Battambang in the context of "Inner Cambodia"

Cambodia, officially the Kingdom of Cambodia, is a country in Mainland Southeast Asia. It is bordered by Thailand to the northwest, Laos to the north, and Vietnam to the east, and has a coastline along the Gulf of Thailand in the southwest. It spans an area of 181,035 square kilometres (69,898 square miles), dominated by a low-lying plain and the confluence of the Mekong river and Tonlé Sap, Southeast Asia's largest lake. It is dominated by a tropical climate. Cambodia has a population of about 17 million people, the majority of which are ethnically Khmer. Its capital and most populous city is Phnom Penh, followed by Siem Reap and Battambang.

In 802 AD, Jayavarman II declared himself king, uniting the warring Khmer princes of Chenla under the name "Kambuja". This marked the beginning of the Khmer Empire. The Indianised kingdom facilitated the spread of first Hinduism and then Buddhism to Southeast Asia and undertook religious infrastructural projects throughout the region, the most famous of which is Angkor Wat. In the 15th century, it began a decline in power until, in 1863, Cambodia became a French protectorate. Following Japanese occupation during World War II, Cambodia declared independence from France in 1953. The Vietnam War embroiled the country in civil war during the 1960s, culminating in a 1970 coup which installed the US-aligned Khmer Republic and the takeover of the communist Khmer Rouge in 1975. The Khmer Rouge ruled the country and carried out the Cambodian genocide from 1975 until 1979, until they were ousted during the Cambodian–Vietnamese War. Peace was restored by the 1991 Paris Peace Accords and subsequent United Nations peacekeeping mission, establishing a new constitution, holding the 1993 general election, and ending long-term insurgencies. The 1997 coup d'état consolidated power under Prime Minister Hun Sen and the Cambodian People's Party (CPP).

Battambang (Khmer: បាត់ដំបង, Bătdâmbâng [ɓatɗɑmɓɑːŋ], lit. 'The Lost Stick') is a province of Cambodia in the far northwest of the country. Bordering provinces are Banteay Meanchey to the north, Pursat to the east and south, Siem Reap to the northeast, and Pailin to the west. The northern and southern extremes of the province's western boundaries form part of the international border with Thailand. In addition, Tonlé Sap forms part of the northeastern boundary between Siem Reap and Pursat. Its capital and largest city is Battambang.

It is the fifth most populous province in Cambodia. In land area, Battambang is the fifth largest province of Cambodia. Battambang is one of the provinces included in the Tonle Sap Biosphere Reserve. The province's fertile rice fields have led to a mostly agricultural economy giving rise to the moniker "the rice bowl of Cambodia". The province features a range of cultures as well as natural resources. Seventy five percent of the area is jungles and mountains. The area has a tropical climate.

The Sangkae River (Khmer: ស្ទឹងសង្កែ, Stung Sangkae; also spelled Stung Sangké or Stung Sangkhae) is one of the main rivers in Battambang Province in north western Cambodia. The Sangkae River is approximately 250 kilometres (160 mi) long. It flows through 6 districts and 27 communes in Battambang province before draining into the Tonlé Sap lake.

The average depth of the river, based on raw data provided by the Battambang's Department of Water Resource (2013) is during the dry season 2.35 metres (7.7 ft) and during the wet season 6.79 metres (22.3 ft).