This is a 127 km2, uniquely interesting area on the Great Hungarian Plain, made by damming up the Tisza. The width is 6 to 8 km, the speed of the Tisza crossing it is 1.1 to 3.9 km/hour, depth 1 to 2.5 m.
When moving about Lake Tisza, it is possible to get to the open water surface along the so called flushing channels opening to the main basin, where logs and reefs can make it difficult to navigate. In times of flood, the entrances of the channels are closed by lock gates. The lake consists of four parts: the upper one is the Tiszavalki-bay up to the dike with the railway and public road. This is a protected reserve for birds, and it is only possible to approach by boat. Downstream from the dike is the larger area of the Tiszafüred-Sarudi-bay, then the strait at Tiszaderzs and lastly, the Abádszalóki-bay of 14 km2 which is the most suitable for water sports; and this is a water surface where the use of any motor-driven sports craft is permitted. The middle part of the lake is a real paradise for anglers, the biggest continuous water surface for anglers in Hungary with more than fifty species of fish, including twelve protected species.
Hunters visit the woods in the submerged area along the shore because of the abundant stock of game.
It is forbidden to bathe at a distance of more than 500 m from the shore on the entire area of Lake Tisza if unaccompanied by a boat or vessel of some sort. Those touring the lake are urged to use the detailed water sport maps.