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63-630: The Shinano River ( 信濃川 , Shinano-gawa ) , known as the Chikuma River ( 千曲川 , Chikuma-gawa ) in its upper reaches, is the longest and widest river in Japan and the third largest by basin area (behind the Tone River and Ishikari River ). It is located in northeastern Honshu , rising in the Japanese Alps and flowing generally northeast through Nagano and Niigata Prefectures before emptying into

126-439: A day and severe beatings for those who tried to escape. News articles at the time alleged that up to 100 Koreans were killed during construction and that local farmers had reported seeing bodies floating down river. This incident occurred following the annexation of Korea by Japan and was partially responsible for the development of trade unions for Korean workers in Japan. Two Japanese naval cruisers , one launched in 1911 and

189-458: A large range of animal life both in and around the river. However, the development of the river has threatened the continuing existence of a number of different species. Across the country, thirty to fifty (or higher) percent of endangered species are from freshwater river systems and the impact on the Shinano river system is also clear. Primarily this affects fish and amphibians due to their reliance on

252-740: A long history of hydroelectric power generation, with the first hydroelectric power plant in Japan being located in the system. During the construction of a plant on the Shinano River in the Niigata Prefecture in July 1922, it was reported by Tokyo's Yomiuri Shimbun on 29 July that Korean workers were being mistreated and murdered. The Shinano River incident involved 1,200 workers, approximately 600 of whom were Korean, who were subjected to regular mistreatment by their Japanese foremen . The mistreatment included malnutrition, forced labour up to sixteen hours

315-539: A marshy plain formed in the lagoon into what is currently the Echigo Plain . Estimates presented in 1993 place the amount of loose sediment in the river system at 400–500 cubic metres per kilometre (840–1,050 cu yd/mi). The construction of diversion channels have limited the upkeep required to keep a navigable passage between the Niigata port and the open ocean; however, a consequence of diverting sediment has been that

378-677: Is 180 kilometres (110 mi) from the Fukushima Daiichi Plant. Six fishery cooperatives and 10 towns along the river were asked to stop all shipments of fish caught in the Tone. The Tone River was an indispensable inland water link between the capitol at Edo , and later Tokyo, to the Pacific Ocean. It carried not only local products like soy sauce from Choshi , but also products from the Tōhoku region , in order to save time and to avoid risk in

441-456: Is a major industry in the Shinano River basin as there are a number of attractions in the area. The Shinano River system attracts a number of tourists from across the country for angling and to experience Tsukeba fish shacks which are set up along the river bank and bed to cook fish as they are caught. The hot springs along the Chikuma River for example from tourists into the upper reaches of

504-683: Is also responsible for making tourism a large part of the regional economy. Every year, around 6.5–7 million people visit the Zenkō-ji Buddhist template in Nagano. It is believed that visiting the template will grant salvation. This has resulted in the head temple of the Tendai sect being a significant attraction for tourists throughout its 1,400-year history. 37°23′17″N 138°48′39″E  /  37.38806°N 138.81083°E  / 37.38806; 138.81083 Tone River The source of

567-505: Is over 230km but the final 10km or so into Choshi is on a road. The remaining 220km is on detached cycling paths high up on the river bank with great views of mountains while in Gunma and large rice fields and agriculture as you approach the ocean. [REDACTED] Media related to Tone River at Wikimedia Commons Japan%E2%80%93Korea Treaty of 1910 Taishō period Shōwa period The Japan–Korea Treaty of 1910 , also known as

630-773: Is primarily due to its encirclement by the three ranges which make up the Japanese Alps and by the Jōshin'etsu-kōgen National Park . However, the upper reaches of the Chikuma and Sai Rivers and the lower part of the Chikuma River (where it changes name to the Shinano River) receive 1,200–2,300 millimetres (47–91 in) annually. In the central areas of the Shinano River, especially in the Uono Basin, precipitation increases to around 2,200–3,000 millimetres (87–118 in); this area receives some of

