Abstract
Madura Strait, located between Java and Madura is an area heavily impacted by human activities that cause waste to enter the ocean waters. Total Suspended Solids (TSS) is an important water quality parameter that affects the optical properties of water. This study aims to analysis the spatial distribution and concentration of TSS at a depth of ±0.3 m in the Madura Strait using Sentinel-2A imagery with a spatial resolution of 10 m. The field survey data for this study consisted of 27 points. The bands used include single bands and ratio bands. Correlation tests were used to determine the relationship between the bands and field TSS if a band exceeded the significance threshold, it was included as an input variable in the regression analysis. Regression analysis was used to develop the best empirical model, B4/B2 was identified as the best empirical model with an R² value of 0.8923. Spatial analysis revealed higher TSS concentrations in coastal zones influenced by river flow, while mid ocean area showed lower values. Based on 27 survey points, the total estimated TSS on January 14, 2026, was 3.4 metric tons.