Daugleddau estuary
The River Cleddau (Welsh: Afon Cleddau) consists of the Eastern and Western Cleddau rivers in Pembrokeshire, west Wales. They unite to form the Daugleddau estuary, which forms the important harbour of Milford Haven.
The name of the combined estuary – the Daugleddau – means “the two Cleddaus”. The name Cleddau, whilst seeming to be a plural ('-au' generally denotes plurality in Welsh) comes from the Welsh word 'cleddyf' meaning 'sword' and refers perhaps to the manner in which both rivers are incised into the landscape of Pembrokeshire.
The Eastern Cleddau (Welsh: Cleddau Ddu) rises in the foothills of Mynydd Preseli at Blaencleddau 51°57′50″N 4°40′17″W / 51.9638°N 4.6713°W in the parish of Mynachlog-ddu. It flows southwest through a broad moorland valley to Gelli Hill, where the River Syfynwy joins it. It then flows south through a deep valley past Llawhaden and becomes tidal at Canaston Bridge, the lowest crossing point. The estuary joins that of the Western Cleddau at Picton Point 51°46′05″N 4°53′46″W / 51.768°N 4.896°W. Length about 34 km of which about 7 km is tidal.
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