Chelker Reservoir is a man made lake near the village of Addingham

Addingham

Addingham is a village and civil parish in the English county of West Yorkshire. It is situated on the A65, west of Ilkley, north west of Bradford and around north west of Leeds. It is located in the valley of the River Wharfe and is only from the Yorkshire Dales National Park...

 and was put into service in 1866 and serves the Bradford

Bradford

Bradford lies at the heart of the City of Bradford, a metropolitan borough of West Yorkshire, in Northern England. It is situated in the foothills of the Pennines, west of Leeds, and northwest of Wakefield. Bradford became a municipal borough in 1847, and received its charter as a city in 1897...

 area; it is currently owned by Yorkshire Water

Yorkshire Water

Yorkshire Water is a water supply and treatment utility company servicing West Yorkshire, South Yorkshire, the East Riding of Yorkshire, part of North Lincolnshire, most of North Yorkshire and part of Derbyshire, in England. The company has its origins in the Yorkshire Water Authority, one of ten...

. The reservoir lies next to the A65 road

A65 road

The A65 is a major road in England. It runs north west from Leeds in Yorkshire via Kirkstall, Horsforth, Yeadon, Guiseley, Ilkley and Skipton, passes west of Settle, then continues through Ingleton and Kirkby Lonsdale before terminating at Kendal in Cumbria....

 and its main inflow is the River Wharfe

River Wharfe

The River Wharfe is a river in Yorkshire, England. For much of its length it is the county boundary between West Yorkshire and North Yorkshire. The name Wharfe is Celtic and means "twisting, winding".The valley of the River Wharfe is known as Wharfedale...

.

Chelker Wind Farm

On the north side of the reservoir is a wind farm which consists of four two-bladed turbines which generate 1.2MW and went online in December 1992 and are used to pump water from the River Wharfe up to the reservoir. Currently there are only two turbines which are still active today.