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Introduction of facilities > Imagiregawa Estuary Barrage

Imagiregawa Estuary Barrage

Imagiregawa Estuary Barrage

The Imagiregawa Estuary Barrage is built between Tainohama, Kitajima Town (on the left bank) and Enokize, Kawauchi-cho (on the right bank). The surrounding areas are remarkably urbanized with factories, houses and large suburban shopping centers. This estuary barrage consists of one lock gate to let ships through, six water control gates, one regulating gate and two fishways on the right and left sides. The Kyu-Yoshinogawa Estuary Barrages Management Office is just next to this barrage, located in Kawauchi Town.

Location Right bank Enokize, Kawauchi-cho, Tokushima-shi, Tokushima
Left bank Tainohama, Kitajima Town, Itano-gun, Tokushima
Estimated high-water level T.P. + 3.277 m
Estimated high-water discharge 1,100 m3/sec.
Barrage length 220.3 m (movable part: 206.3 and fixed part: 14.0)
Barrage height T.P. + 1.767 m
Foundation height T.P. - 4.233 m
Water gate length 193.3 m
Water gate Gate Flood control gate
1 over flow shell type double leaf wheel gate
25.0 m in span x 6.0 m in height
Regulating gate:
6 steel shell type wheel gates
25.0 m in span x 6.0 m in height
Lock gate Effective
width x length
7.3 m x 36.0 m
Gate 2 wheel gates
7.3m in span x 6.0m in height
Fishway Gate 2 flap gates
5.5 m in span x 1.812 m in upright height
Incorporated Administrative Agency Japan Water Agency
Incorporated Administrative Agency Japan Water Agency
Kyu-Yoshinogawa Estuary Barrages Management Office

841 Enokize, Kawauchi-cho, Tokushima-shi, Tokushima 771-0144 Tel: 088-665-1435 Fax: 088-665-1374
E-mail: kyuyoshi@mbs.sphere.ne.jp