Geograph - photograph every grid square

This water channel diverts Light Hazzles Clough across a low ridge to Higher Chelburn Reservoir. It was constructed before 1850, when the reservoir supplied water to the summit pound of the Rochdale Canal.

On the ridge there is a pond with a weir on the channel going forward to the reservoir and a higher weir on an overflow channel that drops back down to Light Hazzles Clough, now called the River Roch despite its small size.

Approaching the reservoir there is another overflow controlled by a stop board, which in July 2017 is diverting all flow to the watercourse downstream of the reservoir. Then there is a storage pond with a weir at the outlet, and the channel finally plunges steeply down to the reservoir.

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