The River Ffyddion is a

tributary A tributary, or an ''affluent'', is a stream or river that flows into a larger stream (''main stem'' or ''"parent"''), river, or a lake. A tributary does not flow directly into a sea or ocean. Tributaries, and the main stem river into which they ...

of the

River Clwyd The River Clwyd ( ; , ) is a river in Wales that rises in the Clocaenog Forest () northwest of Corwen. Its total length is . It flows due south until, at Melin-y-wig, it veers north-eastwards due to the Vale of Clwyd Fault and passes throu ...

in North Wales. It is this river that forms Dyserth Waterfall. The river flows from the main body of the River Clwyd and then branches off North and goes towards

Prestatyn Prestatyn (; ) is a seaside town and community in Denbighshire, Wales. Historically a part of Flintshire, it is located on the Irish Sea coast, to the east of Rhyl. Prestatyn has a population of 19,085. Origin of name The name Prestatyn d ...

. As this river forms a waterfall and goes through the village of

Dyserth Dyserth () is a village, community and electoral ward in Denbighshire, Wales. Its population at the 2011 United Kingdom census was 2,269 and was estimated by the Office for National Statistics as 2,271 in 2019. It lies within the historic cou ...

, it can be prone to flooding. An example was back in 2000.

References

Rivers of Wales {{Wales-river-stub