General View of Nagaragawa Estuary Barrage Facilities
[Site]
The left bank : Tokadomo, Nagashima-cho, Kuwana City, Mie Prefecture
The right bank : Fukushima, Kuwana City, Mie Prefecture
Fiscal | 1960 | Preliminary survey started. |
Fiscal | 1963 | Survey by KST (the Estuary Resource Survey Team for the Three Kiso Rivers) (A67) |
Fiscal | 1968 | Review of project implementation plan started. |
Oct. | 1968 | Basic plan decided. |
Fiscal | 1971 | Construction began. |
Dec. | 1971 | Policy on implementation announced. |
Mar. | 1973 | Basic plan (partial amendment) |
July. | 1973 | Implementation plan approved. |
Dec. | 1973 | Action demanding suspension of construction filed (old suit). |
Sept. | 1976 | Bank collapse at Anpachi-machi, Gifu Pref. |
May | 1981 | Action demanding suspension of construction abandoned (old suit). |
Apr. | 1982 | Action demanding suspension of construction filed (new suit). |
Feb. | 1988 | All fishermen's cooperative associations agreed on the start of work. |
Mar. | 1988 | Construction of the main structure of barrage began. |
Dec. | 1988 | Change of policy toward implementation indicated. |
Feb. | 1989 | Change of policy toward implementation approved. |
Mar. | 1992 | Additional survey report published. |
Apr. | 1992 | Technical report published. |
Mar. | 1993 | Basic plan (total change) |
Apr. | 1994 | Nagaragawa Estuary Barrage survey conducted (Mar. 1995). |
July | 1994 | Intermediate appeal filed on the case of suspension of construction (Nagoya High Court). |
Mar.-Apr. | 1994 | Round table conference held (8 sessions). |
Mar. | 1995 | Change of implementation plan approved. Facility management policy indicated. Facility management regulations approved. Survey report submitted to Construction Minister Nosaka. |
Apr. | 1995 | Management started. |
Apr. | 1995 | Monitoring of Nagaragawa Estuary Barrage conducted (March 2001). |
May | 1995 | Construction Minister Nosaka: "Full-scale operation from May 23." Note: Basic plan = The Basic Plan for Water Resource Development in the Kiso River Water System |
July 6, | 1995 | All gates brought into operation. |
July | 1997 | Dredging in the mound section completed. |
Apr. | 1998 | Diversion of water to Nagara aqueduct started; Diversion to Chusei water supply system started. |
Dec. | 1998 | Court-of-appeal decision on action demanding suspension of construction (Nagoya High Court). |
Sept. | 1999 | 5900 m3/s of discharge observed during Typhoon No. 16. |
Apr. | 2000 | Transition to follow-up survey |
Oct. | 2004 | 8000 m3/sec of discharge, highest since the start of full-scale operation, were observed due to the effects of Typhoon No. 23. |
Note : Basic plan: Basic Plan for Water Resource Development in the Kiso River Water System