693-504: Is the author of Japan's Colonization of Korea: Discourse and Power in which she discusses how Japanese policymakers carefully studied and then invoked international law to annex Korea legally. According to Kan Kimura , a major result of this conference is that the Korean claim that the annexation was illegal was rejected by the participating Western scholars, as well as others specializing in international law. On 28 August 2007, regarding

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756-511: Is the second highest in Japan after the Yodo River . The Ministry of Land, Infrastructure, Transport and Tourism has designated the Shinano River system as Class A. The discharge of the river averages 503 cubic metres (17,800 cu ft), with a mean maximum of 3,776 cubic metres (133,300 cu ft) to mean minimum of 91 cubic metres (3,200 cu ft). In addition to this discharge, 30.4 cubic metres (1,070 cu ft) of water

819-635: Is thus largely artificial. Two ships of the Imperial Japanese Navy were named after the river, one of World War I vintage and another from World War II , the lead ship of its class . As a result of the Fukushima Daiichi nuclear disaster radioactive cesium concentrations of 110 becquerels per kilogram were found in silver crucian carp fish caught in the Tone River in April 2012. The river

882-491: Is used for municipal and industrial supply across the basin. The Chikuma River originates in the Japanese Alps at altitudes of above 2,000 metres (6,600 ft) and has a basin in its own right of 7,163 square kilometres (2,766 sq mi). The Chikuma continues generally north-northeast joining with the Sai and changing name to the Shinano, after 214 kilometres (133 mi). The Chikuma, therefore, includes around sixty percent of

945-534: The Agatsuma , Watarase , Kinu , Omoi , and the Kokai River   [ Wikidata ] . The Edo River branches away from the river and flows into Tokyo Bay . The Tone River was once known for its uncontrollable nature, and its route changed whenever floods occurred. It is hard to trace its ancient route, but it originally flowed into Tokyo Bay along the route of the present-day Edo River , and tributaries like

1008-556: The Asian Yearbook of International Law , in his book on international law, "Carty prefers seeing the relationship between Japan and Korea at the time with reference to the reality of the then international community dominated by Western powers, rather than viewing it in terms of treaty law as argued by Korean scholars". Alexis Dudden, a professor at the University of Connecticut , discussed Nitobe Inazō 's science of colonial policy. She

1071-755: The Emperor of Japan of all rights of sovereignty over the whole of Korea". Gojong of the Korean Empire later called the treaty a neugyak ( 늑약 勒約 , Forced treaty). This alternative term used in lieu of joyak ( 조약 條約 , Treaty) implies the Koreans were coerced into accepting the treaty by the Japanese. Terms such as Gyeongsul Gukchi ( 경술국치 庚戌國恥 , National humiliation of the year of Gyeongsul) and Gukchi-il ( 국치일 國恥日 , National humiliation day) are also used in Korea to refer to

1134-695: The Japan–Korea Annexation Treaty , was made by representatives of the Empire of Japan and the Korean Empire on 22 August 1910. In this treaty, Japan formally annexed Korea following the Japan–Korea Treaty of 1905 (by which Korea became a protectorate of Japan) and the Japan–Korea Treaty of 1907 (by which Korea was deprived of the administration of internal affairs). Japanese commentators predicted that Koreans would easily assimilate into

1197-595: The Keiyō Industrial Zone . The Minakami onsen area in Gunma Prefecture is near the source for the Tone River and during the spring snow melt period, April–June, the river provides consistent grade 4 rapids (on the International Scale of River Difficulty ) over a 12 kilometers (7.5 mi) stretch. The river provides some of the best white water rafting and kayaking in Japan. The snow melt swells

1260-589: The Korea Foundation . Scholars of history and international law participated from South Korea, North Korea , Japan, the United States, the United Kingdom, Germany, and Canada. Anthony Carty, a professor at the University of Derby , stated, "During the height of the imperialism, it is difficult to find an international law sufficient to determine the legality/illegality of a particular treaty." According to

1323-451: The Kyōhō era. Government support was not secured until the early twentieth century following severe flooding and inundation in 1896. Construction work on the 10-kilometre-long (6.2 mi) Ōkōzu Channel ( 大河津分水路 , Ōkōzu Bunsuiro ) began in 1909 and concluded in 1922. The success of the channel was short-lived, however, as the floodgate collapsed in 1927 due to erosion of the channel bed and

