1st Conference LECS '84
Venue: Otsu City, Shiga, Japan
Date: 27-31, August, 1984
Main Host: Gov. of Shiga Prefecture
Co-Hosts: NIRA
Supporting Agencies: UNEP, World Bank, UNU, OECD, US State of Michigan, Brazilian State of Rio Grande do Sul, Chinese State of Hunan and Japanese Ministry of Environment, Land Management, Foreign Affairs and Home Affairs, Associations on Lake Biwa -Yodo River Systems and Japanese Environment 
No. of Participants: 2,412(29 countries)
Main Theme: Toward a more harmonious inter-relationship between man and lakes 
 

2nd Conference MAKINAC'86
Venue: Mackinac Island, Michigan, USA
Date: 18-21, May, 1986
Main Host: Gov. of Michigan State
Co-Hosts: 
Supporting Agencies: US EPA, Canadian Ministry of Environment, Shiga Prefecture of Japan,Other 15 NGOs and Private Companies 
No. of Participants: 400(42 countries)
Main Theme: Water contamination by toxic substances of large lakes in the world

3rd Conference BALATON'88
Venue: Kesthey City, Hungary
Date: 12-17, September, 1988
Main Host: Min. of Env. & Water Resource
Co-Hosts: Hungarian Academy of Science, ILEC
Supporting Agencies: UNEP, Swedish Foundation on International Science, Japanese Foundation on Global Environment, Government of Shiga Prefecture, Env. Conservation Society in Shiga
No. of Participants: 230(31 countries)
Main Theme: Environmental Issues on lakes such as eutrophication, acidification, toxic substances, modeling, approaches to rehabilitation and roles of stakeholders

4th Conference HANGZHOU'90
Venue: Hangzhou City, China
Date: 5-9, September, 1990
Main Host: Min. of Environmental Protection
Co-Hosts: Academy of Environmental Science, ILEC
Supporting Agencies: UNEP, UNCRD, IWRA, IAWPRC,Chinese Foundation on Natural Science,SIL, Shiga Prefecture
No. of Participants: 422(31 countries)
Main Theme: Eutrophication of lakes

5th Conference STRESA'93
Venue: Stresa City, Italy
Date: 17-21, May, 1993
Main Host: Institute of Hydrobiology
Co-Hosts: Min. of Environment, IAWPRC, ILEC
Supporting Agencies: FAO, Min. of Foreign Affairs
No. of Participants: 357(44 countries)
Main Theme: Strategies for lake ecosystems beyond 2000

6th Conference Kasumigaura'95
Venue: Tsukuba & Tsuchiura Cities, Ibaraki, Japan
Date: 23-27, October, 1995
Main Host: Gov. of Ibaraki Prefecture
Co-Hosts: Ministries of Env. and Construction,Tsukuba & Tsuchiura Cities, Tsukuba University, ILEC
Supporting Agencies: ADB, OECD, ESCAP, UNDP, UNCRD, World Bank, JICA, NIRA,Ministries of Env., Land, Construction, etc., Public Corporation for Water Resource Development, Shiga Prefecture, etc.
No. of Participants: 8,203(75 countries)
Main Theme: Harmonizing human life with lakes toward the sustainable use of lakes

7th Conference LACAR'97
Venue: Sanmartin de Los Andes City, Argentina
Date: 26-31, October, 1997
Main Host: INA
Co-Hosts: Min. of Public Economy Service, Sanmartin de Los Andes City, ILEC
Supporting Agencies: Japan Foundation, Japanese Global Environment Fund, UNEP, OECC,Shiga Prefecture, Ibaraki Prefecture 
No. of Participants: 500(36 countries)
Main Theme: Keep the natural lake environment clean for future generations 

8th Conference Lake'99
Venue: Copenhagen City, Denmark
Date: 17-20, May, 1999
Main Host: Copenhagen City
Co-Hosts: LEC
Supporting Agencies: Ministries of Foreign Affaires & Environment and Energy,Danish Society for Nature Protection,EU Env. Agency, UNEP, OECC,Shiga Prefecture, Ibaraki Prefecture
No. of Participants: 487(60 countries)
Main Theme: Sustainable Lake Management

 
9th Conference BIWAKO 2001
Venue: Otsu City, etc., Shiga, Japan
Date: 11-16, November, 2001
Main Host: Gov. of Shiga Prefecture
Co-Hosts: Ministries of Env., Land and Transportation, Labor and Health,Otsu City, Public Corporation for Water Resource Development, ILEC 
Supporting Agencies: UNEP, UNDP, UNESCO, UNU, UNCRD, ADB, WWAP, GWP, WWF, Ministries of General affaires, Foreign Affaires, Education, agriculture, Economy and Industry, Ibaraki Prefecture 
No. of Participants: 3,617(75 countries)
Main Theme: Partnership for sustainable life in lake environments: Making global freshwater mandates work 

10th Conference Chicago 2003
Venue: Chicago City, Illinois, USA
Date: 22- 26, June, 2003
Main Host: IAGLR
Co-Hosts: ILEC
Supporting Agencies: US EPA, Shiga Prefecture, Ibaraki Prefecture
No. of Participants: 700(36 countries)
Main Theme: Global threats to large lakes

11th Conference Kenya 2005
Venue: Nairobi City, Kenya
Date: 31, October - 4 November, 2005
Main Host: Ministry of Water and Irrigation, Kenya
Co-Hosts: ILEC
Supporting Agencies: GWP, Coca Cola, Shiga Prefecture, Ibaraki Prefecture, World Bank, UNEP, JICA, UNESCO, German Technical Cooperation, Kenya Wildlife Service
No. of Participants 770 (47 countries) 
Main Theme: Management of Lake Basins for their Sustainable Use: Global Experiences and African Issues

12th Conference Taal 2007
Venue: Jaipur, INDIA 
Date: 28, October - 2 November, 2007
Main Host: Ministry of Environment and Forests (MoEF), Government of India 
Co-Hosts: ILEC
Supporting Agencies:  Shiga Prefecture, Ibaraki Prefecture
No. of Participants: XXX (59 countries) 
Main Theme: Conserving Lakes and Wetlands for Future