Niegocin (in German Löwentinsee) is a glacial lake in the Great Lakes Land which is located in the Voivodeship of Warmia and of Masuria. This lake has an area of 2604 hectares and a depth of up to 39.7 metres. Niegocin is the third water area from the point of view of its size in the Great Masurian Lakes Land. In the North, the lake Niegocin merges through canals with the lake Kisajno (which is a part of the Lake Mamry). Those who want to navigate across the lake Kisajno may choose two ways. The first route consists of the eastern Canal of Giżycko, which leads to Giżycko. The second route leads through the Canal of Niegocin to the lake Tajty and further through the short Canal Piękna Góra. In the South, through six lakes and canals (Lake Boczne , Canal Kula, Lake Jagodne, Lake Szymoneckie (actually a bay of Lake Jagodne), Canal Szymoński, Lake Szymon, Canal Mioduński , Lake Kotek Wielki, Canal Grunwaldzki, Lake Tałtowisko, Canal Tałcki) one may reach the Lake Tałty and while navigating further the JLake Mikołajskie and the Lake Śniardwy. Giżycko is located on the northern bank of this lake and Wilkasy is situated on its western bank. A navigable route goes from Giżycko to Mikołajki through Lake Niegocin and further to Ruciane-Nida and to Pisz. Here one is thinking of the Lake Boczne located to the southwestern bank (on the route to Mikołajki) and of the Lake Niałk located to the southeastern bank. In the eastern part of this lake, there an island called Grajewska Kępa.