geo.wikisort.org - Reservoir

Lake Sagami (相模湖, Sagami-ko) is an artificial lake located in Midori-ku, Sagamihara, Kanagawa in Japan's Kantō region. Created in 1947 after the Sagami River was dammed, it serves as use for recreational and hydroelectric purposes.[1][3] The lake also served as venue for canoeing events at the 1964 Summer Olympics held in Tokyo, located 60 kilometres (37 mi) from the lake.[3][4]

Lake Sagami
(2007)
Lake Sagami
Location	Kanagawa
Coordinates	35°36′50″N 139°11′0″E
Type	reservoir
Primary inflows	Sagami River[1]
Primary outflows	Sagami River
Catchment area	1.064 km2 (0.411 sq mi)[1]
Basin countries	Japan
Surface area	3 km2 (1.2 sq mi)
Average depth	19 m (62 ft)[2]
Max. depth	32 m (105 ft)[2]
Water volume	63,200,000 m3 (1.67×1010 US gal)[2]
Residence time	0.05 year[2]
Shore length1	34.4 km (21.4 mi)[2]
Surface elevation	167 m (548 ft)
Frozen	never
Settlements	Sagamihara[3]
References	[1][2][3]
1 Shore length is not a well-defined measure.

Water and land usage surrounding the lake

Typical lake flows (in m³/s) are 85 hydroelectric, 10.34 domestic, 4.16 irrigation, and 2.15 industrial.[2] Land usage is 87.5% natural, 4.6% agricultural, and 7.9% other.[2] Eutrophication issues have been a serious issue of the lake that was first observed in 1967.[1] The main issue was microcystis algae bloom and reached its highest cell count of 2,500,000 cells/mL in July–October 1979 (data from 1985).[1] Most vegetation grown around the lake are grassland and weeds while most crops grown are rice and vegetables.[1] Fertilizer application for crops near the lake is moderate.[1]

Recreational uses

Because of the lake's creation in 1947, it displaced the careers of many local fishermen in the area.[5] In return for their livelihood being taken away, many of these families were offered rental boats in the new lake.[5] No private boats are allowed on the lake as a result.[5] To compensate for the loss of the smelt, black bass from the United States was imported to the lake as was Prussian carp.[5] Because of the bass, the lake is a popular recreational fishing area.[5] The lake is also used for couples dating for boat rides and families. Row boat standard daily rental rates are ¥3000 for one person, ¥4500 for two people, and ¥6000 for three people.[5]

Water treatment

In 1984, there were 170 industrial and four municipal sewage treatment plants surrounding the lake.[1]

References

External links

Wikimedia Commons has media related to Lake Sagami.

На других языках

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[de] Sagami-ko

Der Sagami-ko (deutsch Sagamisee, japanisch 相模湖) ist ein Stausee im Midori-ku in der japanischen Stadt Sagamihara, Präfektur Kanagawa.

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- [en] Lake Sagami

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[fr] Lac Sagami

Le Lac Sagami (相模湖, Sagami-ko?) est un lac artificiel situé à Midori-ku, Sagamihara, préfecture de Kanagawa dans la région de Kantō au Japon. Créé en 1947 après qu'un barrage eut été construit sur le fleuve Sagami, c'est un site touristique et une unité de production d'énergie hydroélectrique. Le lac a aussi servi d'emplacement pour les compétitions de canoë-kayak aux Jeux olympiques d'été de 1964 tenus à Tokyo, situé à 60 km du lac.

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[it] Lago Sagami

Il lago Sagami (相模湖 Sagami-ko?) è un lago artificiale ubicato nel quartiere di Midori-ku a Sagamihara, nella prefettura di Kanagawa, nella regione giapponese di Kantō.[3] Creato nel 1947 dopo l'innalzamento della diga sul fiume Sagami, è utilizzato a fini ricreativi e idroelettrici.[2][3] Il lago servì anche come impianto per le gare di canottaggio alle Olimpiadi estive del 1964 tenutesi a Tokyo, localizzate a 60 km dal lago.[3][4]

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