It was constructed by Harrogate Corporation early in the 20th century.

[1] Roundhill reservoir is overlooked by a stone tower, Carlesmoor sighting tower that was used to triangulate the end points of a water tunnel from the reservoir to Harrogate.

[3] In 1908, while Roundhill was being constructed, Leeds Corporation began building Leighton Reservoir close by.

Both reservoirs impounded the water from Pott Beck: Harrogate was permitted by Parliament to take no more than 4 million gallons per day, the rest going to Leeds.

This North Yorkshire location article is a stub.