User: How many Olympic venues are there for canoeing
Assistant: For the Summer Olympics there are 26 venues that have been or will be used in canoeing. Initially set for canoe sprint (flatwater racing until November 2008), canoe slalom (slalom racing until November 2008) was first added at the 1972 Summer Olympics in Munich. Dropped after those games, canoe slalom was reinstituted at the 1992 Summer Olympics in Barcelona.

Games	Venue	Other sports hosted at venue for those games	Capacity	Ref.
1936 Berlin	Berlin-Grünau Regatta Course	Rowing	19,000	
1948 London	Henley Royal Regatta	Rowing	Not listed.	
1952 Helsinki	Taivallahti	None	Not listed.	
1956 Melbourne	Lake Wendouree	Rowing	14,300	
1960 Rome	Lake Albano	Rowing	10,000	
1964 Tokyo	Lake Sagami	None	1,500	
1968 Mexico City	Virgilio Uribe Rowing and Canoeing Course	Rowing	17,600	
1972 Munich	Eiskanal (slalom)	None	25,000	
Regattastrecke Oberschleißheim (sprint)	Rowing	41,000	
1976 Montreal	Notre Dame Island	Rowing	27,000	
1980 Moscow	Krylatskoye Sports Complex Canoeing and Rowing Basin	Rowing	21,600	
1984 Los Angeles	Lake Casitas	Rowing	4,680	
1988 Seoul	Han River Regatta Course/Canoeing Site	Rowing	25,000	
1992 Barcelona	Canal Olímpic de Catalunya (sprint)	None	500	
Parc Olímpic del Segre (slalom)	None	2,500	
1996 Atlanta	Lake Lanier (sprint)	Rowing	17,300	
Ocoee Whitewater Center (slalom)	None	14,400	
2000 Sydney	Penrith Whitewater Stadium (slalom)	None	12,500	
Sydney International Regatta Centre (sprint)	Rowing	20,000	
2004 Athens	Olympic Canoe/Kayak Slalom Centre (slalom)	None	3,150	
Schinias Olympic Rowing and Canoeing Centre (sprint)	Rowing	14,000	
2008 Beijing	Shunyi Olympic Rowing-Canoeing Park	Rowing, Swimming (marathon)	37,000	
2012 London	Dorney Lake (sprint)	Rowing	30,000	
Lee Valley White Water Centre (slalom)	None	12,000	
2016 Rio de Janeiro	Lagoa Rodrigo de Freitas (sprint)	Rowing	14,000	
Olympic Whitewater Stadium (slalom)	None	8,000	
2020 Tokyo	Kasai Rinkai Park (slalom)	None	7,500	
Sea Forest Waterway (sprint)	Rowing	12,800