Aquaduct Tunnels in Japan > 2 000 m
Edited by: Jiro Ogino
Tunnel Length Inner
section		 Method Comment
Year of opening
Naka Water Conveyance:
Ishioka Tunnel
Tsjuchiura Tunnel
Mito tunnel
24 500 m
11 600 m
6 800 m
15.9 m2
15.9 m2
15.9 m2
Shield
Shield
Bore		 Total 42 900 m
Under construction
Under construction
Break through
North-Neya Underground River 11 000 m 23 - 82 m2 Shield Under construction
Metropolitan Area Outer Discharge Channel 6 300 m 79 m2 Shield Under construction
Katababira River Diversion 5 320 m 83 m2 Bore 1997
Hirano River Underground Regulation Pond 4 800 m 75 m2 Shield Under construction
Kusaka River Diversion 4 746 m 40 m2 Bore
cut/cover		 1982
Kanda River Underground Regulation Pond 2 000 m 123 m2 Shield Total 4 500 m
Under construction
Nippa-Suehiro Main Sewerage 4 435 m 50 / 57 m2 Shield Under construction
Outsu River Diversion 4 053 m 11.3 - 102 m2 Shield Under construction
Chikusadai River 3 293 m 13.3 m2 Shield 1975
Tone Water Conveyance 2 600 m 12.6 m2 Shield Break through
Kokubu River Diversion 2 555 m 42 m2 Bore 1994
Misaka River Diversion 2 517 m 38 m2 Bore 1984
Kataokagawa River Diversion 2 063 m 122 m2 Bore 1980
Gotanda River Diversion 2 000 m 59 m2 Shield Break through
Imai River Underground Regulation Pond 2 000 m 102 m2 Shield Break through

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This page was last modified on December 16, 2002