Etherow Country Park is in Compstall, a village between Marple Bridge and Romiley, in the Metropolitan Borough of Stockport, Greater Manchester, England.
The River Etherow flows through the park and is the source for the mill pond.
With the decline of industry, the mill pond and park have become a nature reserve and a place for people to spend time walking and taking in the peaceful surroundings.
Compstall Nature Reserve is a 12.8-hectare (32-acre) region of the park which was designated a Site of Special Scientific Interest (SSSI) in 1977; this was for its biological interest, especially its wide range of habitats including open water, tall fen, reed swamp, carr and mixed deciduous woodland.
The site is also of considerable ornithological interest with water rail, an uncommon species, having been recorded.