Areas along the shore, which are mostly characterised by marshy plains with slender alluvial valleys that extend to the major rivers, are the exception.

[8] With multiple offshore installations and pipeline connections, the district is situated on the northwest coast of Borneo, is a vital hub for the nation's oil and gas sector.

In Belait, Melastoma malabathricum was the most associated species, and Rhizophora apiculata had the highest regeneration rate with 3,540 seedlings per hectare.

As a result, the State of Brunei was reduced to approximately 2,226 square miles, with a pre-1947 population of 40,670 (based on preliminary census figures for 1947).

The Assistant Resident post was reinstated in response to the oil discoveries in the Belait District in order to handle the region's growing demand.

Local sanitation and related issues are overseen by sanitary boards in Brunei Town, Tutong, and Kuala Belait.

The region starts from a position on the Belait River estuary, travels north toward the China Sea, and passes by certain locations, such as the Istana Manggalela and the sewage disposal facility owned by Brunei Shell Petroleum (BSP), before circling back along the Belait River to the beginning point.

[24] Despite their varied cultural histories and original non-Muslim status, seven indigenous ethnic groups—including the Belait people—were merged into a single Malay identity in 1961 with the passage of the Nationality Act.

Some notable non-Muslim minorities including the Belait people maintain their historical customs in spite of Islam's supremacy.

In 2022, Eid al-Fitr and Adau Gayoh were jointly celebrated in Belait District, which represent the blending of national identity with ancient rituals and promote unity, have become more common in public settings in recent years.

[25] The government has invested approximately B$600 million in the 2007–2012 National Development Plan (RKN) to enhance road networks, including highway projects, paving, maintenance, and resurfacing.

[30] The railway was promptly reactivated to move artillery and ammunition after being freed in July 1945 by the Australian Army's 9th Division.

[34] Further upriver in Kampong Sungai Duhon, the commercial port can only handle shallow draft vessels because to silting.

[39] Furthermore, military helicopter operations are supported by a heliport at the Medicina Lines' British Army Jungle Warfare Training School,[40] which is run by No.

In addition, the 32 wells in the 60 kilometers northeast of Seria Magpie field have been producing 6,000 barrels of oil a day since 1977.

[48] Located 45 km northwest of Seria, BSP found and is projected to produce an estimated 30 million barrels over the course of 15–20 years from the Egret oil field.

Situated in SPARK,[51] Brunei Fertilizer Industries (BFI) is a government-owned enterprise that produces 1,365,000 tons of urea yearly,[52] making it one of the largest fertiliser plant in Southeast Asia.

[55] In 2021, Belait District produced 0.17 metric tonnes of freshwater fish, with a retail value of B$0.002 million.

[56] With meshes ranging from 4 to 26.5 cm, andang karan is used to catch fish in the open coastal waters near Belait District.

[61] The nation has been increasing its piped water supply since the 1970s, and in the 1980s, a Master Plan was implemented to address the growing needs resulting from development and population expansion.

[64] A row of retail stores located on Jalan Pretty, Kuala Belait; near Pandan 5, and in Seria town, offering a range of products from clothing and handicrafts to everyday essentials.

[65] The most well-liked local supermarket is Supa Save on Jalan Tengah; it offers a large selection of goods, including British and Australian brands as well as gluten-free, non-dairy, and organic foods.

The Pasarneka indoor market in Kuala Belait is open every day and offers fresh fish, flowers, and other items.

Among the well-known local retailers are Milimewah, Sentral Shopping Center, Soon Lee Mega Mart, Supa Save, and Ramdhani.

[66] The cuisine of Brunei is varied and includes Indian, Bangladeshi, Malay, Mexican, Thai, Japanese, and Chinese dishes.

In Kuala Belait and Seria, there are a few well-known western eateries as KFC, Burger King, and Pizza Hut.

BSP also founded the Seria Energy Lab in 2002 with the goal of educating the general population about science, technology, and the environment.

Opened in 1989, the Sungai Liang Forest Reserve has a tiny lake, a swimming pool, and a number of recreational amenities.

[68] Other noteworthy locations include one of Labi's highest peaks, Bukit Teraja, provides views of Mount Mulu and the Baram Valley.

Fresh vegetables and household necessities may be purchased from the daily food stalls run by Kuala Belait's Gerai Tudung Saji.