Vegetation Monitoring through a Web-based Satellite Image Modification Process for Hydroelectric Reservoir & Watershed Area

Terrestrial vegetation is a part of the regulatory function of upstream currents that are a precautionary form against erosion and may reduce the level of sediment entering the water. Other monitoring also needs to be done to the water hyacinth in a reservoir. It is a vegetation of the surface of the water that forms a "floating islands," thus blocking the flow of water and damaging the engine, such as hydropower turbines. Cirata hydroelectric power plant has an 1,836 km2 of water catchment area, including a reservoir area of 62 km2. The aim of this research was to provide a vegetation monitoring solution more easily than manually. Monitoring of satellite images usually requires a desk-based application to be processed by GIS Software (Geographic Information Systems). Optimization is done by modifying the process from desktop to web to facilitate the user and device needs. The frequency for monitoring of terrestrial vegetation is done periodically each year, while the water's surface vegetation is done periodically each week. The results of vegetation monitoring indicate that there is a cumulative deforestation of 3,608.04 hectares in the catchment area from the monitoring period of 2000-2021. As for the vegetation on the water's surface, it's a range of up to 400 hectares. Data monitoring will be useful to develop control strategies in context for the management of biodiversity and mitigating the effects of water hyacinth for hydroelectric power plant.