<p>In this study, limnological features were determined in 3 lagoon lakes at seasonal intervals in 2020 in the Enez Lagoon Complex (Edirne, Türkiye). Water and sediment samples were taken from a total of 6 sampling stations. Both physicochemical features (pH, dissolved oxygen, water temperature, conductivity, salinity, TDS (total dissolved solids), chlorophyll-a, Secchi Disk, nitrite, nitrate, phosphate, sulfate, fluoride, chloride, B, Na, Mg, Al, K, Ca, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Cd, Sb, Ba, Tl, Pb) and biological components were investigated. A total of 47 zooplanktonic taxa (22923 ind/m³); 97 phytoplanktonic taxa (1679 ind/ml); 24 benthic macroinvertebrate taxa (3088 ind/m²) were recognized. The salinity, conductivity, and TDS results showed that the lagoon complex has brackishwater features. According to the surface water resources control regulation the parameters pH, water temperature, and dissolved oxygen were found to have acceptable limits; ion concentrations were found at acceptable limits at all sampling stations and all sampled seasons except Boron in the winter season (minimum 1726.5 ppb, maximum 6031.9 ppb), and the values of nutrients exceeded at times during the year. These observations emphasize the limnological richness of the lagoon complex and its worth for monitoring environmental changes.</p>