River Spen

River Spen
Spen River running east through Millbridge, Liversedge into Heckmondwike
Location
Country	England
Physical characteristics
Source
• location	Confluence of Hunsworth Beck and Nann Hall Beck in Cleckheaton
• coordinates	53°43′59″N 1°43′05″W / 53.73306°N 1.71806°W / 53.73306; -1.71806 (Source of River Spen)
• elevation	81 metres (266 ft)
Mouth
• location	River Calder at Dewsbury
• coordinates	53°40′49″N 1°39′4″W / 53.68028°N 1.65111°W / 53.68028; -1.65111 (Mouth of River Spen)
• elevation	42 metres (138 ft)
Length	8 kilometres (5.0 mi)
Basin size	46.3 square kilometres (17.9 sq mi)[1]

The River Spen or Spen Beck, in West Yorkshire, England is a tributary of the River Calder. It rises north of Cleckheaton, runs through Liversedge and flows into the Calder to the south of Dewsbury at Ravensthorpe. The average rainfall for the river valley of between 600–1000mm per annum when combined with the steep narrow river channel, makes the Spen susceptible to regular flooding.^[2] It is referred to in the name of the local parliamentary constituency, Batley and Spen, to account for the villages and suburbs of Batley in the Spen Valley, such as Liversedge and Gomersal.