Chetsford Water rises just above Chetsford Bridge which lies on the moorland road between Porlock Hill and Exford. It becomes Nutscale Water at the eponymous reservoir and then changes its name again at Pool Bridge becoming Horner Water before flowing to the sea at Bossington Beach. It is one of the loveliest of the smaller valleys and is little known to visitors and hence very quiet and peaceful in all seasons. Ring ouzels can be found nesting in the valley in the spring and early summer months.