Afon Dyfrdwy is a Site of Special Scientific Interest (SSSI) in the preserved county of Clwyd, north Wales, along the River Dee with the River Dee (England) SSSI in England. The river begins in Snowdonia National Park, Wales. From there, it flows northeast to Corwen, goes eastwards past Llangollen, and continues east through Chester, England. It empties into the Dee estuary, that forms the border between the Wirral Peninsula in north-west England and Flintshire in north-east Wales. The river has been designated a Designated Special Area of Conservation due to its role as a habitat for Atlantic Salmon and Floating Water Plantain.
Caeau Pen-y-coed is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Chwarel Pant Glas is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Chwarel Singret is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Coed y Gopa is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Connah's Quay Ponds and Woodland is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Crest Mawr Wood is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Graig Fawr is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales, now in Denbighshire. It is 153 metres high and located near Prestatyn. It is owned by the National Trust.
Graig Quarry is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Graig, Llanarmon-yn-Ial is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Hanmer Mere is a body of water and Site of Special Scientific Interest in the preserved county of Clwyd, north Wales, now in Wrexham county borough.
Hendre Bach is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Llyn Bedydd is a small lake in Wrexham County Borough, in northeastern Wales, near the border with England. It is 7 kilometres (4.3 mi) south west of Whitchurch. The lake and the surrounding woodland are designated as a Site of Special Scientific Interest.
Maes y Grug is a Site of Special Scientific Interest at Alltami in the preserved county of Clwyd, north Wales.
Slade Brook is a 3.63-hectare (9.0-acre) biological and geological Site of Special Scientific Interest in Gloucestershire, notified in 2003.
Caerwys F.C. is a football club representing the Flintshire town of Caerwys in Wales, and they play their home games at Lon yr Ysgol at Caerwys.
Badley Moor is an 18.3-hectare (45-acre) biological Site of Special Scientific Interest east of Dereham in Norfolk. It is part of the Norfolk Valley Fens Special Area of Conservation.
