Klang River

The Klang River is a Malaysian river that passes through Kuala Lumpur and Selangor before entering the Malacca Straits. It stretches for around 120 kilometers (75 miles) and drains a 1,288-square-kilometer basin (497 sq mi). There are 11 significant tributaries of the Klang River.

Because the river flows through the Klang Valley, a densely populated area with a population of more than four million people, it is heavily polluted due to deep siltation caused by human waste from riverbank squatters and even some businesses without septic tanks or sewage treatment plants, as well as soil carried by mudflows from the mountains. The river has been narrowed by heavy construction to the point where it resembles a gigantic storm drain in certain parts. In Kuala Lumpur, this contributes to flash floods, especially after heavy rain.

The river begins in Ampang Jaya, Selangor, and flows through the city center along the Ampang–Kuala Lumpur Elevated Highway.

Kuala Lumpur is located at the confluence of the Gombak and Klang rivers. Behind Masjid Jamek, the confluence can be found. It then runs south-west via Brickfields, Bangsar, Lembah Pantai, Old Klang Road, and Jalan Puchong, before becoming the Petaling Jaya-Subang Jaya border till PJS7, crossing UEP Subang Jaya, and finally making a U-turn at Puchong and Putra Heights.

The river passes through Shah Alam, the state capital of Selangor, further downstream. The city of Klang is located on the river's lower reaches. The Klang River's estuary is also home to Malaysia's largest sea port, Port Klang.

Upstream of the river are two important dams: Batu Dam and Klang Gates Dam, which give water to the residents of Klang Valley and help to moderate floods.

Length: 120 km (75 mi)