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Articles

The April–May 2008 flood event in the Saint John River Basin: Causes, assessment and damages

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Pages 118-128 | Received 15 Jul 2014, Accepted 16 Jan 2015, Published online: 01 Apr 2015
 

Abstract

In April–May 2008, New Brunswick (NB) experienced its worst spring flooding in 35 years along the entire length of the Saint John River and several of its tributaries. Snow water equivalent (SWE) in the snowpack had remained high during the winter and early spring. Warm temperatures and rainfall caused some of the snowpack to melt, which resulted in an increase in river water levels above flood stage in several communities. A major storm on 28 and 29 April 2008 produced heavy rainfall in the upper basin, and this rain-on-snow event resulted in severe flooding at several communities along the river. The flood affected some 1600 properties, causing in excess of CAD $23 million in damages (2008 dollars), but no deaths or serious injuries resulted.

En avril–mai 2008, le Nouveau-Brunswick (NB) a connu sa pire inondation du printemps en 35 ans sur toute la longueur de la rivière Saint-Jean et dans plusieurs de ses affluents. L’équivalent eau-neige (EEN) dans le manteau neigeux était demeuré élevé pendant l’hiver et au début du printemps. Les températures élevées et les précipitations ont fait fondre une partie de la neige accumulée, ce qui a entraîné une hausse des niveaux d’eau au-dessus du niveau d’inondation dans plusieurs collectivités. Une tempête majeure survenue les 28 et 29 avril 2008 a occasionné des pluies abondantes dans la partie supérieure du bassin, et cet événement pluie-neige s’est traduit par de graves inondations dans plusieurs collectivités le long de la rivière. L’inondation a causé préjudice à quelque 1 600 propriétés et a entraîné des dommages de plus de CAD 23 millions de dollars (de 2008), bien qu’on ne déplore aucun décès ni aucune blessure grave.

Acknowledgements

The authors thank Ms. Nelda Craig, Mr. Jeff Stymiest and Reid McLean of the New Brunswick Department of Environment and Local Government and Ms. Lisa Munn of the New Brunswick Emergency Measures Organization for their assistance with the preparation of this paper.

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