River Cleddau

The River Cleddau in Pembrokeshire splits into two branches, the Eastern and Western Cleddau, which join to form the Daugleddau estuary and Milford Haven Waterway. The Eastern Cleddau rises in the Preseli Mountains and flows southwest through moorland and deep valleys past Llawhaden. The Western Cleddau has two branches that meet near Wolf’s Castle before cutting through Treffgarne gorge. The rivers are known for their untouched aquatic ecology, supporting otters and several lamprey species. Parts of both branches are designated Sites of Special Scientific Interest for their wildlife. The estuary itself shelters large ships and has a long history as a harbour, once serving castles and industrial ports. Visitors find quiet valleys, deep gorges and wide tidal waters shaped by ancient ice flows. The riverside paths pass through moorland and woodland, with views of the Preseli Hills. The estuary’s serpentine shape makes it a safe haven for wildlife and small boats alike.