水道水源と水系別給水区域概要図 Outline of Water Resources and Service Areas by River Systems

東京都水道局の概要

Crest height 131m Eective storage capacity 175.8 million m3 Water utilization capacity 115.5 million m3 Crest height 158m Eective storage capacity 85.00 million m3 Water utilization capacity 85.00 million m3

Fujiwara Dam Crest height 95m Outline of the Tokyo Waterworks Bureau Aimata Dam Eective storage capacity 35.89 million m3 Water utilization capacity 31.01 million m3

Crest height 67m Eective storage capacity 20.0 million m3 Sonohara Dam Crest height 140m Water utilization capacity 20.0 million m3 Eective storage capacity 50.50 million m3 Nakagawa River 3 Yanba Dam Akayagawa River Water utilization capacity 50.50 million m Kasumigaura Crest height 77m Water Conveyance Eective storage capacity 14.14 million m3 Katashinagawa River Water utilization capacity 13.22 million m3 Eective storage capacity 90.0 million m3 Agatsumagawa River Water utilization capacity 90.0 million m3 Construction period From 1976 to 2015 Construction period From 1967 to 2019 Watarasegawa River S51～H27 Tone Large Weir Kasumigaura kaihatsu Lake Kasumigaura

Shimokubo Dam Eective storage capacity 617.0 million m3 Crest height 129m Tonegawa River Water utilization capacity 278.0 million m3 Eective storage capacity 120.0 million m3 Watarase Reservoir Water utilization capacity120.0 million m3 Kannagawa River Sekiyado Lock Gate Takizawa Dam Nakatsugawa River Musashi Channel Eective storage capacity 26.4 million m3 Water utilization capacity 26.4 million m3 Hitachigawa Floodgate Crest height 132 m Eective storage capacity 58.0 million m3 Urayama Dam Water utilization capacity 58.0 million m3 Arakawa River Edogawa River Tonegawa River Crest height 156m Saitama Goguchi Stage Ⅱ Estuary Weir Eective storage capacity 56.0 million m3 Water utilization capacity 56.0 million m3 Akigase Intake Weir Tone Chuo Nakagawa Ogouchi Dam Yamaguchi Reservoir Arakawa Reservoir River Kita-chiba Water Conveyance Channel Futase Dam Asaka Channel Misato Crest height 149m Okutama town 3 Eective storage capacity 185.4 million m3 Eective storage capacity 34.35 million m 3 Eective storage capacity 10.6 million m3 Water utilization capacity 185.4 million m3 Water utilization capacity 34.35 million m Crest height 95m Water utilization capacity 10.2 million m3 Nakagawa River/Edogawa River Eective storage capacity 21.8 million m3 Oume city Connection Water Conveyance Channel Water utilization capacity 20.0 million m3 Ozaku Intake Weir Asaka Murayama Reservoir Misono Adachi ward Tamagawa River Kiyose city Ozaku Kanamachi Water conservation forests Hamura Intake Weir Mizuho town Higashi-murayama Kita ward Higashi- Itabashi ward Katsushika murayama city ward 22,667ha Hamura city Higashi- Nerima ward Musashi- kurume city Arakawa ward Hinode town murayama city Higashi- yamato city Nishi- Toshima ward Fussa city tokyo city Nakano Bunkyo Taito ward Edogawa Kodaira city ward ward Sumida ward Tachikawa ward Akiruno city city Musashino Shinjuku ward Gyotoku Movable Weir Hinohara village city Suginami ぜき Kokubunji city Koganei Chiyoda Akishima city city Sakai ward Koto ward Kunitachi Mitaka city Suginami ward Shibuya city Chuo ward ward Fuchu city Minato Chofu city Setagaya ward ward Hino city Hachioji city Kinuta Meguro Edogawa River Kinutashimo Komae ward Lock Gate Tama city Inagi city city Nagasawa Shinagawa ward

Sagami Dam Chofu Intake Weir Tonegawa River せき Tamagawa (halted) Machida city Ota ward Tamagawa River

Tamagawa River Siroyama Dam Mixed river system of the Tonegawa and Tamagawa Rivers

Mixed river system of the Tonegawa,Tamagawa,Sagamigawa Rivers Intake Weir 利根川・多摩川・相模川の混合系 せき Sagamigawa River Purification plant Dam (completed) Water conveyance channel (completed) Dam (under construction) Water conveyance channel Agricultural water rationalization program (under construction)

Note: Each Service area changes due to the effect of the water shortage or the other reasons. 注 それぞれの給水する区域は、渇水等の影響により変動します。

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