Increasing Peak Flow of Snyder Synthetic Hydrograph Units in the Serenan Sub-Watershed of Bengawan Solo Watershed

<p>Changes in land use are closely related to the increasing number of people who from time time. This change has an impact on runoff coefficient because rain that falls will not be retained or seep and flows directly into river. is what causes increase peak discharge a watershed. The purpose this study was determine magnitude changes occurred Serenan watershed 2015 2021 due use. method used analyzing Snyder unit hydrograph, results compared with measured hydrograph correlation between two. To make synthetic non-physical parameters needed form Ct Cp values. value 2.30 it 2.00 while 0.90 1.10. analysis using showed 139.61 m3/s 194.56 2021. shows increased by 54.95 very strong unit. </p>