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

Ayşen DAVRAZ, Erhan ŞENER, Şehnaz ŞENER, Simge VAROL
1.682 811


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.

Tam metin:



Allen, R.G., Pereira, L.S., Raes, D., Smith, M., 1998. FAO-56: Crop Evapotranspiration, Guidelines for Computing Crop Water Requirements. FAO Irrigation and Drainage, Paper No, 56, 326 p, Rome.

Atay, R., Bulut, C., 2005. Project of Water Pollution in the Beyşehir, Eğirdir, Kovada, Çivril ve Karakuyu (Çapalı) Lakes, Ministry of Agriculture and Village Affairs Eğirdir Fisheries Research Institute Project Report, 225 p.

Bocanegra, E., Quiroz Londono, O.M., Martınez, D.E., Romanelli, A., 2013. Quantification of the Water Balance

Groundwater–lake Interactions in the Pampa Plain, Argentina. Environmental Earth Sciences 68(8), 2347-2357 Processes

of Cook, P.G., Wood, C., Brunner, P., 2008. Groundwater Inflow to a Shallow, Poorly-mixed Wetland Estimated From a Mass Balance of Radon. Journal of Hydrology 354, 213-226.

Davraz, A., Karagüzel, R., Soyaslan, I.I., Şener, E., Seyman, F, Şener, Ş., 2009. Hydrogeology of Karst Aquifer Systems in SW Turkey and an Assessment of water Quality and Contamination Problems. Environmental Geology, 58, 973–988.

Davraz, A., Şener, Ş., Şener, E., Kesici, E., Polat, E., Gündoğdu, V., 2012. To Form of Water Quality Sustainable Management in the Drinking Water Basins Using Geographic Information System; The