ABSTRACT: Access to clean water is becoming increasingly difficult as a result of global climate change, industrialization, fast population expansion, and other factors. To safeguard fresh waters, natural lakes such as wetlands are protected,and storage water structures are erected on streams. The most important aspect influencing the life of storage water structures is the determination of the sediment entering the water reservoir. This material builds in the dam reservoir, reducing the amount of usable water and rendering essential elements such as the bottom weir or water in take structure inoperable. The spatial distribution and temporal variation of TSS were investigated in this study by using the parameters of Total Suspended Sediment (TSS), which were produced by creating a model between satellite data and terrestrial data, and Sentinel-2 satellite data from Seyhan Dam Lake, which is located in the south of Turkey,within the provincial borders of Adana. The maximum TSS concentration was determined to be 25.01 mg/L on 26.03.2020, with the lowest value being 17.65 mg/L on 23.01.2021. The TSS characteristics will be more precisely determined by samples from additional places at previously known satellite transit times, as a foundation for a system to be created for remote sensing-based TSS monitoring in the Seyhan Dam Lake. TSS values for the whole lake surface will be determined in this manner rather than TSS values for specific spots.