The River Ķīšupe (length – 31 km) begins its journey in the marshlands of Lēdurga Parish. As the river reaches the seashore, its bed and the location of its mouth often changes. One of the tributaries of the Ķīšupe carries a rather interesting name – Pupaļurga. The name of the River Ķīšupe probably comes from the name of a man and his house. In the 17th century a man named Ķīsis (in English: ruffe) used to live by the river.