Ogden Reservoirs

Upper and Lower Ogden Reservoirs
View looking east across lower reservoir
Upper and Lower Ogden Reservoirs Location in Pendle Borough Upper and Lower Ogden Reservoirs Location in Lancashire
Location	Lancashire, England
Coordinates	53°51′21″N 2°16′52″W
Built	1906 and 1914
Surface area	2.84 and 8.55 ha (7.0 and 21.1 acres)
Max. depth	17.9 and 18 m (59 and 59 ft)
Water volume	247,755 and 715,989 m3 (200.858 and 580.462 acre⋅ft)
References

Upper and Lower Ogden Reservoirs are half a mile to the west of the village of Barley, in the Borough of Pendle, England. They supply drinking water to the town of Nelson.

Three forests covering more than 23 hectares (57 acres) can be found close to the reservoirs. Fell Wood, which is the largest, was planted in 1931 and contains Norway Spruce (Picea abies), Sitka Spruce (Picea sitchensis), Scots Pine (Pinus sylvestris) and European Larch (Larix decidua). Blue Wood, which was originally planted in 1935 with Scots Pine, Sitka Spruce and Larch was felled and replanted in 1981. The third forest: Buttock Plantation, was planted in 1935 with Sitka Spruce and Larch.

Geology and geography

The area's central feature is a north-westerly facing mounting escarpment - extending from Whalley to the Aire Gap - reaching it's highest point at Pendle Hill (563 metres (1,847 ft)).

Reservoir history

Both Lower and Upper Ogden Reservoirs supply drinking water to the Nelson area. Lower Ogden, completed in 1914 is the larger with a surface area of 8.55 hectares (21.1 acres). It is 18 metres (59 ft) deep and can hold 715,989 cubic metres (157,496,000 imp gal). Upper Ogden, completed in 1906, has a surface area of 2.84 hectares (7.0 acres), is 17.9 metres (59 ft) deep and can hold 247,755 cubic metres (54,498,000 imp gal)).