Graduate Program in Environmental Sciences.Akkoyunlu, Atilla.Zakrı, Fawaz.2023-03-162023-03-161993.ESC 1993 Z13https://digitalarchive.library.bogazici.edu.tr/handle/123456789/19330Lake Iznik is located in the southern east part of Marmara region within the province of Bursa . Its water is of a big importance to the region with a Mediterranean climate, and an annual rainfall ranging between 500 - 750 rom, falling mainly in the period from October to March . This water is used in dry season for irrigation . In this thesis, a physical study of the region is conducted . The physical , chemical and biological parameters were examined at several sites in order to determine the eutrophication state and a suitable model was applied to represent the lake . Lake Iznik was found to be very near to the eutrophic state and the limiting nutrient in the lake was found to be the phosphorus element .30 cm.Nutrient pollution of water -- Turkey.Eutrophication -- Control.Lakes -- Turkey -- İznik Lake.xii, 130 leaves;