Sustainability analysis of Upper Brantas Subwatershed

Abstract

Watersheds play an essential role in the sustainability of water resources, facing challenges such as pollution and unintegrated management. The Brantas River, especially the Upper Brantas subwatershed, is one of the primary water sources in East Java that is threatened by pollution due to household waste disposal. This study aims to analyze the sustainability of the Upper Brantas sub-watershed. Secondary data were collected from various sources between 2018-2022, including water quality, the Human Development Index, and analysis of natural vegetation cover. Primary data on policy implementation were collected using questionnaires. Data analysis used the watershed sustainability index. The results showed that the Upper Brantas sub-watershed had a sustainability index value of 0.54, which is classified as moderate.