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1386-595: The Sea of Japan . It is designated as a Class A river. The Shinano River has a long history in Honshu, and along with other rivers in the region, has a significant effect on the geography and ecology of the area. Originally, the Shinano River would have drained straight into an estuary-like Fukushima lagoon before making its way into the Sea of Japan after flowing down from the Japanese Alps. Over centuries of sediments being brought downstream,

1449-673: The Watarase and Kinu had independent river systems. For the sake of water transportation and flood control, extensive construction began in the 17th century during the Tokugawa shogunate , when the Kantō region became the political center of Japan. The course of the river was significantly changed, and the present route of the river was determined during the Meiji period , with the assistance of Dutch civil engineer Anthonie Rouwenhorst Mulder . Its vast watershed

1512-579: The environmental degradation of key fish habitat. Changes in the system have affected its ability to support and maintain fish species which are endemic to the river. Some actions have been taken to overcome these issues, including prohibitions on fishing salmon during breeding and stocking certain areas for fishing, especially in areas where Tsukeba fish shacks (popup stores along the riverbank) are regularly set up. The river system has also long been home to bird life. The negative effects of human development have not as significantly affected birds as fish due to

1575-531: The second in 1938 , were named after the Chikuma River. A 1940s aircraft carrier was named after the old Shinano Province. The Chikuma River rises in the northeastern foothills of Mount Kobushi in the Japanese Alps on the border of Saitama , Yamanashi and Nagano Prefectures, partially in the Chichibu Tama Kai National Park It joins with the Yochi River and flows roughly north to join

1638-501: The Empire of Japan and the Empire of Korea on or before August 22, 1910, are already null and void." In January, April, and November 2001, an academic conference on the legality of Japan's annexation of Korea from 1910 to 1945 (titled A reconsideration of Japanese Annexation of Korea from the Historical and International Law Perspectives ) was held at Harvard University with the support of

1701-605: The General Power of Attorney by Sunjong, Korean newspaper Dong-a Ilbo reported that Korean monarchs did not sign in the official documents with their real names, traditionally, but the Korean Emperor was forced by Japan to follow a new custom to sign with his real name, which originated from the Western Hemisphere. It mentioned Sunjong's signature may be compulsory. On 23 June 2010, 75 South Korean congressmen suggested

1764-587: The Japanese Empire. In 1965, the Treaty of Basic Relations between South Korea and Japan confirmed this treaty is "already null and void". The treaty was proclaimed to the public (and became effective) on 29 August 1910, officially starting the period of Japanese rule in Korea. The treaty had eight articles, the first being: "His Majesty the Emperor of Korea makes the complete and permanent cession to His Majesty

1827-410: The Japanese imperial armed forces' plan, he went directly to the Empire of Japan and negotiated a "merger" against the Japanese imperial Prime Minister Katsura Tarō and other members of the Japanese imperial Choya. If Song Byeong-jun 's cabinet is established, not only is there a risk of retaliation, but also Ye Wanyong , fearing that the main role of the annexation will be taken away, said, "Even if

1890-487: The Niigata Prefecture at Sanjō . After entering the Echigo Plains the river becomes deltaic and swampy due to its very small gradient (an average of 1 in 4000). The Ōkōzu Channel ( 大河津分水路 , Ōkōzu Bunsuiro ) , completed in the 1920s, diverts flood water northwest into the Sea of Japan while the river splits into a number of branches and continuing northeast. Approximately 25 kilometres (16 mi) south of its mouth,

1953-513: The Niigata port. The channel is crossed by the Echigo Line and the National Route 402 (excavated materials from the channel were used in the construction of Route 402). There are a number of major dams in the Shinano River system, but not on the main river itself, rather its tributaries are extensively dammed and used for electricity generation as well as water for irrigation. The major dams in

