This study was carried out to determine the seasonal changes in the natural habitat (water and mud) characteristics of the suoku (Sagittaria sagittifolia L.) plant. For this purpose, it was determined that the plant naturally grows in Gölbaba Lake and the samples required for analysis were taken from this lake in 2022 in 3 replications in June, August and September. In water samples: pH, Conductivity (dS/m), Carbonate (mg/l), Bicarbonate (mg/l), Chlorine (mg/l), Sulfate (mg/l), Nitrate (mg/l), Nitrite (mg /l), Ammonium (mg/l), Magnesium (mg/l), Potassium (mg/l), Sodium (mg/l), Calcium (mg/l), Sodium Adsorption Rate (SAR), Hardness and Salinity parameters were examined. In soil samples, pH, Conductivity (dS/m), Organic Matter (%), Phosphorus (kg/da), Magnesium (mg/l), Potassium (kg/da), Sodium (mg/l), Calcium (mg/l) l), Lime (%) and Saturation (Constituent) parameters were examined. As a result of the research, it was determined that the lake water was high salty, medium sodium water quality according to the Water Pollution Control Regulation, and the lake soil was heavy textured, salt-free, medium limy, and slightly alkaline. It was determined that all parameter values examined in both water and soil samples changed according to the sampling time.