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Portrack Marsh Nature Reserve is a reserve by the northern bank of the River Tees between the Tees Barrage and the Tees Viaduct, near Portrack housing estate in Stockton-on-Tees borough, County Durham. It is the last remaining wetland on the lower Tees.〔 The site is bounded by Marston Road, a disused railway line, the Northumbrian Water's waste water treatment site, the River Tees, the Tees Barrage White Water Course, the grounds of The Talpore pub and a Tees Barrage access road. Ownership of the reserve is split between Tees Valley Wildlife Trust and Northumbrian Water but the reserve is managed by Tees Valley Wildlife Trust. The reserve in the west and north is mature marsh while there are a series of man–made ponds in the remainder. The site is at an altitude of over datum. == History == The land for the reserve is inside a former meander of the old River Tees. The loop was removed in 1830–31 by creating the Portrack Cut through the marshes, leaving an artificial oxbow lake, shortening the river and making it more navigable.〔〔(【引用サイトリンク】work=The Wildlife Trust Tees Valley )〕 Part of the oxbow lake of the old river bed was filled in leaving Portrack Lake but this was lost in the 1970s.〔 Part of this land was purchased by Northumbrian Water for a water treatment works with the proviso that some of the land would be set aside and managed as a nature reserve. Tees Valley Wildlife Trust was established in 1979〔(【引用サイトリンク】work=CommuniGate )〕 and they own the western half of the reserve. In 1992 Northumbria Water created new pools in their part of the reserve.〔 Over the years various wildlife projects on the nature reserve have been funded by bodies such as The Environment Trust, the Heritage Lottery Fund, Northumbrian Water, and Stockton-on-Tees Borough Council.〔 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「Portrack Marsh Nature Reserve」の詳細全文を読む スポンサード リンク
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