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Lake Sai march evening 5-30pm from eastern end.jpg
from Eastern end
Location Yamanashi Prefecture
Coordinates 35°29′54″N 138°41′07″E / 35.49833°N 138.68528°E / 35.49833; 138.68528Coordinates: 35°29′54″N 138°41′07″E / 35.49833°N 138.68528°E / 35.49833; 138.68528
Primary inflows none
Basin countries Japan
Surface area 2.1 km²
Max. depth 71.7 m
Shore length1 9.85 km
Surface elevation 901 m
1 Shore length is not a well-defined measure.

Lake Saiko (西湖 Saiko?) is the one of the Fuji Five Lakes and located in southern Yamanashi Prefecture near Mount Fuji, Japan.

It is the fourth of the Fuji Five Lakes in terms of surface area, and second deepest, with a maximum water depth of 71.1 metres (233 ft).[1] Its surface elevation of 900 metres (3,000 ft) is the same as for Lake Motosu and Lake Shōji, confirming that these three lakes were originally a single lake, which was divided by an enormous lava flow from Mount Fuji during an eruption from 864-868 AD.[2] The remnants of the lava flow are now under the Aokigahara Jukai Forest, and there is evidence to indicate that these three lakes remain connected by underground waterways.[1]

The lake is within the borders of the Fuji-Hakone-Izu National Park.[3]

Saiko has no natural drainage, but an artificial channel now connects it to Lake Kawaguchi. As with the other Fuji Five Lakes, the area is a popular resort, with many lakeside hotels, windsurfing facilities, camp sites, and excursion boats. Japanese crucian carp, wakasagi and Kunimasu were introduced to the lake in the Meiji period, and sports fishing is also popular.

However, Kunimasu, which had been introduced to a number of lakes in Japan in the Taisho period were believed to have died out and become extinct, with the last reported sighting in 1935, until rediscovered in Lake Sai in 2010.[4]

West Lake in Hangzhou, China, is written with the same kanji as Lake Sai.

See also[edit]

Pictures of Lake Sai[edit]


  • Rafferty, John P. Plate Tectonics, Volcanoes, and Earthquakes. Rosen Publishing (2010), ISBN 1615301062


  1. ^ a b "Yamanashi Sightseeing Net". yamanashi-kankou.jp. Retrieved 2007-05-25. 
  2. ^ Rafferty, Tectonics, Volcanoes, and Earthquakes. page 135
  3. ^ Fuji-Hakone-Izu National Park(Ministry of the Environment (Japan))
  4. ^ 'Extinct' trout species rediscovered. Yomiuri Shimbun Dec. 16, 2010

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Saiko_Lake — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
3929 videos foundNext > 

Mt. Fuji from Saiko Lake [西湖より富士を望む/山梨県]

JAL旅プラスなび http://www.jal.co.jp/tabi/

Big Agnes Seedhouse SL2 Tent pitched at Saiko Lake, Japan

My first time to use my newly imported Big Agnes Seedhouse SL2 tent. Aya and I went backpacking in Yamanashi Prefecture, Japan and camped along the banks of ...

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Lake Saiko, Kawaguchi-ko inAug14

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Bōsōzoku in Saiko Lake, Mount Fuji (富士山巧遇暴走族)


Japan Travel log 5 HD1080P - Fuji Mountain, Kawaguchi Lake, Saiko Lake

Japan Travel log 5 HD1080 - Fuji Mountain, Kawaguchi Lake, Saiko Lake 日本游 山梨县 富士山,河口湖,西湖.

Lake saiko screen saver

Lake Saiko (西湖 Saiko?) is the one of the Fuji Five Lakes and located in southern Yamanashi Prefecture near Mount Fuji, Japan.

XC & CX Fun Ride at Lake Saiko

We enjoyed riding at Lake Saiko & the park. No action!

3929 videos foundNext > 

3 news items

Asahi Shimbun
Tue, 29 Jul 2014 09:01:38 -0700

“It is almost cold (in here),” said a participant of a recent tour of the lava cave known as "Saiko Komori Ana" (Saiko lake bat cave). “The cave is like a natural air conditioner,” said another. The temperature of the cavern remains around a constant 9 ...
Fri, 17 Dec 2010 07:14:20 -0800

There were actually nine mixed in with the catch of rainbow trout. About 100,000 kunimasu eggs were brought to Saiko Lake from Lake Tazawa before the hydroelectric project construction fouled the waters of Tazawa. Because the eggs were brought there 75 ...
The Japan Times
Tue, 17 Jan 2012 15:48:45 -0800

FUJIKAWAGUCHIKO, YAMANASHI PREF. – The Yamanashi Prefectural Government plans to raise an endangered deepwater salmon species discovered in 2010 in Lake Saiko at the foot of Mount Fuji — 70 years after it died out in its original habitat 500 km ...

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