Calder from Ryburn Confluence to River Colne is a river in West Yorkshire
Calder from Ryburn Confluence to River Colne takes in water from an area around 32.081 km2 in size and is part of the Calder Middle catchment area.
Calder from Ryburn Confluence to River Colne is 18.148 km long and has been heavily modified by industry in the past.
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