Distribution of phosphate concentration and its impact on fertility of Jatigede reservoir Sumedang, West Java

Abstract

Jatigede Reservoir is located in Sumedang Regency by damming the flow of the Cimanuk River, which carries a pollutant load in the form of domestic waste and agricultural waste. The waste resulted in a high concentration of phosphate in the Jatigede Reservoir. This research aim is to determine the level of water fertility based on the distribution of phosphate concentration on Jatigede Reservoir, Sumedang. The research was conducted from August 2020 to March 2021 using the survey method. Sampling was carried out at six stations at three water depths, surface, half-compensated depth, and compensated depth. The water parameters observed included physical parameters (temperature) and chemical parameters (pH, dissolved oxygen, nitrate, and phosphate). Spatial analysis to describe the distribution pattern of phosphate concentration in Jatigede Reservoir using ArcGIS 10.3.