Wharfedale Filey YO14 0DG Filey Dams | YWTFiley Dams Nature Reserve:The last remaining freshwater marsh of any size in the area, Filey Dams is a magnet for migratory birds and a haven for plants, small mammals and amphibians.The last remaining freshwater marsh of any size in the area, Filey Dams is a magnet for migratory birds but is also a haven for plants, small mammals and amphibians. When to visit Opening times Open at all times. We recommend a 1 hour trip for this reserve https://www.ywt.org.uk/reserves/filey-dams-nature-reserve