Mapping land use and surface water quality for urban clean water resource

Abstract

The population growth and water needs, cumulated with climate change will aggravate the global water scarcity crisis. Surakarta city initiated to use their three rivers across the city as one of the surface water resources to ensure water availability and preserve the environment. This paper aims to give an understanding of the riverbanks' land use characteristics and river water quality in Surakarta's three major rivers. The land use data was gathered from satellite images, while the river water quality was gathered from secondary data. Spatial grouping analysis by geographic information system was used to examine the characteristic based on land use and water quality in three major rivers across Surakarta. The results show that there are some different typologies of land use that affect water quality. Therefore, the government needs to improve the land use management to improve the surface water capacity to become one of the urban clean water resources.