PROFIL MUKA AIR DI HULU GROUNDSILL TIPE AMBANG LEBAR DAN OGEE
Abstract: A Groundsill is
built with main purpose to control river bed. When groundsill is placed in a
river there will cause water surface raises and creates backwater in upstream
of the groundsill. It influences elevation of flood and inundation. The
backwater will inundate riverbank or structures along backwater distance, and
drainage become difficultier as well as cause dangerous spill. Different type of
groundsill will give different inundation impact. Therefore it needs to analyse
water surface raises caused by different type of groundsill. This study is
aimed to analyse water surface profile in upstream of groundsill with two
different type, i.e. broadcrested and ogee. Serang River data is used to
analyse. HEC-RAS Version 4 Beta assist the calculation and analysis. The
calculation result shows that at the same height of sill, Ogee type give higher
backwater level than broadcrested type. Nevertheless, the backwater distance is
not different significantly.
Penulis: Wahyu Widiyanto
Kode Jurnal: jptindustridd070053
