thumb|left|300px|The River Tame in the lower part of the parkWoodhall Fields form the southern or lower (with reference to the river) part of the park. The weir here was used to feed the Portwood Cut, dug in 1796, which ran to the Portwood area of Stockport and powered a number of mills around the start of the 19th century. Part of the fields were once a landfill site for fly ash; this has proved to be a good growing medium for orchids.
