|Max. length||29.5 km (18 mi)|
|Max. width||21.1 km (13 mi)|
|Surface area||316.2 km2 (100 sq mi)|
|Average depth||3.78 m (12 ft)|
|Max. depth||4.58 m (15 ft)|
|Water volume||1,196×106 m3 (42.2×109 cu ft)|
|Surface elevation||15 m (49 ft)|
Longgan Lake（simplified Chinese: 龙感湖; traditional Chinese: 龍感湖; pinyin: Lónggǎn Hú）is a freshwater lake in China, divided between Susong County of Anhui Province and Huangmei County of Hubei Province. The lake is situated near the north bank of the middle reaches of Yangtze River, opposite Poyang Lake (which is south of the Yangtze).
At present, the lake's water surface area is 316.2 km2. It is an important marsh protective area.