Waimakariri River

Introduction

While the Waimakariri River is one of New Zealand’s most heavily fished waterways, its popularity extends far beyond its proximity to Christchurch. This river is home to one of the country’s most iconic sea-run salmon fisheries, along with strong populations of brown and rainbow trout that offer exciting angling opportunities throughout the season.

As a classic snow-fed braided river, the Waimakariri is known for its ever-changing character. River flows can vary dramatically, and floods are possible at any time of year—adding to both the challenge and the thrill of fishing its dynamic waters.

Getting There

Access to the Waimakariri is one of its greatest advantages. At its closest point, the river runs right through the outskirts of Christchurch, making it incredibly convenient for day trips.

• Tidal Reaches: Easily accessed via Old Main North Road or through the township of Kaiapoi. These lower sections are popular, especially during salmon runs.

• Upstream of SH1: A network of roads and tracks on both sides of the river provide good access for exploring the middle reaches.

• The Gorge: Access is more limited in the gorge section, but improves again near State Highway 73, just west of Cass.

• Tributaries: Several key tributaries—well-known for their quality trout fishing—can be accessed directly off SH73, making this area especially attractive for anglers looking to explore.

The Mouth & Lagoon

The mouth of the Waimakariri River stands apart from other Canterbury rivers. Rather than a narrow gut and classic shingle spit, the Waimakariri empties into a wide tidal bay, with the river mouth often spanning more than 100 metres across.

Fishing the Tidal Reaches

The top half of the outgoing tide is the most productive time to fish in the tidal zone—especially when it aligns with early morning light. The Waimakariri’s salmon run occurs later in the season than most other rivers and over a shorter timeframe. Prime salmon fishing here is typically during February and March.

Boat Access

Anglers with boats have several convenient launching options:

• Kaiapoi Boat Ramp (near the BMX track) – allows quick access down the Kaiapoi River into the Waimakariri.

• Kairaki Beach and just above the SH1 Motorway Bridge are also popular launching spots.

⚠️ Boating Reminder: Speeds must be kept under 5 knots in the Kaiapoi River and below the Motorway Bridge for safety and compliance.

McIntosh’s Rocks

Located approximately 1 km upstream of the river mouth on the north bank, McIntosh’s Rocks is the most popular fishing location on the Waimakariri. Known for its ease of access and community-friendly atmosphere, it’s especially ideal for:

• Beginner and young anglers – No wading required

• Mobility-impaired anglers – A dedicated wheelchair-accessible fishing platform is available

Sea-run trout begin arriving in the tidal reaches during spring and early summer. The riffles near the Old Highway Bridge, at the upper end of the tidal zone, are a favourite spot. The best time to target these trout is when the river is discoloured and the last hour of daylight lines up with low tide.

Wheelchair Access Information

A wheelchair fishing platform is installed at McIntosh’s Rocks. Anglers requiring access can apply for mobility vehicle exemptions directly through Environment Canterbury (ECan):

• Visit the ECan Parks Office: 1330 Main North Road (by appointment)

• Contact via phone through the ECan main customer service line

• Or email the Parks Team directly:
  [email protected]

Applications are assessed on a case-by-case basis, with the primary criteria being a disability or mobility vehicle exemption need.

The Middle Reaches: SH1 to Gorge Bridge

Fishing the middle reaches of the Waimakariri River can be a case of perfect timing—when the conditions line up, the rewards can be exceptional.

Salmon Fishing

Salmon behaviour in this section is famously unpredictable. Typically, fish hold in the tidal reaches until a fresh (a rise in river flow) encourages them to push upriver. When the run begins, salmon often move quickly, racing through the middle reaches to reach the safety of the gorge before river levels drop again.

Anglers who are on the river as the fresh clears—particularly between mid-February and late March—can experience excellent fishing. But once the run has passed, catch rates tend to fall sharply.

