2011 Lake Champlain and Richelieu River floods

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2011 Lake Champlain and Richelieu River floods
Date April 2011 – End June
New York
Quebec (Montérégie)
Deaths None

The 2011 Lake Champlain and Richelieu River floods was a series of water level increases that began during the end of April 2011 and caused a subsequent overflow of the Richelieu River in Canada and Lake Champlain in the United States.[1] The floods affected about 3,000 homes in Montérégie[2][3] and have caused an estimated six million U.S. dollars of damage in seven counties in the northern area of Vermont.[4][5] Similar damage has been reported in New York State.

In Quebec, the major cities affected by the flooding were Venise-en-Quebec, Noyan, Saint-Jean-sur-Richelieu, Henryville, Saint-Paul-de-l'Île-aux-Noix and Sainte-Anne-de-Sabrevois.[6] On May 5, the Canadian Forces were requested to help evacuate residents and build dikes to try to protect areas at risk.

Operation Lotus[edit]

Operation Lotus was the name of the military operation to assist citizens in the Montérégie area in response to a formal request from the province of Quebec for assistance, following this natural disaster.[7] The Canadian Forces worked to limit the damage caused by the worst floods to occur in the valley of the Richelieu River and on Lake Champlain over the previous 150 years.[8] Over 650 Canadian soldiers and sailors participated at one time or another in Operation Lotus until 17 June.[9]


  1. ^ Medalie, L. and S.A. Olson (2013). High-water Marks from Flooding in Lake Champlain from April through June 2011 and Tropical Storm Irene in August 2011 in Vermont. Reston, Va.: U.S. Department of the Interior, U.S. Geological Survey.
  2. ^ Lévesque, Lia; St-Arnaud, Pierre; La Presse canadienne (May 6, 2011), L'armée se déploie en Montérégie » selon Jean Charest (in French), La Tribune (Sherbrooke) 
  3. ^ Inondations en Montérégie : l'eau monte encore plus (in French), Radio-Canada, May 5, 2011, retrieved May 9, 2011 
  4. ^ Jack Thurston (May 10, 2011). "FEMA teams assess Vermont flooding". NECN.com. Retrieved May 15, 2011. 
  5. ^ Sue Minter (May 13, 2011). "Lake Champlain flood damage estimates for roads and bridges top $6 million". Communiqué de presse. VTDigger.org. Retrieved May 15, 2011. 
  6. ^ "Inondations en Montérégie : l'armée à l'œuvre, Charest sur le terrain" (in French). Radio Canada. May 5, 2011. Retrieved May 13, 2011. 
  7. ^ "Military aids weary Que. flood victims". CBC News. May 5, 2011. 
  8. ^ "Inondations en Montérégie : déploiement de l'armée et visite de Jean Charest" (in French). May 5, 2011. 
  9. ^ "The Government Of Canada And The Canadian Forces Assist Those Affected By Flooding In The Province Of Quebec". May 5, 2011.