STUDY OF THE IMPACT OF CIPALI TOLL ROAD CONSTRUCTION ON DROUGHT BASED ON LANDSAT SATELLITE IMAGERY IN SUBANG, INDRAMAYU AND MAJALENGKA REGENCIES

• Main Author: Wulandari, Parasmita
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/78431
• Institution: Institut Teknologi Bandung

The construction of the Cikopo-Palimanan (Cipali) toll road which started from 2011 to 2015 required the procurement of land covering an area of ±756 hectares. Construction of toll roads in the form of excessive dredging and excavation of land will result in reduced water catchment areas, clean water crises and even drought. Drought is a condition of lack of rainfall in a certain period of time which can cause water shortages for various activities, groups or environmental sectors (Hatmoko & Adidarma, 2014). One method used to observe the distribution of drought due to the construction of the Cipali toll road in Subang, Indramayu and Majalengka Regencies is to use Landsat 7 and Landsat 8 satellite images processed with Google Earth Engine (GEE). Drought observations can be made using the Normalized Difference Vegetation Index (NDVI) and Normalized Difference Water Index (NDWI) parameters, Land Surface Temperature (LST), rainfall and river density. The data used in this research is Landsat 7 and Landsat 8 Surface Reflectance Level 2, Collection 2, Tier 1 in 2008-2010 and 2016-2018. After the construction of the Cipali toll road in 2016-2018, the percentage change in area shows that the area of the high vegetation density (NDVI), high wetness level (NDWI), and surface temperature (LST) classes increased by 57.86%, 72.40%, and 32.77%. These 3 regions have moderate annual rainfall and low river density. This high increase in NDVI, NDWI and LST areas shows that the construction of the Cipali toll road did not have an impact on drought because the condition of the vegetation after the construction of the Cipali toll road in 2016-2018 was better than before the construction of the Cipali toll road in 2008-2010.