road a couple of km short of a long straight. Continue on via Peaks, Hewletts, and Creans Roads to Alpine Horse Treks. Sign in and confirm your permission then follow the private farm track leaving gates as you find them. A koha is expected and you must call in advance.
Leave your shuttle vehicle and return to Lake Sumner Road. After Jacks Saddle the Hurunui Valley comes into view and, four km on, at the bottom of the hill you will find the unmarked Maori Gully take-out. This is the put-in for the Hawarden Gap run.
Note the shuttle takes about an hour so make sure you have extra food and warm clothes for the long wait.
On the River
Twelve kilometres of interesting but not particularly challenging Class II ends a couple of km after the confluence with the Glenrae River where the valley constricts.
A right hand turn at the base of a small grass area with a visible farm track heralds the Hawarden Gap. Eddy out river left and inspect the gap for hazards. The entire river is pumping through a four metre wide chute (the Gap). This creates a grunty drop, basically straight through but very boily. Class II paddlers can portage on river right.
At higher flows it is very boily with recirculation and the prospect of some serious downtime.
Below this is another rapid, that dog legs to the right and then a series of slightly easier rapids in a steep sided gorge before the gradient eases off and the river opens out again after a kilometre.
There is another short gorge with some small rapids before the river spills out on the plains and becomes braided. The takeout is where the river opens out. It is near the Mandamus River confluence.
The Hurunui gauge is here
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