Lake Tai (; literally "Grand Lake") is a large lake in the Yangtze Delta plain, on the border of the Jiangsu and Zhejiang provinces. With an area of 2,250 km² and an average depth of 2 metres, it is the third largest freshwater lake in China, after the Poyang and Dongting Lakes. The lake houses about 90 islands, ranging in size from a few square meters to several square miles. Lake Tai is linked to the renowned Grand Canal. The lake is also the origin for a number of rivers, including Suzhou Creek.