| Date - Field | Ghana - Geography - note |
2012 January Geography - note | Lake Volta is the world's largest artificial lake by surface area (8,482 sq km; 3,275 sq mi) |
2011 January Geography - note | Lake Volta is the world's largest artificial lake |
2010 January Geography - note | Lake Volta is the world's largest artificial lake |
2009 January Geography - note | Lake Volta is the world's largest artificial lake |
2008 January Geography - note | Lake Volta is the world's largest artificial lake |
2007 January Geography - note | Lake Volta is the world's largest artificial lake |
2006 January Geography - note | Lake Volta is the world's largest artificial lake |
2005 January Geography - note | Lake Volta is the world's largest artificial lake |
2004 January Geography - note | Lake Volta is the world's largest artificial lake |
2003 January Geography - note | Lake Volta is the world's largest artificial lake |
2002 January Geography - note | Lake Volta is the world's largest artificial lake |
2001 January Geography - note | Lake Volta is the world's largest artificial lake; northeasterly harmattan wind (January to March) |
2000 January Geography - note | Lake Volta is the world's largest artificial lake; northeasterly harmattan wind (January to March) |