Hollingworth Lake is a reservoir at Smithy Bridge, in Littleborough — part of the Metropolitan Borough of Rochdale, in Greater Manchester, England. The lake was originally built as the main water source for the Rochdale Canal, but developed as a tourist resort from the 1860s, and became known as the Weighver's Seaport. Hotels were built around it, at least two of which had outdoor dancing stages with gas lighting. Tourism was helped by the arrival of the railway in 1839, which brought day-trippers and weekend visitors from Manchester, Bradford and Leeds.