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The Tongariro River is a river in the North Island of New Zealand. The part of the Waikato River from the Waihohonu Stream, down to Lake Taupo, was formally named the Tongariro River in 1945. The river originates in the Central Plateau of the North Island where it is fed by numerous tributaries (such as the Whitikau, Poutu, and Mangamawhitiwhiti streams) that flow off the surrounding hill ranges and mountains such as Mount Ruapehu. It then winds its way north, through the township of Turangi before entering Lake Taupo via a number of river mouths. The minimum volume of water flowing down the lower Tongariro River ranges from approximately (recorded at the upper rivers Poutu Intake)〔(【引用サイトリンク】publisher=Genesis Energy )〕 to (recorded at the lower rivers Major Jones Pool).〔(【引用サイトリンク】publisher=Genesis Energy )〕 This volume can substantially increase due to catchment of rainfall by the surrounding mountains and hill ranges. The Tongariro River is New Zealand's most fished river,〔(【引用サイトリンク】 publisher=Department of Conservation (New Zealand) )〕 and is a drawcard for anglers the world over, who come to the Tongariro to fish for spawning rainbow trout and brown trout, which run up the river from the lake to spawn over the colder winter months. Approximately 75% of the trout in the Tongariro are rainbow trout, and 25% are brown trout. The Tongariro is classed as one of the best trout fishing rivers in the world, and part of its charm lies in its accessibility. New Zealand’s State Highway 1 follows the river for a number of kilometres providing anglers with easy access to the numerous pools and rapids. As many waterways in New Zealand are owned by the Crown, no one person has ownership of any stretch of water. For the cost of a Taupo Fishing Licence (NZ$90.00 for a 2012–13 seasonal licence) anyone can fish the river. It is therefore not unusual to see locals fishing alongside overseas anglers or celebrities (who are usually out with a guide). Pools on the Tongariro River are usually named after historical people who have fished the river (Major Jones Pool, Duchess Pool), or their geographic location (Birch Pool, Fence Pool, Redhut Pool). Floods have significantly altered the size and shape of many of these pools (such as in 2004 when the Breakaway Pool was completely lost due a change in the rivers direction), while others such as the Major Jones Pool have remained relatively unchanged in the last 50 years. Fishing techniques that prove to be popular include nymphing, wet lining and dry fly techniques. A fly fishing casting technique similar to a single handed spey cast called the Tongariro roll cast was developed on this river. The name was coined by Herb Spannagl who noticed its use on the Tongariro and felt it was sufficiently different from other casting techniques. The Tongariro roll cast is used to cast a fly line in situations where there are obstacles behind the caster that obstruct the angler from using traditional fly casting techniques. ==Whitewater kayaking and rafting== The Tongariro River has 3 main sections of whitewater; named 'Access 14', 'Access 13' and 'Access 10'. These sections are the most popular on the Tongariro and provide grade 4, 3+ and 3 whitewater respectively. Lesser run sections of grade 2 exist, the first of which runs down to the put-in of Access 14 and the lower section runs from Blue Pool to Turangi. Sections of nearly unpaddleable whitewater fill the two main gorges, Tree Trunk Gorge and Waikato Gorge. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tongariro River」の詳細全文を読む スポンサード リンク
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