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2016-509: The Ohkouz Channel and weir. The abundance of water and fertile soils has led to this area being the one of the best rice producing areas in Japan. Rainfall varies considerably in the Shinano basin. In the middle part of the Chikuma River, near its confluence with the Sai River, rainfall is some of the lowest in Japan, generally staying below 1,000 millimetres (39 in). The low precipitation

2079-473: The Sea of Japan. The river is crossed multiple times as it meanders its way through Niigata, including by the Bandai Bridge which was, when it was originally built in 1886, the longest bridge in Japan at 782 metres (2,566 ft). The current Bandai Bridge, built in 1929 and designated as a nationally important cultural property , is only 306.9 metres (1,007 ft) long. This is also in stark contrast with

2142-451: The Shinano River. The Shinano continues northeast to a confluence with Uono River between Ojiya and Uonuma ( 37°16′30″N 138°51′00″E  /  37.275°N 138.85°E  / 37.275; 138.85  ( Uono River ) ). After its confluence with Uono River, the Shinano is crossed by Koshiji Bridge and the Shinetsu train line before emerging onto Echigo Plains of

2205-578: The Tone River is at Mount Ōminakami   [ Wikidata ] ( 大水上山 ) (1,831 meters (6,007 ft)) in the Echigo Mountains , which straddle the border between Gunma and Niigata Prefectures in Jōshin'etsu Kōgen National Park . The Tone gathers tributaries and pours into the Pacific Ocean at Cape Inubō , Choshi in Chiba Prefecture . Major tributaries of the Tone River include

2268-639: The Yu River ( 36°16′N 138°25′E  /  36.26°N 138.42°E  / 36.26; 138.42  ( Yu River ) ) then turns northwest into an intermontane basin at Nagano City where it is joined by the Sai River from Matsumoto and the Hoshina River ( 36°37′30″N 138°15′00″E  /  36.625°N 138.25°E  / 36.625; 138.25  ( Sai River ) ). The Chikuma then changes direction and flows northeast from Nagano into Niigata Prefecture where it changes its name to

2331-471: The current cabinet collapses, a more pro-Japanese cabinet cannot come out." and voluntarily informed the Ministry of Knowledge Economy that it was possible. In directing such a scenario, the Empire of Japan gradually decided that the period of “Annexation” was ripening, and promoted Shigemaru to make a “joining petition” using Lee Yong-gu and Song Byeong-jun . The legality of the treaty was later disputed by

2394-532: The earliest examples of Flame-style pottery (kaen doki), dating from the Middle Jōmon period (3500–2500 BCE ), found at Sanka excavation site in Nagaoka, Niigata , near the confluence of the Sai and Shinano Rivers. As with rivers across the world, the Shinano provided a valuable means of transport. The system also provided a method of transport for goods to be moved downstream to one of three ports, Nutaru, Niigata and

2457-570: The exiled Provisional Government of the Republic of Korea , as well as the South Korean government . While the treaty was affixed with the national seal of the Korean Empire, Emperor Sunjong of Korea refused to sign the treaty as required under Korean law. The treaty was instead signed by Prime Minister Ye Wanyong of the Korean Empire, and Resident General Count Terauchi Masatake of the Empire of Japan. This issue caused considerable difficulty in

2520-476: The highest winter snow falls in Japan with 40–50% of this precipitation falling as snow. The heavy snow melt is responsible for much of flooding to affect the Echigo, but also allows for the hydroelectricity generation and regular irrigation. The Shinano basin supports a large range of plant life, including over 1,100 species of plant which grow on the river bank, in the river bed or more broadly. The basin also supports

2583-598: The legal nullification of the Japan–Korea Annexation Treaty to the Prime Minister Naoto Kan . On 6 July 2010, Korean and Japanese progressive Christian groups gathered in Tokyo's Korean YMCA chapter and jointly declared that the Japan–Korea Annexation Treaty was unjustified. On 28 July 2010, around 1000 intellectuals in Korea and Japan issued a joint statement that the Japan–Korea Annexation Treaty

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2646-420: The mid and upper reaches of the system have significantly affected the ability of fish to migrate up and down the river, and into the Sea of Japan. There has also been a significant increase in the amount of fishing which takes place in the system which is associated with the introduction of invasive fish species and waterbirds into the system. The development of the river, and human settlement, has also resulted in

