The geographically small island nation of Singapore has few rivers of significant lenth or width, the longest of which, the Kallang River is only ??km in length. The Singapore River, arguably the most famous in the country, is of insignificant length as well. However, the country's tropical climate and heavy rainfall require a very comprehensive network of natural draining systems, much of which has become concrete system as urbanisation spread across the island.

Natural rivers

In natural state (at least in part)

• Changi Creek
• Kallang River
• Sungei Apek
• Sungei Api Api
• Sungei Bajau
• Sungei Bajau Kanan
• Sungei Blukar
• Sungei Buloh Besar
• Sungei Buloh Kechil
• Sungei Changi
• Sungei Choa Chu Kang
• Sungei Dekar
• Sungei Gedong
• Sungei Jelutong
• Sungei Jurong (upper reaches dammed as Jurong Lake)
• Sungei Kangkar
• Sungei Khatib Bongsu
• Sungei Loyang
• Sungei Mandai
• Sungei Mandai Kechil
• Sungei Melayu
• Sungei Mingski
• Sungei Perempan Besar
• Sungei Peng Siang
• Sungei Pinang
• Sungei Poyan (lower reaches dammed as Poyan Reservoir )
• Sungei Sawa
• Sungei Selarang
• Sungei Seletar (lower reaches dammed as Lower Seletar Reservoir )
• Sungei Simpang
• Sungei Simpang Mak Wai
• Sungei Tengah
• Sungei Tha Pek Kang
• Sungei Yuchi

Canalised

• Alexandra Canal
• Geylang River
• Rochor Canal
• Rochor River
• Siglap Canal
• Singapore River
• Stamford Canal
• Sungei Bedok
• Sungei China
• Sungei Ketapang
• Sungei Lanchar
• Sungei Pandan (lower reaches dammed as Pandan Reservoir )
• Sungei Pinang (Hougang)
• Sungei Punggol
• Sungei Seletar Simpang Kiri
• Sungei Sembawang
• Sungei Serangoon
• Sungei Simpang Kanan
• Sungei Tampines
• Sungei Ulu Pandan
• Sungei Whompoe

On offshore islands

Pulau Tekong

• Sungei Belang
• Sungei Chek Mat Nah
• Sungei Pasir
• Sungei Permatang
• Sungei Sanyongkong
• Sungei Seminei
• Sungei Unum

Pulau Ubin

• Sungei Asam
• Sungei Batu Kekek
• Sungei Besar
• Sungei Jelutong
• Sungei Mamam
• Sungei Puaka
• Sungei Pulau Ubin
• Sungei Teris
• Sungei Tiga
• Sungei Wat Siam

Former rivers

Dammed and flooded

• Sungei Chik Abu - flooded and part of Lower Seletar Reservoir
• Sungei Puaka - flooded and part of Lower Seletar Reservoir
• Sungei Kranji - now the Kranji Reservoir
• Sungei Sopok - flooded and part of Lower Seletar Reservoir
• Sungei Tengeh - now the Tengeh Reservoir

Reclaimed

• Sungei Blakang Mati (on Sentosa)
• Sungei Hj. Isa
• Sungei Kadut
• Sungei Kechek
• Sungei Seletar Simpang Kanan
• Sungei Sembawang Kechil
• Sungei Serangoon Kechil
• Sungei Simpang Kiri
• Sungei Seletar Tengah (off Sungei Serangoon )
• Sungei Taib