 The River Cary originates in Castle Cary in the east of Somerset . It flows south @-@ west through Cary Moor to Cary Fitzpaine . The river then turns north @-@ west to the north of Somerton . It then used to turn south to join the Parrett but now passes through Somerton Moor and crosses Kings Sedgemoor in an artificial channel , the King 's Sedgemoor Drain , joining the Parrett at Dunball north of Bridgwater . 
