Kelly Hydro Scheme
An Archimedes’ screw is now in operation at the site of the sawmill at Kelly. The original water wheel that drove the sawmill was removed in 1936 and replaced by a 2.5kW electrical generator. This was in turn been replaced in 2010 by a new 10kW generator, which is powered by water driven down a channel from Kelly Lake through a large auger. The hydroelectricity generated is then fed directly into the National Grid.
The Lady Anna Falls, a salmon ladder that can be found alongside the Archimedes’ screw, allows the safe passage of fish from the River Ythan up into Kelly Lake.