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TitleModeling the evolution of a regional fractured-rock aquifer system in southern Quebec following the last deglaciation
AuthorLaurencelle, M; Lefebvre, R; Rivard, C; Ladevèze, P; Benoit, N; Carrier, M A
SourceGeoMontréal 2013, Proceedings of the Canadian Geotechnical Conference; 2013.
Year2013
Alt SeriesEarth Sciences Sector, Contribution Series 20140054
PublisherIAH
MeetingGéoMontréal 2013, the 66th Canadian Geotechnical Conference and the 11th Joint CGS/IAH-CNC Groundwater Conference; Montreal; CA; September 29 - October 3, 2013
Documentbook
Lang.English
Mediapaper
File formatpdf
ProvinceQuebec
NTS31H/01; 31H/02; 31H/03; 31H/06; 31H/07; 31H/08; 31H/09; 31H/10; 31H/11; 31H/14; 31H/15; 31H/16; 31I/02
AreaMontérégie-Est; Richelieu River; Yamaska River; St. Lawrence River
Lat/Long WENS -73.5000 -72.0000 46.2500 45.0000
Subjectshydrogeology; aquifers; groundwater; groundwater resources; groundwater regimes
Illustrationslocation maps; tables; profiles
ProgramAquifer Assessment & support to mapping, Groundwater Geoscience
AbstractThe ~9 000 km2 Montérégie-Est study area covers the watersheds of the Richelieu and Yamaska rivers. Numerical modeling of its fractured-rock aquifer system aims to provide an understanding of current groundwater flow dynamics, but also of its evolution through recent geologic time. The conceptual model of the aquifer system is based on an extensive regional characterization. The simulation approach involves long cross-sectional 2D conceptual and numerical models extending from the Appalachians (SE) to the St. Lawrence River (NW). Alternative conditions are simulated to assess the impacts of geological events: glacier melting, invasion of the aquifer by Champlain Sea water, and subsequent system adjustments up to present-day conditions. These simulations provide insight into processes that led to the current distribution of brackish groundwater and the ongoing aquifer desalinization process.
Summary(Plain Language Summary, not published)
A numerical model of a regional bedrock aquifer system is being carried out in Montérégie Est (QC). It aims to improve the understanding of current groundwater flow dynamics, but also of its evolution through recent geologic time. The conceptual model of the aquifer system is based on an extensive regional characterization. Cross-sectional 2D conceptual and numerical models extending from the Appalachians (SE) to the St. Lawrence River (NW) have been developed. These simulations provide insight into processes that led to the current distribution of brackish groundwater and the ongoing aquifer desalinization process.
GEOSCAN ID293959