The Luk Ulo River is a river that runs along Karanggulung, Kebumen Regency, Central Java. The Luk Ulo River which cuts the north-south area of Karanggulung shows a meandering appearance. The parameters of the Luk Ulo river aim to analyze changes in the morphometric characteristics of the river. The measurement parameters observed were the length of the stream (s), the radius of curvature (r), t…