Downholland Brook is a 4.3adj=midNaNadj=mid river (brook) in Merseyside, England, that is a tributary to the River Alt in the Alt catchment. Rising from Barton Brook in the West Lancashire parish of Downholland, the river flows a westerly course until reaching Moss Side, Formby, when it turns south towards Little Altcar in the Metropolitan Borough of Sefton. There, it flows into the River Alt.[1]
Water quality of the brook in 2019, according to the Environment Agency, a non-departmental public body sponsored by the United Kingdom's Department for Environment, Food and Rural Affairs: