Geylang River is a canal

Canal

Canals are man-made channels for water. There are two types of canal:#Waterways: navigable transportation canals used for carrying ships and boats shipping goods and conveying people, further subdivided into two kinds:...

ised river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 in Geylang

Geylang

Geylang is a neighbourhood in the city-state of Singapore east of the Central Area, Singapore's central business district. It is located to the east of the Singapore River, an area that locals have associated, from the days of Sir Stamford Raffles, as a Malay kampong opposite facing two islands...

 of the Eastern Region

East Region, Singapore

The East Region of Singapore is one of the five regions in the city-state. It includes six urban planning areas. As its name implies, it is the easternmost region of Singapore.The land area is about 11,000 hectares.-Urban planning areas in East Region:...

 in Singapore

Singapore

Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...

. With the formation of the Marina Reservoir

Marina Reservoir

The Marina Reservoir is a reservoir in Marina Bay, Singapore formed in 2008 from the damming of the mouth of the Kallang Basin. With the completion of the Marina Barrage on October 30 2008, the reservoir, which contained mainly salt water, became freshwater and started operations at 7 pm on...

 after the completion of the Marina Barrage

Marina Barrage

The Marina Barrage is a dam in Singapore built across the mouth of the bay, between Marina East and Marina South. It was officially opened on 1 November 2008[1]...

 in 2008, the river now forms part of the reservoir.

Geylang River begins at Ubi

Ubi

Ubi may refer to:* Ubi Dwyer, founder of the Windsor Free Festival* UBI World TV, Australian digital satellite pay television service.* Ubi, Singapore, also known as Ubi Estate, a residential and industrial area in Singapore...

 as Geylang Canal, continues southwards, but starts turning westwards after Geylang Road, but turns southwards again once it nears Guillemard Road, before turning westwards again after Dunman Road, before emptying into the Kallang Basin near Tanjong Rhu.