Example image of eyePlorer eyePlorer map for 'River Derwent, Yorkshire': England River Yorkshire Barmby on the Marsh Fylingdales North York Moors River Ouse, Yorkshire Source (river or stream) Vale of Pickering Vale of York River Rye, Yorkshire Filey Helmsley Malton, North Yorkshire Pickering, North Yorkshire Scarborough, North Yorkshire Stamford Bridge, East Riding of Yorkshire Cleveland Hills Humber Yorkshire Wolds Biochemical oxygen demand Bubwith Elvington, City of York Wheldrake Corallian Limestone Aquifer Sinkhole River Rye Howsham Mill East Cottingwith Pocklington Canal Pocklington Bishop Wilton Melbourne Wilberfoss Tidal river Kingston upon Hull PLC Ramsar Convention Site of Special Scientific Interest Special Area of Conservation Special Protection Area Ice age Weir Fountains Abbey John of England Act of Parliament York and North Midland Railway Conservation area Derwent College