Prehistoric Han River Various Paleolithic and Neolithic artifacts have been discovered in the Han River basin, with
Amsa-dong Prehistoric Site in
Gangdong District representing the local area's
Neolithic culture. Artifacts such as pottery, stone tools, and spearheads, which provide insights into their dietary habits, have been unearthed. It is believed that these people engaged in intensive foraging activities in hills and low mountains, utilizing primitive fishing techniques like handline fishing or spear fishing from an early period, using tools such as spears or harpoons to catch fish. However, while handline and spear fishing were individual efforts with limited catch yields, net fishing enabled large-scale catches through collective labor in conjunction with foraging methods. Evidence of net fishing has been found at numerous archaeological sites. These communities accumulated surplus production through such collective activities, enhancing their adaptability to the environment and increasing their chances of survival. Consequently, their populations grew, settlements expanded, and stable, sedentary lifestyles emerged, leading to further cultural development. This progression laid the foundation for the emergence of ancient states in the Han River basin following the advanced cultures of the Bronze Age. and from the Three Kingdoms period onward, the zenith of each kingdom was determined by who controlled the middle and lower reaches of this river. Controlling the Han River was so crucial that it essentially defined a nation's golden age. Initially, Baekje held control, followed by Goguryeo, and later by Silla. As each kingdom rose to prominence, the other two would invariably form alliances to balance the power. This power dynamic continued throughout the entire Three Kingdoms period. The importance of the Han River stemmed from its numerous advantages: the agricultural productivity of its basin, the securing of transportation routes through river navigation, and the establishment of maritime trade routes with China. It was the only region that could simultaneously connect major rivers flowing through the Korean Peninsula—such as the Taedong River, Geum River, Yeongsan River, and Nakdong River—and the shipping routes of the southwestern sea.
Unified Silla Period After the unification of the Three Kingdoms, Silla designated the Hansanha (another name for the Han River) in the north as one of the nation's four great rivers, alongside the Hwangsanha (Nakdong River) leading to the South Sea, the Ungcheonha (Geum River) leading to the West Sea, and the Tojiha (Gokgangcheon in Heunghae-eup, Pohang) leading to the East Sea. These were collectively known as the "Four Waterways" (四瀆). The state held regular rituals (Jungsa, 中祀) for these rivers, underscoring their ideological importance.
Goryeo Dynasty In the 21st year of
King Munjong's reign, the importance of the Han River basin was recognized, and
Yangju (now Seoul) was promoted to Namgyeong (Southern Capital), making it one of the three major strategic locations alongside
Kaegyeong (New/Open capital) and
Seogyeong (Western Capital). Later, in September 1382 (8th year of King U), the capital was moved to
Hanyang(Another name for now Seoul). However, due to political and social unrest, along with the prevalence of
geomancy and the belief that the new capital was inauspicious, the capital was returned to
Gaeseong the following February. During the reign of the last Goryeo monarch,
Gongyang (1390), the capital was moved back again to
Hanyang in September 1390. However, after the establishment of Hanyang, significant storms, thunder, lightning, and disasters struck the nation, causing frequent misfortunes like people being swept away by the river, alongside bad omens such as tigers killing men. As a result, in February 1391, the capital was moved back to
Gaeseong, effectively ending the issue of relocating the capital (to Hanyang, or Seoul) within the Goryeo Dynasty. The eventual relocation of the capital to Hanyang (Seoul) was achieved in 1394 when
Yi Seong-gye founded the
Joseon Dynasty.
Joseon Dynasty After ascending to the throne,
Taejo Yi Seong-gye ordered the relocation of the capital to Hanyang on 3 August 1392, sixteen days after his coronation. This was done on 25 October 1394 (lunar calendar). After the capital relocation, the first time Seoul was the capital of any Korean nation since
Baekje's
Wiryeseong, the Han River grew in importance alongside the city's new prestiege. The Korean peninsula, being a very mountainous region, has traditionally relied heavily on canal- and river-based water transport for everything from inter-province trade to taxes, which at the time were mostly paid in commodities. The capital's position along the Han River meant that the allocation and transportation of grains and various commodities from various provinces to the capital was made much easier, allowing landlords residing in the capital to transport sharecropped grains from provincial (non-capital regions) farms to Hanyang via the river. Additionally, general goods within the capital were largely supplied by ships through the Han River. With the implementation of tax reforms and the introduction of the in the late Joseon period, the Han River's importance increased further, facilitating the transportation of rice collected from regions including
Honam and
Chungcheong Province by water. Thus, the Han River became a vital supply route for the state's grain reserves and national finances.
Modern History and his wife posing with
US Army Corps of Engineers personnel at the Han River Bridge in 1950 Within the first week of the start of the
Korean War, the
South Korean Army destroyed the Hangang Bridge in a bid to stem the advance of the invading
North Korean military. In early 1951, there was a
fair amount of fighting between
Chinese People's Volunteer Army troops and US-led United Nations forces in the Han River area surrounding Seoul. During the first few decades of South Korea's existence, the Han River became very polluted, as burgeoning industry and an impoverished populace used it as a convenient spillway for industrial and urban refuse. Though it no longer plays a central role in commerce or transportation, it is a prime fixture in the life of the South Korean capital. During the
1988 Summer Olympics in Seoul, the Han River was the site of the Olympic rowing regatta. It became the focus of government-sponsored environmental efforts to clean it up. There have been fears, such as the 1986 Water Panic in South Korea, that North Korea could attack Seoul by releasing waters from upstream dams, creating floods downstream. In July 2000, the US military admitted to dumping of diluted
formaldehyde in the sewer system connected to the river. As the river serves as a drinking source for some 12 million South Koreans, some South Koreans launched large protests and accused the US military of ignoring South Korea's environmental regulations. Activists lobbed toy rockets—filled with water from the river—into the main US Army base. The political party
Green Party Korea had earlier accused the US of dumping nearly 60 gallons of the toxic chemical into the river, and said that "... if people are exposed to the chemical for a long period of time, it could cause lung cancer [and when] dissolved into water, it could kill fish and other aquatic creatures." The events inspired
Bong Joon-Ho's acclaimed 2006 film
The Host. In 2012 the 18-kilometer
Ara Canal, suitable for large container and passenger vessels, was completed, linking the Han River near
Gimpo in Seoul to
Incheon. On 18 September 2025, the
Hangang Bus ferry service began to operate along a portion of the Han River in Seoul, serving seven ferry piers.
Joint Utilization Zone On 4 November 2018, a team of ten people from North Korea and ten from South Korea began a joint inter-Korean survey which will lead to the development a Joint Utilization Zone along the Han River's estuary. The zone will allow civilians to access the estuary for tourism, ecological protection and the collection of
construction aggregate under the protection of militaries from both sides of the Korean border. == Geography ==