Hydraulic analysis of Semarang river in supporting the drainage channel as water tourism
A Sarminingsih1*, M Hadiwidodo1, A Rezagama1, K S Sausan1, Nurullah1

1Department of Environmental Engineering, Faculty of Engineering, Diponegoro Univesity, Tembalang, Semarang, 50275, Indonesia

Abstract

The Semarang River is a flushing channel which is located in the Semarang River Drainage Sub-System and has the potential to be used as a water tourism area with the concept of Historical River Front City Walk. The planned water tourism area is in the form of procuring boats in Kota Lama area which is a historic area in the city of Semarang. This review-design aims to hydrology and hydraulics model of the Semarang River using SWMM 5.1. The method is carried out by observing the existing conditions of the study area, determination of flood discharge plans and reviewing the design of the drainage system. The analysis starts from the Simongan Weir Bridge as the upstream of the Semarang River to the Berok 2 Bridge which is located in the Kota Lama area. The results showed the intensity of rainfall designed 25 years is 155.7 mm/hour with the capacity of the Semarang River in existing and planning conditions can still accommodate the flood discharge plan and a weir with a height of 1 m is needed to maintain the water level in boundary condition so that boat tours can operate optimally.

Keywords: Semarang River- Water Tourism- Drainage System- SWMM- Weir

Topic: Environmental modelling and computation