Gouthwaite Reservoir is a reservoir in Nidderdale, North Yorkshire, England. It is one of many in the area, others include Roundhill Reservoir and Angram Reservoir.
Gouthwaite's sole purpose is a compensation reservoir for the River Nidd, i.e. it maintains the downstream flow of the river during periods of high and low rainfall.
Wikipedia https://en.wikipedia.org/wiki/Gouthwaite_Reservoir
Address HG3 5, United Kingdom
Coordinates 54°7'7.317" N -1°48'4.638" E