Water / Soil / Ground Environment

State of Japan's Environment at a Glance: Japanese Lake Environment - Japanese Lakes

Japanese Lakes

Surface Area
(1995 Science Yearbook)
km2
Biwa Lake 670.5
Kasumigaura Lake 167.6
Saroma Lake 150.4
Inawashiro Lake 103.3
Nakanoumi Lake 86.8
Kussharo 79.4
Shinji Lake 79.2
Shikotsu Lake 78.4
Toya Lake 70.7
Hamana Lake 65.0
Caspian Sea
(The largest salt lake in the world,
Russia and three other countries)
371,000
Lake Superior
(The largest fresh water lake in the world,
Canada/USA)
82,367
Maximum Depth
(1995 Science Yearbook)
m
Tazawa Lake 423.4
Shikotsu Lake 360.1
Towada Lake 326.8
Ikeda Lake 233.0
Mashu Lake 211.4
Toya Lake 179.7
Chuzenji Lake 163.0
Kuttara Lake 148.0
Ozero Baykal (Russia)1,741
Lake Tanganyika
(Tanzania and three other countries)
1,470
Water Volume
Natural Lakes hundred
million m3
Reservoirs hundred
million m3
Biwa Lake 275.0 Okutadami Reservoir 6.0
Shikotsu Lake 209.0 Tagokura Reservoir 4.9
Toya Lake 81.9 Miboro Reservoir 3.7
Towada Lake 41.9 Kuzuryu Reservoir 3.5
Inawashiro Lake 38.6 Ikehara Reservoir 3.4
Kasumigaura Lake 8.0 Sakuma Reservoir 3.3
Shinji Lake 3.7 Sagami Reservoir 0.6
Ozero Baykal (Russia)230,000Owen Falls Reservoir (Uganda)2,040
Aswan High Dam Reservoir (Egypt/Sudan)1,690
Water Transparency
(Lake Environment in Japan, II)
m
Mashu Lake 28.0
Kuttara Lake 22.0
Aka-numa Lake 18.2
Shikotsu Lake 18.0
Panke Lake 14.0
Onuma-ike Lake 13.5
Suga-numa Lake 13.2
Usoriyama Lake 13.0
Penke Lake 11.3
Motosu Lake 11.2
Rokkannon-miike Lake 11.1
Ozero Baykal (Russia,1911)40.5
Lakes with a high level of transparency are often oligotrophic or acidotrophic lakes
formed by natural damming or volcanic activities.
Water Retention Time
Natural Lakes years Reservoirs years
Shikotsu Lake 51.2 Okutama Reservoir 0.68
Akan Lake 25.9 Kamafusa Reservoir 0.18
Towada Lake 8.5 Kojima Reservoir 0.07
Biwa Lake 5.5 Sagami Reservoir 0.05
Inawashiro Lake 3.8
Kasumigaura Lake 0.55
Shinji Lake 0.25
Tega-numa Lake 0.08
Lago Titicaca (Peru/Bolivia)1343
The average retention time for the world's lakes has been calculated as 1.2 years (retention time of reservoirs is generally shorter).

[Origin of Lake]
Origin of Lake Zoom in

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