The River Culm rises from a spring at RAF Culmhead, and then flows west through Hemyock, Culmstock, then Uffculme, and onward to meet the River Exe near Exeter.
The source of the Otter is north of Otterford, where a stream feeds the Otterhead Lakes. In the Blackdown Hills AONB, the River Otter passes through Churchinford, Upottery and Monkton. Then it drifts onwards through East Devon AONB to the English Channel.
Rising at Staple Hill, the River Yarty flows south through Bishopswood, Yarcombe, Stockland, Dalwood and Membury, before meeting the River Axe just southwest of Axminster.
