Implementation of a Project-Based Learning Model in Analyzing River Morphology to Improve the Skills of Civil Engineering Students, Case Study: Batang Angkola River, South Tapanuli Regency

The Batang Angkola River is administratively located in South Tapanuli Regency which flows not only in South Tapanuli and North Padang Lawas Regencies.The results of the interview with the Irrigation Manager explained that the floods that occurred in the Batang Angkola River (river width ± 25 M) experienced the highest flooding in 2016.To determine the morphology of the Batang Angkola River and what efforts were made to deal with flooding in the Batang Angkola River, the aim of this study.The results of the research included 1) The characteristics of the Batang Angkola River have moderate, winding, and sedimentary water currents.2) The morphology of the river can be seen that there is a slight meander that occurs at several points in Pargumbangan Village and Sigalangan Village, 3) Changes in morphology are caused by critical cliffs, rampant C (sand) excavation which is not regulated so that it has the potential to damage river flow, river utilization by residents as a place to collect river water and sanitation as well as the breakdown of plaster which causes a new river channel to the community's rice fields, 4) Efforts to manage the river are carried out by paying attention to the structure of the river bed formation, the dimensions of the riverbed, the slope of the river bed, the dynamics of the meanders, the existence of river banks and 5) Proposed alternative handling of building reinforcement of critical cliffs with TPT and gabions.