Fish type, number and size The Pomahaka holds brown trout and sea salmon (plus perch). In the headwaters, the trout are large (2-3 kg) but few and far between. In the middle and lower reaches, there are smaller fish (0.5-1.5 kg) but more of them. Maps Returning sea salmon average 2-6 kg. Large salmon are also caught in this section The Pomahaka River rises south of Roxburgh in the Umbrella Mountains, and winds through 125 km through West Otago farmland before entering the Clutha River below Clydedale. Access map by Google Check conditions View the MetService weather forecast Situation View the river flow. View the rainfall. Conservation order A conservation order, designed to provide for the unimpeded migration of fish, prohibits damming of the Pomohaka River except for stockwater supply purposes. For more details refer to the Otago Regional Council website and the Regional Water Plan. Upper reaches In the headwaters, the Pomahaka is a classic high-country stream with steep gorges, deep pools and clear, slightly tea-stained water. Middle reaches In the middle reaches, (from Leithen picnic area to Conical Hill) the river flows mainly through flat pastureland The river is easily accessed and flows over a mostly gravel bed. Lower reaches In the lower reaches, there is a series of gorges and flats, and the water is darker in colour making it harder to spot the fish. Recommended lures Variants of the mayfly at different stages of its life cycle should be tried on all parts of the river. Nymphs: Large weighted nymphs in the headwaters, including Hare’s Ear and Pheasant Tail. In the middle and lower reaches in summer, Willow Grub is a must. Dry flies: Terrestrial type dry flies in the headwaters such as Coch-y Bondhu and Grasshopper: Tributaries Spinners: Veltic, Toby, or articulated trout Waipahi River