2709-424: The more limited changes to bird habitat (which includes the forests which still remain on surrounding mountains). There are more than 130 species of birds which frequent the river system, these include starlings and ducks as well as migratory birds such as cranes and ibis. The Shinano River system, particularly in its upper reaches (Chikuma River) and in the Sai basin, is used for hydroelectric power generation due to

2772-466: The negotiations for the establishment of basic diplomatic relations between Japan and South Korea in 1965. The South Korean government held the position that the annexation treaty was null and void at the time of signing, which the Japanese government contested. A compromise was reached in Article II of the 1965 Treaty on Basic Relations : "It is confirmed that all treaties or agreements concluded between

2835-551: The northern coast of Niigata Prefecture (which includes Niigata and its port) is receding by an average 9 cubic metres per metre (97 cu ft/ft) per year (measured from 1947 to 1975) due to sediment being released well-south of the river's original mouth in Niigata. The Shinano River Project, funded by the British Academy , investigates the development of the Shinano—Chikuma River system. It has uncovered some of

2898-405: The open sea. With the advent of the railway in the 19th century major shipping on the Tone quickly declined, and inland ports such as Noda , Sekiyado , now part of Noda, Nagareyama , and Sawara , now part of Katori diminished in importance. Today the river has several dams that supply water for more than 30 million inhabitants of metropolitan Tokyo and large-scale industrial areas such as

2961-491: The original wall. Construction was planned to limit negative affects on scenery and wildlife. To this end, natural stones were used for the exterior and fishways were included in the design. Flooding in the Niigata area continued following the construction of the Ōkōzu Channel. As a result, another channel, which was originally planned in the Edo period (1700s–1800s), was built on the western outskirts of Niigata City to further mitigate

3024-514: The provincial port of Kambara. Little evidence remains which details the importance or role of these ports; however, large amounts of Medieval Chinese artefacts have been found in the region, and the Muromachi period play, Miuri , was set in Kambara, indicating its regional significance. There is limited evidence which has caused some historians (such as Shishi Tokamachi) to suggest that the Shinano system

3087-651: The risk of flooding and to help prevent saltwater intrusion into the Shinano estuary. The Sekiya Diversion Channel was originally to be funded by the Niigata Prefecture; however the 1964 Niigata earthquake resulted in the funds no longer being available so it was adopted as a national project. Construction of the Sekiya Diversion Channel commenced in 1968 and concluded in 1973 with a channel 1.8 kilometres (1.1 mi) long and 240–280 metres (790–920 ft) wide. The channel provides another alternate path for sediment to be directed straight out to sea and away from

3150-762: The river played a vital role in local trade. The Chikuma valley also provided a link across the island of Honshu. The confluence of the Chikuma and Sai rivers, called the Kawanakajima Plain, was the location a series of battles in the sixteenth century as part of the Sengoku period . The most significant of the battles was fought on 18 October 1561 between the Takeda clan and Uesugi clan , and resulted in severe casualties to both sides. The battles have become well known in Japanese military history, mentioned in literature, woodblock printing and movies. The Shinano River system has

3213-675: The river system. The Shin-Takasegawa Pumped Storage Station is a significant power plant located on the Takase River near Ōmachi , it boasts the second tallest dam (and the tallest rock-filled embankment) in Japan, and an output of 1280 megawatts. Additionally, Japan's oldest hydroelectric power plant is located in the Shinano River system. The Miyashiro Power Plant No. 1 was opened by the Azumi Electric Power Company in 1904 and has, since then, been in continual operation, currently operated by Chubu Electric Power Company . Tourism

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3276-415: The river to grade 4 in spring; in the summer it is a gentle grade 2. The Momijikyo section has 7 grade 3-4 rapids for 1 kilometer (0.62 mi) and is 12 kilometers (7.5 mi) long in total. The Tone River is home to Japan's longest car free cycling path. At over 220km long the Tone River Cycling Road 利根川サイクリングロード starts in Shibukawa City, Gunma and runs all the way to Choshi City, Chiba. The total route

