Last updated July 2026
The Opihi River is a lowland river in South Canterbury that flows eastward from the Ben McLeod and Richmond ranges to enter the sea near Temuka, approximately 15 kilometres north of Timaru. It supports a good population of brown trout averaging over 1 kg in its middle and upper reaches, along with a modest annual run of Chinook salmon that enters the lower river and estuary. The fishery is managed by Fish & Game Central South Island, and a current freshwater fishing licence is required for all anglers. The Opuha Dam has helped reduce extreme low flows and maintain better river mouth conditions in recent years.
Practical Information
| Species | Brown trout (middle and upper reaches); modest Chinook salmon run (lower river and estuary) |
| Licence | Fish & Game Central South Island freshwater licence required |
| Season | Trout: 1 October–30 April; Salmon: 1 October–31 March |
| Access | Multiple points including SH1 bridge at Temuka, Milford Huts, Wareing Road, Waipopo Huts, Seadown Road, Roaring Camp Road, Saleyards Bridge (Pleasant Point), Hanging Rock Bridge and Raincliff Bridge |
| Notable spots | Lower river and estuary near Temuka/Arowhenua for salmon; Waihi and Tengawai tributaries; middle reaches around Hanging Rock Bridge for trout |
| Conditions | Clear water early in season; prone to low flows or drying in mid-to-late summer; Opuha Dam assists with maintaining flows and open mouth |
About the Opihi River Fishery
The Opihi River and its main branches, including the Temuka and Waihi, form a popular and productive lowland fishery in South Canterbury. Brown trout are the primary species throughout much of the system, with reasonable numbers present year-round in the middle and upper reaches where the river flows over a shingle bed between willow-lined banks. Early in the season the water is often clear, making it suitable for dry fly and nymph fishing with small patterns.
Chinook salmon enter the lower river in a modest run, typically later in the season. Angling for salmon is concentrated from the mouth upstream to the SH1 bridge, though mouth closures can sometimes restrict access. The Opuha Dam has reduced the frequency of extreme low flows, helping keep the river mouth open more reliably during summer.
The Tengawai (also referred to as Te Ngawai) and other tributaries such as the Waihi provide additional fishing opportunities, particularly early in the season. Low summer flows remain a feature of the system, so anglers should check current river levels and conditions before heading out in midsummer.
Fishing Access and Regulations
Public access exists at numerous road bridges and designated points along both banks. Popular northern bank sites include Milford Huts, Wareing Road and the SH1 bridge near Temuka. Southern bank options include Waipopo Huts, Seadown Road, Roaring Camp Road, Saleyards Bridge at Pleasant Point, Hanging Rock Bridge and Raincliff Bridge. A short walk is often required from the vehicle to the water. Fish & Game access pamphlets and maps provide detailed guidance.
Regulations vary slightly by section. Upstream and downstream of the Opuha confluence, trout bag limits are 2 or 4 fish respectively, with salmon limited to one per angler or family licence over the season. Below the SH1 bridge a winter season applies for trout only from 1 June to 31 August. Always confirm the latest regulations and bag limits with Fish & Game Central South Island before fishing.
Where to Learn More
Fish & Game Central South Island: official regional information, access guides and regulations for the Opihi River and other South Canterbury waters.
Fish & Game New Zealand: licence purchase, current fishing reports and regional regulations for Central South Island.
What Visitors Often Say
Anglers describe the Opihi as a pleasant, accessible river with good early-season clarity and solid brown trout fishing on dry flies and nymphs. Many note that low summer flows concentrate fish in pools but can make them wary, and appreciate the modest salmon opportunities near the mouth when conditions allow.
Visitors highlight the variety of access points and the helpful role of the Opuha Dam in maintaining flows. Some mention combining trips with nearby rivers or using local maps to find quieter stretches away from popular bridges.
Frequently Asked Questions
What fish are in the Opihi River?
Brown trout throughout the middle and upper reaches, with a modest run of Chinook salmon in the lower river and estuary near Temuka.
Do I need a licence to fish the Opihi?
Yes, a current Fish & Game Central South Island freshwater fishing licence is required for all anglers.
When is the best time to fish the Opihi?
Trout fishing is open 1 October to 30 April; salmon fishing runs 1 October to 31 March, with the best salmon action often later in that period.
Where are the main access points on the Opihi River?
Key sites include the SH1 bridge at Temuka, Milford Huts, Wareing Road, Waipopo Huts, Seadown Road, Roaring Camp Road, Saleyards Bridge, Hanging Rock Bridge and Raincliff Bridge.
Is the Opihi River near Timaru?
Yes, the lower reaches and estuary are around 15 kilometres north of Timaru near Temuka, easily reached via State Highway 1.
Are there any special regulations or bag limits?
Bag limits vary by section (2 or 4 trout); salmon is limited to one per angler or family licence over the season. Check the latest Central South Island regulations before fishing.
Does the river suffer from low flows?
Yes, the Opihi can experience low flows or partial drying in mid-to-late summer, though the Opuha Dam has improved conditions in recent years.
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