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TitleA 3D unified geological model of the Milk River transboundary aquifer (Alberta-Montana)
AuthorPétré, M -A; Rivera, A; Lefebvre, R; Ledoux, E
SourceInternational Association of Hydrogeologists, Memoirs 2012, 2012.
LinksOnline - En ligne
Alt SeriesEarth Sciences Sector, Contribution Series 20130500
PublisherInternational Association of Hydrogeologists
Meeting39th Congress of the International Association of Hydrogeologists (IAH); Niagara Falls; CA; September 16-21, 2012
Mediapaper; on-line; digital
File formatpdf
NTS72E/01; 72E/03; 72E/04; 82H/01
AreaMilk River; Southern Alberta; Northern Montana
Lat/Long WENS-112.5000 -110.0000 50.2500 48.0000
Subjectshydrogeology; aquifers; groundwater; groundwater resources; groundwater regimes; models; modelling
Illustrationsgraphs; location maps; diagrams
ProgramGroundwater Geoscience, Aquifer Assessment & support to mapping
AbstractThe Milk River transboundary aquifer straddles southern Alberta (Canada) and northern Montana (United States), in a semi-arid region considered water short. This confined sandstone aquifer is a source for municipal supply and agricultural uses on the Canadian side, as well as for secondary oil recovery on the US-side of the border. The transboundary aquifer is part of the inventory of UNESCO ISARM-Americas initiative, which encourages riparian states to work cooperatively toward mutually beneficial and sustainable aquifer development. The objectives of this study are to better understand the dynamics of the Milk River aquifer in order to make recommendations for a sustainable management and its good governance by the two international jurisdictions, as recommended in the UNGA resolution 63/124 on the Law of Transboundary Aquifers. In these contexts, models can constitute useful tools for informed decisions. In the case of the Milk River aquifer, models could support scientists and managers from both countries in avoiding potential tensions linked to the water shortage context in this region. In this context, a unified geological conceptual 3D model of the aquifer was developed. The unified conceptual model covers circa 70 000 km2. The study area is limited to the North/Northeast and Southeast by gas fields. The unified conceptual model will form the basis for a future 3D numerical hydrogeological model of groundwater flow in the Milk River aquifer across the Canada-US.
Summary(Plain Language Summary, not published)
The 3D unified geological model of the Milk River Transboundary Aquifer has been developed.The Milk River Aquifer spans southern Alberta and northern Montana.Until now, the previous studies were limited by the Canada#USA border, preventing a sound understanding of this shared resources. The geological data on both sides of the international border have been gathered and unified in order to represent the Milk River Aquifer in its entirety. The determination of stratigraphic equivalence through the border allowed representing the geological units (especially the Milk River Aquifer) continuously from northern Montana to southern Alberta.The hydrogeological role of the modeled geological units is described. This first transboundary 3D model constitutes the basis of a future hydrogeological model of the Milk River Aquifer.