Palić lake is a shallow Pannonian lake near Subotica. It is part of a protected natural park that sticks within 3^ category protection and includes a lake and part of the Palić village, with a total area of 713 hectares and 869 hectares safety zone. Water depth varies according to the season between 1-2 m. It's a popular tourist destination, with 3 separate beaches covering 23,8 km , and shallow waters averaging 1.9 m in depth. It is situated in the midst of a mild continental climate and receives an average of 2,100 hours of sunshine per year, with an average summer temperature of 20°C. As early as the end of the last century the Lake’s vegetation begun to increase and water levels to recede, affected by increased temperatures, changing wind patterns and the presence of waste water.
By the summer of 1970, a shortage of oxygen caused by uncontrollable algal bloom resulted in the death of all living organisms in the Lake. By 1971 the lake had completely dried up. Its mud was removed, a waste-water purifier built and in 1976 the lake was refilled with water and monitored carefully. In addition the Tisa - Palic canal was installed in 1995, greatly improving the Lake’s water quality.
Palic Lake is again under threat, as the result of communal and industrial wastewaters. Revenue generated from citizens’ payment of increased water fees and the enlargement of the purifier have not been able to improve the situation significantly, and the Lake bottom is now covered in nearly 1 m of mud.
Three years ago, Regional Institute for the Protection of Nature have done the revision of lake protection, prepared a new study, re-evaluate the condition of the lake and changed the ordinance on the protection in order to be complied with current legislation and EU legislation.
But the sewage system it's not the only problem, because as elsewhere in Vojvodina, a coastal part of the arable land is threatened by pesticides and herbicides. The ecosystem can not function without the coastal part and one part of it has already been destroyed. The platform for Palićko lake rehabilitation was formed by a working group nominated by the mayor and is made up of professional people from Subotica. The platform's goal is to solve infrastructure problems in the coastal part as well the waste disposal site, which threatens the ecosystem of the lake. Environmental sanitation should start within a year by discharging water from the lake, with the construction of pipelines and pumping stations; project documentation is expected to be ready in 2014. In July 2014 activities to prepare the area for the temporarily fish houseing started, which represent the first concrete steps in the process of remediation.