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Journal Articles Groundwater Year : 2010

Large-Scale Mapping of Hard-Rock Aquifer Properties Applied to Burkina Faso

Abstract

A country-scale (1:1,000,000) methodology has been developed for hydrogeologic mapping of hard-rock aquifers (granitic and metamorphic rocks) of the type that underlie a large part of the African continent. The method is based on quantifying the “useful thickness” and hydrodynamic properties of such aquifers and uses a recent conceptual model developed for this hydrogeologic context. This model links hydrodynamic parameters (transmissivity, storativity) to lithology and the geometry of the various layers constituting a weathering profile. The country-scale hydrogeological mapping was implemented in Burkina Faso, where a recent 1:1,000,000-scale digital geological map and a database of some 16,000 water wells were used to evaluate the methodology.

Dates and versions

hal-00561090 , version 1 (31-01-2011)

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Nathalie Courtois, Patrick Lachassagne, Robert Wyns, Raymonde Blanchin, Francis D. Bougaïré, et al.. Large-Scale Mapping of Hard-Rock Aquifer Properties Applied to Burkina Faso. Groundwater, 2010, 48 (2), p. 269-283. ⟨10.1111/j.1745-6584.2009.00620.x⟩. ⟨hal-00561090⟩

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