%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Massuel, Sylvain
%A George, B. A.
%A Venot, J. P.
%A Bharati, L.
%A Acharya, S.
%T Improving assessment of groundwater-resource sustainability with deterministic modelling : a case study of the semi-arid Musi sub-basin, South India
%D 2013
%L fdi:010061227
%G ENG
%J Hydrogeology Journal
%@ 1431-2174
%K Numerical modelling ; Groundwater management ; Water supply ; Hard-rock aquifer ; India
%K INDE
%M ISI:000325803900014
%N 7
%P 1567-1580
%R 10.1007/s10040-013-1030-z
%U https://www.documentation.ird.fr/hor/fdi:010061227
%> https://www.documentation.ird.fr/intranet/publi/2013/11/010061227.pdf
%V 21
%W Horizon (IRD)
%X Since the 1990s, Indian farmers, supported by the government, have partially shifted from surface-water to groundwater irrigation in response to the uncertainty in surface-water availability. Water-management authorities only slowly began to consider sustainable use of groundwater resources as a prime concern. Now, a reliable integration of groundwater resources for water-allocation planning is needed to prevent aquifer overexploitation. Within the 11,000-km(2) Musi River sub-basin (South India), human interventions have dramatically impacted the hard-rock aquifers, with a water-table drop of 0.18 m/a over the period 1989-2004. A fully distributed numerical groundwater model was successfully implemented at catchment scale. The model allowed two distinct conceptualizations of groundwater availability to be quantified: one that was linked to easily quantified fluxes, and one that was more expressive of long-term sustainability by taking account of all sources and sinks. Simulations showed that the latter implied 13 % less available groundwater for exploitation than did the former. In turn, this has major implications for the existing water-allocation modelling framework used to guide decision makers and water-resources managers worldwide.
%$ 062 ; 020