Simanggang is a town and the capital of Sri Aman District and Sri Aman Division in Sarawak, east Malaysia. Located on the Lupar River, it is 193 kilometres (120 mi), a three-hour drive, from Kuching, the capital of Sarawak. It is a trade center for the timber, oil palm, rubber, and pepper of its mostly agricultural district.

Simanggang is famous for the benak, or tidal bore, of the Batang Lupar River. The tidal bore comes in from the river mouth and fills up the river very rapidly in the course of about 10 minutes. The wave crest at Simanggang is up to two to three metres (7 to 10 ft) high. This is one of approximately 48 rivers and estuaries in the world where this phenomenon happens. What is special about Simanggang's benak is that it occurs every day, the only river in the world that does that.

There is a timetable at the river which has the time and dates for when the tidal bore will occur, but the really big ones occur only a couple of times a year. The author Somerset Maugham almost died at Simanggang during one of these tidal bores, an event commemorated the event in his short story The Yellow Streak.

Simanggang is also a gateway for tourists to the Batang Ai National Park, and cultural tours to the Iban longhouses along the rivers.

Etymology

The town of Simanggang was known for the same name until 1973. Following the memorandum of understanding (MoU) signed in October 1973 between government of Sarawak and Communist members to end the armed conflict in southern Sarawak, the name of the town was changed to "Sri Aman" while the administrative division was renamed as Sri Aman Division in March 1974. Sri Aman means "town of peace" in the Malay language. In 2019, the town reverted to its old name "Simanggang" according to the wishes of the local residents. However, the administrative division retains its "Sri Aman" name.

History

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Geography

Simanggang has a tropical rainforest climate (Af) with heavy to very heavy rainfall year-round.

Demography

Sri Aman District Ethnic Statistic

Total Population	Malay	Iban	Bidayuh	Melanau	Other Bumiputera	Chinese	Indian	Other Non-Bumiputera	Non-Citizen
64,500	16,418	37,666	457	154	379	8,614	70	120	622

According to the 2010 Malaysian census, Sri Aman has a total population of 64,500. Indigenous people form the largest ethnic group in the city which consists of Iban , Malay, other indigenous tribes. This is followed by Chinese, non-Malaysians Indians, and Others.

Transport

Local Bus or Bus Express remain unclear

Route No.	Operating Route	Operator	Remark
K25	Kuching-Sri Aman	CPL

Other utilities

Education

Secondary school

• SMK St Luke (M)
• SMK Sri Aman
• SMK Simanggang
• SMK Melugu
• SMK ENGKILILI
• SMK LUBOK ANTU
• SMK LINGGA

Primary school

• SK Abang Aing
• SK Melugu
• SK Temudok Kem Pakit
• SJK (C) Chung Hua Undop
• SJK (C) Chung Hua Simanggang
• SJK (C) Chung Hua Pantu
• SJK (C) Chung Hua Lingga
• SJK (C) Chung Hua Bangkong
• SK St Lawrence Sabu
• SK Sri Aman
• SK Selepong
• SK Engkilili

Healthcare

Sri Aman II hospital started operation since September 2022.

Leisure and conservation areas

Fort Alice

• 
  Fort Alice side view.
• 
  Fort Alice in 2010, before restoration work.
• 
  Fort Alice in 2010. The fort has since been renovated and opened as a museum in 2015.

Fort Alice, built in 1864, is the oldest heritage building in Simanggang, constructed following the victory of Rajah Charles Brooke, the second Rajah of Sarawak, over Rentap, the last of the major Iban chieftains, in 1864. The Fort was named after Charles Brooke's wife, Margaret Alice Lili de Windt. It served as a defensive structure controlling the Lupar River.

The structure was built on a strategic hilltop position and had a commanding view of the river with cannons bearing down to stop any threats coming from upriver. It played a major role in suppressing piracy, slavery, and head-hunting, while encouraging trade and expanding the authority of the Rajah. Fort Alice was the Simanggang administrative center, housing various government departments and even a prison.

It was here Rajah Charles used to preside as judge settling disputes among the local Ibans during his many visits to Simanggang. It was built entirely of belian (ironwood) timber. Much of the timber used was taken from an earlier fort, Fort James Brooke, which had been built further upriver in Nanga Skrang. However, Fort James was built on lowland and was hard to defend, as was proven in 1853 when one of the Rajah's officers, Alan Lee, died in an attack by the Iban chieftain Rentap.

It was decided to dismantle Fort James and to rebuild it in a more strategic and more defensible site in Simanggang District (now Sri Aman Division). Thus Fort Alice was built. Most of the original structure remains substantially intact, but it is in an extremely dilapidated and run down condition and in need of urgent restoration work. Many articles have been written to highlight the sorry state of the grand old lady. Restoration for the fort had been done in April 2015 and been changed into a museum.