Grimwith Reservoir Claimed

Grimwith Reservoir is located in the Yorkshire Dales, accessed from the B6265 road 1.5 miles (2.4 km) east of Hebden and 8 miles (13 km) west of Pateley Bridge. With a surface area of 1.47 square kilometres (0.57 sq mi) and holding 21,772,000 cubic metres (4.789×10⁹ imp gal) of water it is Yorkshire Water's largest reservoir. The original reservoir was built in 1864 for the city of Bradford, approximately 300 metres (980 ft) above sea level in Wharfedale. Following an agreement made in 1970 the size of the reservoir was increased by seven times and the water level was raised by 20 metres (66 ft), with work starting in 1976 and completed in 1983. 

The reservoir is an important area for birds and is home to wildfowl such as Eurasian wigeon, teal, greylag geese and Canada geese. Other birds that can be seen at various times in the area include ringed plover, northern lapwing, common redshank, Eurasian curlew, reed bunting, lesser redpoll, whinchat and sedge warbler.

The reservoir is a popular destination for leisure activities such as sailing, walking and visitors to Stump Cross Caverns. A 7.2 kilometres (4.5 mi) wheelchair-accessible footpath / track circumnavigates the