Fewston Reservoir is located in the Washburn valley north of Otley and west of Harrogate in Yorkshire, England.

The reservoir is the property of Yorkshire Water, which manages it for the benefit of walkers, anglers and wildlife.

Situated in the charming Washburn valley, sharing an embankment with Swinsty Reservoir, Fewston is popular with walkers and runners.

[3] Much of the machinery, including the locomotives for the narrow gauge railway, came from the construction of neighbouring Swinsty Reservoir.

There are no steps, stiles or gates and the reservoir features wide, well surfaced paths with only a few moderate inclines.