The Kallang River (Chinese: 加冷河, Pinyin: Jiālěng Hé) flows for 10 kilometres from the Lower Peirce Reservoir to the coast at Nicoll Highway, making it the longest river in Singapore. The river mouth was traditionally at Kallang Basin, although extensive land reclamation around the area meant the river only flows into the open sea via the Marina Channel between Marina Centre and Marina East.
In pre-colonial times, the original inhabitants of Singapore, the aboriginal biduanda orang kallang, lived in the swamps at the mouth of the Kallang River, and fished from their boats, seldom venturing out into the open sea. At the time when Sir Stamford Raffles landed in Singapore in 1819, half of the population of 1,000 were orang kallang.
Kallang River is the place, too, where in the early days the Bugis traders from Sulawesi (Celebes) unloaded their cargoes of spices and tortoise shells, gold dust and slaves from their palari or their leteh-leteh. These sailing boats were a common sight off the sea front even up to the 1960s.
Kallang River is now transformed into part of the water catchment area for the Marina Reservoir. A new dam, the Marina Barrage, was built at the mouth of the Marina Channel at Marina South. With the completion of the Marina Barrage in 2008, the entire region comprising the basins of the Singapore River, Rochor River, Geylang River and Kallang River will be transformed into a water catchment area.
The "demonstration project" by the National Parks Board (NParks) and the Public Utilities Board (PUB) is part of the Active, Beautiful and Clean Waters Programme to transform rivers and reservoirs into vibrant community hubs, and to get Singaporeans to cherish and take care of their waterways. NParks and the PUB reviewed some of the world's best rivers such as the Charles River in the United States and the Cheonggye Stream in Seoul to draw inspiration and learn best practices.
By August 2007, the Kolam Ayer stretch of the river will be transformed to include more greenery, floating decks, pathways and boardwalks for recreational activities. A water wheel will be introduced as the centrepiece of the project. The water level will be kept at a constant level — 3 metres deep — making activities such as kayaking and dragon boating possible.
Kallang River @ Bishan Park
The Kallang River starts at Bishan Park. Officially opened on 17 March 2012 by Prime Minister Lee Hsien Loong, the meandering river's capacity is now 40% more than when it was a canal. The river helps to slow the flow of rainwater so that downstream waterways have more time to drain. Bio-engineering techniques such as Soil bioengineering and intensive hydraulic calculations were applied to create this. Besides slowing down rainwater, it now also offers residents a new recreational experience – soft planted river banks encourage people to get close to the water.
- Norman Edwards, Peter Keys (1996), Singapore - A Guide to Buildings, Streets, Places, Times Books International, ISBN 9971-65-231-5
- Today, Making a splash with $2.5m, 17 April 2006,