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The barrage was built to improve the river's watersport's facilities by stabilising a stretch of the river which was previously tidal.

Four massive flood gates, each weighing fifty tonnes, are operated by hydraulic pistons.

They make sure the river upstream stays at a constant level.

There is also a fish ladder which allows fish to navigate the barrage.

As part of Teesside's regeneration the area surrounding the barrage was landscaped.

There are facilities for rafting, water skiing, kyaking and other watersport's.