Zenibako River
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The Zenibako River (銭函川) runs from
Otaru, Hokkaidō is a city and port in Shiribeshi Subprefecture, Hokkaido, Japan, northwest of Sapporo. The city faces Ishikari Bay and the Sea of Japan, and has long served as the main port of the bay. With its many historical buildings, Otaru is a popular tou ...
,
Hokkaidō is Japan's second largest island and comprises the largest and northernmost prefecture, making up its own region. The Tsugaru Strait separates Hokkaidō from Honshu; the two islands are connected by the undersea railway Seikan Tunnel. The la ...
,
Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
and ends in the
Sea of Japan The Sea of Japan is the marginal sea between the Japanese archipelago, Sakhalin, the Korean Peninsula, and the mainland of the Russian Far East. The Japanese archipelago separates the sea from the Pacific Ocean. Like the Mediterranean Sea, it h ...
. It is a Normal Class River of the Zenibako River System under Japanese River Law. The Zenibako River originates north of Mount Okuteine, near the border with
Sapporo ( ain, サッ・ポロ・ペッ, Satporopet, lit=Dry, Great River) is a city in Japan. It is the largest city north of Tokyo and the largest city on Hokkaido, the northernmost main island of the country. It ranks as the fifth most populous city ...
City. It runs through mountain woods and meets the Zenibako-tōge River (銭函峠川) as it emerges from the Zenibako Mountain Pass (銭函峠, Zenibako Tōge). Katsuraoka-machi (桂岡町, Katsuraoka Town) is situated around the left bank of its middle course. The river turns eastward where it passes under the
Sasson Expressway The is a 4-laned national Expressways of Japan, expressway in Hokkaidō, Japan. It is operated by the East Nippon Expressway Company. Naming The name Sasson is a kanji acronym of two characters. The first character represents and the second rep ...
and National Route 5. It runs through the urban area of Zenibako, turns north, then enters the
Ishikari Bay is a bay located in Hokkaido of Japan, connected to the Sea of Japan. Ishikari Bay is the area east of the straight line from Cape Shakotan on the west of Shakotan Peninsula to Cape Ofuyu. Geography Border communities ;Shiribeshi Subprefecture ...
200 meters southwest of
Zenibako Station is a railway station on the Hakodate Main Line in Otaru, Hokkaido, Japan, operated by Hokkaido Railway Company (JR Hokkaido). The station is numbered "S11". Lines Zenibako Station is served by the Hakodate Main Line. Station layout The stat ...
. The course lower than Route 5 was consolidated with concrete after the 1962 flood. Biochemical oxygen demand of the water in 2004 was 0.1 mg/L, which means good condition. Water of the upper stream is utilized by the Zenibako Purification Plant in Katsuraoka-machi for the east part of Otaru City's water service.
Water hardness Hard water is water that has high mineral content (in contrast with "soft water"). Hard water is formed when water percolates through deposits of limestone, chalk or gypsum, which are largely made up of calcium and magnesium carbonates, bicarbo ...
of Zenibako is 29 mg/L.北海道新聞「小樽の水はうまい! 中細分化 多数の水源と施設 作りたての味を家庭に」(''Hokkaido Simbun'' "Water of Otaru is delicious: Many small sources and plants serve flesh taste for home"), October 4, 2000. .


Bridges

* -
Sasson Expressway The is a 4-laned national Expressways of Japan, expressway in Hokkaidō, Japan. It is operated by the East Nippon Expressway Company. Naming The name Sasson is a kanji acronym of two characters. The first character represents and the second rep ...
*Zenibako Bridge (銭函橋) - Japan National Route 5 *Naka-no-hashi or Naka-no Bridge (仲の橋) *Sawa-no-hashi or Sawa-no Bridge (沢の橋) *Zenibako Shimo-no-hashi or Zenibako Shimo-no Bridge (銭函下の橋) * - Hakodate Main Line *Zenibako Bridge (銭函橋) - Hokkaidō Prefectural Highway 225, Otaru-Ishikari Line.


References

{{Rivers of Japan Rivers of Hokkaido Rivers of Japan