
Lake Rudnickie Wielkie

Lake Rudnickie Wielkie is a lake located within the boundaries of Grudziądz, Poland. It has a surface area of and a maximum depth of , and the water surface is above sea level. The average duration of the ice cover on the lake in the years 1960–1970 was 130 days. In 1982 two pipelines, long, were laid at the bottom of the lake, and on 16 September 1990 a third, pipeline was laid, in order to discharge the surviving anaerobic bottom waters into the Rudniczanka River.
There are numerous holiday resorts, sport and tourism equipment rentals, small catering facilities, campsites, beaches, rowing marinas and sailing centres on the shores of the lake. It is surrounded by forests. It is a place willingly visited by the people of Grudziądz and beyond, both in summer and in other seasons.