An NDVI analysis is conducted to determine the arrangement of green open space in the riparian zone of Sungai Kahayan, Palangka Raya City

Abstract The configuration of riparian zones is predominantly characterized by moderate vegetation, comprising 43.4%. Deforestation in the riparian zone of the Kahayan River diminishes habitat quality and exacerbates soil erosion. Human activities, such deforestation and mining, can intensify soil erosion along riverbanks, hence increasing flood risks and harming river ecosystems. Riverside communities are susceptible to inundation, particularly during the monsoon season. Floods can impair infrastructure, devastate residences, and result in economic detriment. This study employs a quantitative methodology utilizing a descriptive technique, revealing that the research site comprises water bodies covering 16.6%, low vegetation at 12.2%, medium vegetation at 43.4%, and high vegetation at 27.7%. Based on these findings, the riparian zone of the Kahayan River is characterized by moderate vegetation; therefore, to preserve the ecosystem and hydrological functions, it is essential to plant large tree seedlings to enhance soil protection and augment biodiversity. This study aims to investigate the configuration of riparian tree habitat (RTH) along the Kahayan River in Palangka Raya City, utilizing Geographic Information System (GIS) analysis alongside the Normalized Difference Vegetation Index (NDVI) for assessing vegetation density and the spatial distribution of settlements in the area. The findings of this analysis influence the management of flood risk, environmental degradation, and improved RTH planning in Palangka Raya.