Kallang Basin (Chinese: 加冷盆地; Malay: Lembangan Kallang) is an enclosed bay in Kallang, Singapore. The Kallang River, Rochor River and Geylang River empty into the Kallang Basin. The Marina Channel connects the Kallang Basin with the Singapore Straits.
At present, the Kallang Basin forms part of the Marina Reservoir, so do the rivers that flow into the Kallang Basin and their tributaries. The reservoir has a catchment size of nearly one-sixth of mainland Singapore's land area.[1] The Kallang Basin is a popular location for water sports, in particular, kayaking and dragon boating.
Today, the area surrounding the body of water is also frequently called "Kallang Basin". The term has been applied to the industrial estates along Kallang Bahru, the Kallang Basin Swimming Complex, amongst others.