DAVRAZ, Ayşen Süleyman Demirel University - Department of Geology, Turkey , ŞENER, Erhan Süleyman Demirel University - Remote Sensing Centre, Turkey , ŞENER, Şehnaz Süleyman Demirel - Department of Geology, Turkey , VAROL, Simge Süleyman Demirel University - Water Institute, Turkey

Water Balance of the Eğirdir Lake and the Influence of Budget Components, Isparta,Turkey

25384

Water budget of lakes must be determined regarding to their sustainable usage as for all water resources. One of the major problems in the management of lakes is the estimation of water budget components. The lack of regularly measured data is the biggest problem in calculation of hydrological balance of a lake. A lake water budget is computed by measuring or estimating all of the lake’s water gains and losses and measuring the corresponding changes in the lake volume over the same time period. Eğirdir Lake is one of the most important freshwater lakes in Turkey and is the most important surface water resources in the region due to different usages. Recharge of the Eğirdir Lake is supplied from especially precipitation, surface and subsurface water inflow. The discharge components of the lake are evaporation and water intake for irrigation, drinking and energy purposes. The difference between recharge and discharge of the lake was calculated as 7.78 hm³ for 1970-2010 period. According to rainfall, evaporation and the lake water level relations, rainfall is dominantly effective on the lake water level such as direct recharge to the lake and indirect recharge with groundwater flow.

27

Eğirdir Lake , Water balance , Lake water level , Rainfall

Journal Of Natural an‎d Applied Sciences

36