Johor River

The Johor River is the most important river in Johor, Malaysia. The river, which originates from Mount Gemuruh and empties into the Strait of Johor, is 122.7 km long and has a catchment area of 2,636 km2. It flows roughly north–south. Sayong, Linggiu, Tiram, and Lebam Rivers are its primary tributaries. Its banks have also served as the site of past Johor capitals, the Johor Lama. The Sungai Johor Bridge, which opened in June 2011 and is now Malaysia's longest river bridge, was the first to span the river.

The Johor River basin covers around 14 percent of Peninsular Malaysia's Johor State. The river and its tributaries are vital water sources not just for the state but also for Singapore. The Public Utilities Board of Singapore (PUB), Syarikat Air Johor, and SAJ (or Johor Water Company) each pull roughly 250,000 cubic metres of water each day from the Johor River near Kota Tinggi. Since the mid-1960s, both water supply schemes have been functioning. Furthermore, the Linggui Dam, which was built and impounded in 1993, provides additional water to both Johor and Singapore.

Between 1974 and 1989, researchers obtained evidence of a robust breeding population of dugongs in the waters of the Johor River estuary.

Length: 122.7 km (76.2 mi)