The Dan River (), formerly known as the Dan Shui (丹水) or 800 Li Black River (å «ç¾éÂÂé»Âæ±Â), is a river located in Shaanxi province in the People's Republic of China. The longest tributary of the Han River, the Dan rises at Heilongkou (é»Âé¾Âå£) in the Qin Mountains of Shaanxi province then flows south east through Shangluo City, Danfeng County, Shangnan County and Xichuan County, Henan province before joining the Han River at Danjiangkou, Hubei province.
There are three different theories as to how the Dan River got its name:
The Dan River Basin is located between 109ð30'-112ð00' East and 32ð30'-34ð10' North. Roughly wide, the river flows for through a basin covering .
According to the Yu Gong, the geography section of the Book of Documents, the Dan River joined the Han River at a place called Laohe Kou (èÂÂæ²³å£ literally: old river mouth).
Later on during and after the Tang dynasty (618–907 CE) under the Fan Zhen (è©éÂÂ) or "Buffer Town" system of administration, the Dan River area had the power to block transport on the Huai and Bian Rivers. As a result, the Dan became an important waterway in the Yangtze and Huai River region.
At the time of the Ming dynasty (1368–1644) and later, the Dan was used by merchants of the Guanlong Trading Bloc (å ³éÂÂéÂÂå¢) to transport goods to Xiangyang and Hankou, both in Hubei Province. At the same time many shipping (è¹帮ä¼Âé¦Â) and horse-drawn transportation (马帮ä¼Âé¦Â) guilds were established at Longju Village (é¾Â驹寨) (modern day Danfeng County, Shaanxi Province), illustrating the flourishing trade on the Dan River.
In 1693, during the reign of the Qing Kangxi Emperor, both Xi'an and Fengxiang County on the Guanzhong Plain suffered crop failure bringing famine to the region. Ding Sikong (ä¸ÂæÂÂÃ¥ÂÂ), governor general of the provinces of Hubei and Guangdong with the assistance of others, sent relief aid from Xiangyang via the Dan River into Shaanxi Province after carrying out dredging operations. Famine reoccurred later during Kangxi's reign in 1720 when 100,000 dan (ç³), equivalent to , of rice were shipped to Shaanxi from warehouses in Jingzhou, City, Hubei Province and other locations by boat along the Dan River to Longju Village. A decade later on 16 February 1731, the Yongzheng Emperor ordered grain to be dispatched from Hubei and Guangdong to Shangzhou, Shaanxi as a contingency against food shortages. In 1737, during the Qianlong Emperor's reign, crops failed in Shangzhou and grain prices rocketed. To keep down prices and provide disaster relief, the authorities in Liguanqiao Town (æÂÂå®Âæ¡¥éÂÂ) and Dengzhou City in Xichuan County, Henan procured 1880 dan, equivalent to , of foodstuffs which was shipped along the Dan River to Shangzhou. The Qing Guangxu Emperor's reign saw the 1890 occupation of Beijing by the Eight-Nation Alliance following the Boxer Rebellion. The emperor along with Empress Dowager Cixi escaped to Xi'an. Grain taxes from the Jingdai (èÂÂè¥Â) District (south of modern-day Neixiang County, Henan) were forwarded along the Dan River to Longju Village then on to Xi'an for use by the emperor along with his government and army.
With the advent of the Republic of China in 1912, a ballad spread amongst the people of Xichuan County featuring the words "The boatmen have three knives stuck in their stomachs: the river pirates, the bandits and the submerged reefs. They have only three choices: starvation, death by drowning or imprisonment." In turn, the boatmen themselves referred to the Dan as the "Black River", emphasizing the bandit problem. At that time, three relatively large families controlled shipping; those of Ling Laosi (Ã¥ÂÂèÂÂÃ¥ÂÂ) from Jingziguan Town (èÂÂç´«å ³éÂÂ)ï¼ÂGuo Laopo (éÂÂèÂÂå©Â) from Laocheng Town (èÂÂÃ¥ÂÂéÂÂ) and Liguanqiao Town's (æÂÂå®Âæ¡¥éÂÂ) Jin Yulou (éÂÂçÂÂ楼), head of the Red Guild (红帮ä¼Â). They were all considered leeches and exploiters by the boatmen. Records show that cargoes carried on the Dan River included kerosene, tobacco, chinaware, silk, medicinal ingredients, walnuts, peach kernels (used in Chinese medicine) and specialty products from the mountains.
During the 1940s onwards, waterborne trade on the Dan went into decline.
Three primary factors account for the decline in trade on the Dan River during the previous century. Firstly, wooden sailboats were a relatively backward technology. On the Shangluo section of the waterway a maximum of only four tons could be carried upriver and 10 tons downstream. With calm water, the round trip from Longju Village to Jingziguan took 20 days and involved heavy physical work with little return. However, in transportation terms, wooden sailboats were quite advanced for the time and there was no better option available. With the rapid growth of rail and road transportation from the early days of the Republic of China the sailboat's days were numbered.<br>The second factor concerns economic changes that occurred from the 1950s onwards. China's implementation of economic regionalization and a state monopoly on purchasing and marketing effectively severed the upstream/downstream trade links on the Dan River. A decade later the 1962 "Cut off the tail of capitalism" policy (岿ÂÂèµÂæÂ¬ä¸»ä¹Â尾巴) halted part-time shipping activities by the farming community.
Thirdly, with deforestation and the construction of reservoirs the water sources for the Dan River declined. Large quantities of silt in the river bed increased the number of dangerous reefs so that parts of the waterway became impassable.
The following are recorded amongst the many natural disasters that have occurred through history in the Dan River region: