Sungai Langat

About Sungai Langat


Sungai Langat is 120km long and originates from the Main Range. It drains westward to the Straits of Malacca. The major tributaries of Sungai Langat are the Sungai Semenyih and Sungai Labu.

According to local history, Sungai Langat was the main source of communication and transportation between the locals and foreign traders during the early days. The locals would travel to the mouth of theriver where barter posts were set up to enable trade between them and the foreigners.

In the year 2000, the Selangor State Government and the Department of Environment (DOE) adopted Sungai Langat in an effort to preserve the river and to improve the river's water quality through extensive clean-up operations, controlling the discharge of effluents into the river as well as conducting frequent checks on the level of water quality.

The water quality for Sungai Langat is currently rated as Class IIB (suitable for recreational use without treatment), and this rating is targetted to be raised to Class IIA (suitable for use as water supply with conventional treatment) by the year 2004.

Sungai Langat Dam

















Dam capacity 33,785 million liters.

Treatment treatment plant (Sungai Langat WTP)

capacity = 386 million liters per day (mld). Area

served : Hulu Langat, Cheras.


Lembangan Sungai Langat meliputi Negeri Selangor, Putrajaya serta sebahagian kecil Negeri Sembilan dan Wilayah Persekutuan Kuala Lumpur. Luas kawasan Lembangan Sungai Langat adalah 2,423 km2 (lembangan sungai yang terbesar di Selangor).Panjang Sungai Langat adalah 200 km.

PBT di dalam Lembangan Sungai Langat:

· Majlis Perbandaran Kajang (MPKj)
· Majlis Perbandaran Sepang (MPSp)
· Majlis Daerah Kuala Langat (MDKL)
· Majlis Perbandaran Ampang Jaya (MPAJ)
· Majlis Perbandaran Subang Jaya (MPSJ)
· Majlis Perbandaran Nilai
· Perbadanan Putrajaya (PPj)

Tiga buah anak sungai utama:

· Sg Semenyih (236 km2)
· Sg Labu (220 km2)
· Sg Beranang (325 km2)

Anak-anak sungai yang lain:

· Sg Mersing
· Sg Pangsoon
· Sg Lolo
· Sg Lopo
· Sg Congkak
· Sg Perdek
· Sg Lui
· Sg Semungkis
· Sg Gahal
· Sg Tekali
· Sg Michu
· Sg Sub
· Sg Betong
· Sg Serai
· Sg Perimbum
· Sg Raya
· Sg Cheras
· Sg Long
· Sg Sekamat
· Sg Balak
· Sg Merbau
· Sg Jeloh
· Sg Ramal
· Sg Rekoh
· Sg Jenderam
· Sg Chua
· Sg Belus
· Sg Semarang
· Sg Batang Nilai
· Sg Batang Benar
· Sg Jijan
· Sg Cincang
· Sg Salak
· Sg Air Hitam
· Sg Tekala
· Sg Batangsi
· Sg Saringgit
· Sg Rinching
· Sg Beranang Sg Kabul

Langat Basin

Langat Basin is located in south of Selangor and north of Negeri Sembilan within latitude 2"40'U to 3"20'U and longitude 101"10'E to 102"00'E with the geographical area extent of around 2,394.38 km2 (Figure 1).

Geographical properties:

Longitude at River Outlet: 101° 17´ and 101° 58´ E
Latitude at River Outlet: 2° 44´ and 03° 16´ N
Area of River Basin: 2938 km2
Length of River: 120 km long
Altitude Range: 914 m
Average Annual Rainfall: 2469 mm or 1521–2883 mm
Average Rain days: 190
Average Temperature: 32° C
Average Humidity: 80%

The Langat River Basin is separated from Klang River Basin in the north, south and east by a series of highland ranges where the highest points are at Bukit Arang (560 m), Bukit Batu Bulan (1,008 m), Bukit Resam Ambat (1,149 m), Bukit Hitam (1,210m), Bukit Sebarau Chinchang (949 m), Bukit Angkau (1,055 m) Genting Jemelot (916 m), Bukit Sg. Puteh (409 m), Bukit Cennang (820 m) and Nuang Mountain (1,493 m). The average height of the highland ranges is about 960 meters (Anon, 1998). [Please note that the Malaysian terms of ‘bukit’ means hill and ‘gunung’ means mountain].

Demographic properties:

General location of the basin:
The Langat River Basin lies in the mid western part of Peninsular Malaysia and involves two states viz. Selangor State and Negeri Sembilan State, part of the Klang River Valley and now also includes the Putrajaya Federal Government Administrative Center. In Selangor it spans the districts of Sepang, Hulu Langat and Kuala Langat. In Negeri Sembilan it spans four mukims (sub district) of the western portion of the district of Seremban, namely Seremban, Labu, Lenggeng and Setul.

Total population in the Langat Basin was 1,184,917 million in 2000.