Dynamic modeling for controlling the water quality of Situ Cibuntu effluent

Situ is a very small lake which has function as a water source, flood control, and fishery. Situ Cibuntu situated at Cibinong is one of the numerous small lakes located in Jabotabek. The problem that occurin the situ is euthropication where nutrien enter into water body. Chemical parameters observed are DO, BOD, N-total and P­ total, N-organic, ammonia, nitrite and nitrate. Physical parameters are water temperature, depth, discharge and chlorophyll-a. The av­ erage discharge is 3.135 m³/day, water temperature in clearweather is 28.2 °C and in rainy weather is 26.6 °C. The average DO is 5.67 mg/L, BOD is 16.55 mg/L, N-total 1.95 mg/L and P-total 0.39 mg/L and average chlorophyll-a 0.051 ag/L