Water management design in tourism areas with Gabion infrastructure

• Main Authors: Nurwidyaningrum, Dyah, Impak, Suzan Binti, Pratiwi, Devi Megarusti, Sari, Tri Wulan, Sutjahyo, Kusumo Drajat, Pahinggis, Mayda
• Format: Conference Proceeding
• Language: English
• Subjects: Access roads; Drainage; Drainage channels; Drainage ditches; Drainage measurement; Erosion rates; Gabions; Infrastructure; Landslides; Landslides & mudslides; Natural disasters; Natural stone; Open channels; Rainfall; Rainy season; Retaining walls; Soil structure; Tourism; Tourist areas; Water discharge; Water management
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0229396

Natural disasters in the tourist area of the Negeri di atas Awan (NDA), Banten, Indonesia, occur almost every rainy season. This photo spot, a tourist area’s mainstay, appears vulnerable to landslides and land shifts. The access road to this tourist destination was also several times blocked by red soil material from landslide hills (slope > 20o). The gabions structure in this area has become retaining walls in general. Therefore, this research aims to design water management in tourist areas with gabion infrastructure. The method calculates the intensity of rainfall and flow discharge and then plans a water management design. From the calculation results, the required water management design can be planned as drainage and landslide prevention plants. Drainage for hilly tourist areas with a slope of 52o can use a U-Ditch measuring 50×50×120×8 cm and other open channels made from natural stone. The planned discharge is 9.47 m3/s, and the water volume is 102.2 m3, using the size of a rectangular type U-ditch drainage channel, namely 50 × 50 × 120 cm, where the channel length is 500 m. The calculation results for a total channel volume of 125 m3 means that the storage volume has met the planned discharge volume. Landslide prevention plants in areas at an altitude of 500-1000 m above sea level can reduce the rate of erosion by up to 90% using vetiver roots.