River Hertford
[1] The River Hertford starts close to Muston near the seaside town of Filey.Despite being only 1.2 miles (2 km) from the North Sea (to its eastern side) the river flows westwards for 9.9 miles (16 km)[2] into the River Derwent at Haybridge, North Yorkshire, near Wykeham.[5] Star Carr, a Mesolithic archaeological site, lies close to the river.This area is now known as the River Hertford Floodplain and extends from Muston in the east to Ganton in the west.[8] The River Hertford catchment suffers from the discharges of three sewage plants at Folkton, Hunmanby and Seamer.