The Valency valley is steep-sided and the sides of the lower section are wooded. The valley has been flooded many times, most seriously in the Boscastle flood of 2004 when significant channel erosion occurred.
The Valency valley is sloping-sided and the sides of the lower section are forested. The valley has been inundated several times, most severely in the Boscastle flood of 2004 when substantial channel erosion took place.