3339-441: The river turns north and flows towards Niigata. The Sekiya Diversion Channel was completed in the 1960s in response to flooding in Niigata continuing after construction of the Ōkōzu Channel. It is designed to mitigate flooding by diverting flood waters away from the city and straight into the Sea of Japan. The river turns northeast and flows through Niigata City for approximately 6 kilometres (3.7 mi) before finally emptying into

3402-415: The river's 720-metre (2,360 ft) width at the Ohkouzu Diversion Channel. Due to seasonal high rainfall in the Shinano's watershed the fertile farmlands on the Niigata plain were subjected to flooding every three to four years which destroyed crops, particularly rice, and villages. Attempts from local residents to secure funding to build a diversion channel began in the mid-early eighteenth century, during

3465-466: The river. The construction of weirs and dams to support agriculture and industry as well as the introduction of invasive species and pollution have been the main causes of ecosystem degradation. The Shinano basin provides a habitat for around twenty-five percent of Japan's fish species (around fifty-five of the 200 fish species living in Japan) including both endemic freshwater fish as well as diadromous fish . The construction of large dams, especially in

3528-403: The river. The high rate of snow in the mountains surrounding both the Chikuma and Shinano Rivers make them attractive places for snow sports with a number of ski resorts scattered throughout the mountains. The 1998 Winter Olympics , which were held in Nagano, indicate the large number of locations for snow sports in the area. In addition to these natural attractions, human involvement in the area

3591-475: The steep gradient in its upper reaches and its high discharge producing, as a whole, 2,618 megawatts. While the construction of hydroelectric power stations began before World War II, it significantly increased following the war. These power plants, such as the Shimofanato Power Station and the 450,000 kilowatt JR East Shinano River Hydropower Station near Ojiya, supply Tokyo. There are several hydroelectric power plants operated by Tokyo Electric Power Company in

3654-404: The system are listed below: The 11,900 square kilometres (4,600 sq mi) basin of the Shinano-Chikuma River system is the third largest in Japan and at 367 kilometres (228 mi), is the longest river in the country. The river system supports a population of around 3 million (as of 2009) and supports significant agriculture and electricity generation. The river has 880 branches which

3717-448: The whole river system's basin and around 58 percent of the river's length. In the upper reaches of the river, where it is known as the Chikuma, only around ten percent of the land is flat, agricultural land and around 49,600 hectares (123,000 acres) of it is irrigated. By the time the river flows onto the Echigo Plain, however, much more land is devoted to agriculture and there is huge potential for irrigation, especially due to influence of

3780-446: The year and date of the treaty's proclamation. The United Kingdom had already acquiesced to the annexation of Korea by Japan, via the British connection to Imperial Japan via the Anglo-Japanese Alliance of 1902 and 1905; and the United States had also sanctioned the annexation, as per the Taft-Katsura Agreement . The Empire of Japan had already confirmed the policy of Annexation at the Cabinet Meeting on 6 July 1909. However, it

3843-411: Was left only to minimize side effects and obtain an international justification. The Japanese imperial government was preparing a scenario for a "merger petition" to Shigemaru Sugiyama, an advisor of the Iljinhoe . Prior to this, Song Byeong-jun went to the Empire of Japan in February 1909 and held a bargaining for the country. Many times, Itō Hirobumi urged a "merger", but when work was delayed due to

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3906-442: Was not fully repaired until 1931. The construction of the diversion channel has resulted in marsh fields drying on the Niigata plain which allows for greater production. Likewise, drier land has also allowed for the construction of infrastructure such as expressways and the Shinkansen express-train network, to support a greater population in the area. A new weir wall was constructed between 1992 and 2000 due to safety concerns with

3969-409: Was not widely used for boat travel until the eighteenth century. Brian Goldsmith, however, contends that the Shinano was, in fact, used for waterborne trade based on archaeological finds, including coin hoards and imported pottery, found in the headwaters of the Shinano. One of the main inland roads in Honshu followed the Shinano valley inland to the Japanese Alps. The location of the road indicates that

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