• Best time to fish: The first clear day after a fresh during the salmon season

• Top salmon spots: Look for slow, deep water—often near willow clumps or around river groynes and structure

• Gear access: This section is very accessible and doesn’t require a jet boat, ATV, or 4WD to reach productive water

Trout Fishing

The middle reaches also hold healthy populations of brown and rainbow trout, especially during the autumn and winter months. These fish can be found throughout the section and respond well to both spin and fly techniques, particularly in calmer side channels and deeper runs.

The Gorge: Remote Beauty, Reliable Runs

The Waimakariri Gorge is one of the South Island’s most breathtaking river landscapes. Towering cliffs, fast water, and untouched scenery define this remote stretch of river.

Access & Conditions

While visually stunning, much of the gorge is inaccessible to shore-based anglers, with only a few public access points:

• Gorge Bridge

• Woodstock

• Kowai River confluence

Despite limited access, the gorge offers more consistent salmon fishing than the middle reaches—particularly during March and early April, when fish are moving steadily upstream.

⚠️ Regulation Reminder:
Salmon fishing is not permitted above Staircase Gully, located a few kilometres upstream of Woodstock. Always consult the most recent Fish & Game Regulation Guide before fishing this section of the river.

Upper Waimakariri River

Above the Mt White Bridge, the main stem of the Waimakariri River offers some trout fishing opportunities. During summer, this stretch often runs low, prompting trout to migrate downstream into the gorge where flows are more consistent.

However, the true gem of the upper river area lies in its tributary streams, which offer some of Canterbury’s most enjoyable backcountry fishing experiences.

Productive Tributaries

Several tributaries hold strong, self-sustaining populations of brown and rainbow trout, and provide clearer, more stable flows than the main river:

• Broken River

• Winding Creek

• Porter River

These streams are less flood-prone, support consistent fishing throughout the season, and are best accessed off State Highway 73—between Lake Lyndon and Lake Pearson.

Fishing Methods

Salmon Fishing

Spin fishing is the go-to method for targeting salmon throughout the Waimakariri system. Gear and lure selection should reflect your location on the river:

• Tidal Reaches:
  Use a medium-action rod (2–2.5 metres) with a reel that holds 200 metres of 7–10kg line. Opt for heavier casting lures like:

  • 42g ticers

  • 28g zed spinners

• Above SH1 Bridge:
  Casting distance is less critical. Use lighter lures that still run deep:

  • 17–22g zed spinners

  • Ensure lures are fished right on the bottom to be effective

Trout Fishing

Sea-Run Trout

Best targeted using streamer flies and soft baits that imitate native smelt, especially in faster-flowing water. Spin gear can also be productive, particularly in slower current areas.

Main Stem (Upriver Trout)

Traditional fly and spin techniques both work, though sight fishing is difficult due to silt content in the water. Instead, anglers rely on blind fishing, casting to likely holding water and working it thoroughly.

Tributaries (Backcountry Streams)

In contrast, the clear waters of the upper tributaries offer classic backcountry-style sight fishing. Lightweight fly gear and a stealthy approach are key to success when stalking brown and rainbow trout in these scenic alpine streams.

Conservation Note: These tributaries are sensitive ecosystems. To protect their quality and ensure sustainable fishing for future generations, anglers are encouraged to limit their harvest and practice catch and release where possible.

Regulations & Licensing

Before heading out to fish the Waimakariri River, please ensure you're up to date with all licensing and regulation requirements:

• A current Sports Fishing Licence is required for trout fishing.

• If you're targeting sea-run salmon, you must also hold a Sea-Run Salmon Licence.

  • This includes fishing within 500 metres of the river mouth.

For detailed guidance on salmon-specific rules and licence conditions, visit:
FAQs for Sea-Run Salmon Anglers

Always consult the latest Fish & Game Regulation Guide before you start fishing. Regulations can change from season to season, and staying informed ensures both compliance and conservation.

Further Information: River Conditions

The Waimakariri River is known for its highly variable flows. Floods can occur at any time of year, significantly affecting water clarity, access, and fish behaviour.

To ensure a safe and successful trip, anglers are strongly encouraged to check river conditions before leaving home.

Use this link for up-to-date flow data:
ECan River Flow Service