Nov. 1961 | Water Resources Development Promotion Law promulgated and implemented Water Resources Development Public Corporation (WARDEC) Law promulgated (implemented in Feb. 1962) |
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Apr. 1962 | Tone and Yodo River Systems designated for water resources development based on the Water Resources Development Promotion Law |
May. | WARDEC established |
Aug. | Tone River System Water Resources Development Basic Plan developed Yodo River System Water Resources Development Basic Plan developed |
Oct. | Comprehensive National Development Plan approved by the Cabinet |
Oct. 1964 | Chikugo River System designated for water resources development based on the Water Resources development Promotion Law |
June 1965 | Kiso River System designated for water resources development based on the Water Resources Development Promotion Law |
Feb. 1966 | Chikugo River System Water Resources Development Basic Plan developed |
Nov. | Yoshino River System designated for water resources development based on the Water Resources Development Promotion Law |
Mar. 1967 | Yoshino River System Water Resources Development Basic Plan developed |
Oct. 1968 | Aichi Canal Public Corporation incorporated into WARDEC Kiso River System Water Resources Development Basic Plan developed |
May 1969 | New Comprehensive National Development Plan approved by the Cabinet |
Dec. 1974 | Ara River System designated for water resources development based on the Water Resources development Promotion Law |
Apr. 1976 | Tone and Ara River System Water Resources Development Basic Plan developed |
Nov. 1977 | Third Comprehensive National Development Plan approved by the Cabinet |
June 1987 | Fourth Comprehensive National Development Plan approved by the Cabinet |
Oct. | National land Agency developed National Comprehensive Water Resources Plan (Water Plan 2000). |
Feb. 1990 | Toyo River system designated for water resources development based on the Water Resources development Promotion Law |
May | Toyo River System Water Resources Development Basic Plan developed |
Mar. 1998 | Grand Design for National Development in the 21st Century (Fifth Comprehensive National Development Plan) approved by the Cabinet |
June 1999 | National land Agency developed National Comprehensive eater Resources Plan (Water Plan 21). |
Dec. 2001 | Public corporations consolidation plan approved by the Cabinet |
Dec. 2002 | Japan Water Agency Law promulgated and implemented |
Oct. 2003 | Japan Water Agency established |
Oct. 2003 | Japan Water Agency Law Enforcement Ordinance promulgated and implemented |
Oct. 2003 | 1st Mid-Term Objective instructed by MLIT |
Oct. 2003 | 1st Mid-Term Plan made |
Oct. 2003 | Work Procedures of Japan Water Agency enacted |
Dec. 2003 | Tokura Dam construction stop policy made |
Jun. 2004 | Basic Plan for Kiso River System Water Resources Development totally altered. |
Mar. 2005 | Boso Canal construction completed |
Mar. 2005 | Aichi Canal Stage II (Canal Facilities) construction completed |
Apr. 2005 | Basic Plan for Chikugo River System Water Resources Development totally altered |
Apr. 2005 | Ryochiku-heiya Canal Stage II construction projected under JWA |
Feb. 2006 | Basic Plan for Toyo River System Water Resources Development totally altered |
Mar. 2006 | Kagawa Canal Emergency Reconstruction (joint facility) completed |
Mar. 2007 | Aichi Canal Stage II (related to Makio Dam) construction completed |
Jan. 2008 | Toyogawa Canal Stage II (Large-scale earthquake measures, Asbestos pipe removal measures) projected under JWA |
Feb. 2008 | 2nd Mid-Term Objective instructed from MLIT |
Mar. 2008 | 2nd Mid-Term Plan made |
Mar. 2008 | Tokuyama Dam construction completed |
Jun. 2008 | Basic Plan for Toyo River System Water Resources Development partially revised. |
Jun. 2008 | Basic Plan for Kiso River System Water Resources Development partially revised. |
Jun. 2008 | Kiso River System Link Canal projected under JWA |
Jun. 2008 | Kiso River System Link Canal projected under JWA |
Jun. 2008 | Basic Plans for Tone and Ara River Systems Water Resources Development totally altered |
Mar. 2009 | Basid Plans for Tone and Ara River Systems Water Resources Development partially altered. |
Mar. 2009 | Basic Plan for Kiso River System Water Resources Development partially revised |
Mar. 2009 | Kiso River Right Bank Facilities Emergency Reconstruction Project projected under JWA |
Mar. 2009 | Emergency reconstruction of Inbanuma Development completed. |
Mar. 2009 | Emergency reconstruction of Kagawa Canal Facilities (facilities exclusive to domestic water) completed. |
Mar. 2010 | Emergency reconstruction of Gunma Canal facilities completed. |
Mar. 2011 | Takizawa Dam construction completed |
Feb. 2013 | Basic Plan for Chikugo River System Water Resources Development partially altered |
Feb. 2013 | Fukuoka Canal, Oyama Dam construction completed. |
Mar. 2013 | 3rd Mid-Term Plan Objective instructed from MLIT |
Mar. 2013 | 3rd Mid-Term Plan made |
Aug. 2014 | Basic Plans for Tone and Ara Rivers Water Resources Development partially altered |
Dec. 2014 | Emergency reconstruction of both Gunma Canal and Boso Canal projected under JWA |
Feb. 2015 | Large scale Earthquake Measures for Tone Canal projected under JWA |
Mar. 2015 | Kiso River Right Bank Facilities Emergency Reconstruction completed |