Improving assessment of groundwater-resource sustainability with deterministic modelling: a case study of the semi-arid Musi sub-basin, South India
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 pri...
| Main Authors: | , , , , |
|---|---|
| Format: | Journal Article |
| Language: | Inglés |
| Published: |
2013
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/40284 |
| _version_ | 1855513866361896960 |
|---|---|
| author | Massuel, S. George, B.A. Venot, Jean-Philippe Bharati, Luna Acharya, S. |
| author_browse | Acharya, S. Bharati, Luna George, B.A. Massuel, S. Venot, Jean-Philippe |
| author_facet | Massuel, S. George, B.A. Venot, Jean-Philippe Bharati, Luna Acharya, S. |
| author_sort | Massuel, S. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | 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-km2 Musi River sub-basin (South India), human interventions have dramatically impacted the hard-rock aquifers, with a water-table drop of 0.18m/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 waterallocation modelling framework used to guide decision makers and water-resources managers worldwide. |
| format | Journal Article |
| id | CGSpace40284 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| record_format | dspace |
| spelling | CGSpace402842025-03-11T09:50:20Z Improving assessment of groundwater-resource sustainability with deterministic modelling: a case study of the semi-arid Musi sub-basin, South India Massuel, S. George, B.A. Venot, Jean-Philippe Bharati, Luna Acharya, S. groundwater management water resources water supply sustainability arid lands river basins aquifers models case studies 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-km2 Musi River sub-basin (South India), human interventions have dramatically impacted the hard-rock aquifers, with a water-table drop of 0.18m/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 waterallocation modelling framework used to guide decision makers and water-resources managers worldwide. 2013 2014-06-13T14:47:19Z 2014-06-13T14:47:19Z Journal Article https://hdl.handle.net/10568/40284 en Limited Access Massuel, S.; George, B. A.; Venot, J.-P.; Bharati, Luna; Acharya, S. 2013. Improving assessment of groundwater-resource sustainability with deterministic modelling: a case study of the semi-arid Musi sub-basin, South India. Hydrogeology Journal, 21:1567-1580. |
| spellingShingle | groundwater management water resources water supply sustainability arid lands river basins aquifers models case studies Massuel, S. George, B.A. Venot, Jean-Philippe Bharati, Luna Acharya, S. Improving assessment of groundwater-resource sustainability with deterministic modelling: a case study of the semi-arid Musi sub-basin, South India |
| title | Improving assessment of groundwater-resource sustainability with deterministic modelling: a case study of the semi-arid Musi sub-basin, South India |
| title_full | Improving assessment of groundwater-resource sustainability with deterministic modelling: a case study of the semi-arid Musi sub-basin, South India |
| title_fullStr | Improving assessment of groundwater-resource sustainability with deterministic modelling: a case study of the semi-arid Musi sub-basin, South India |
| title_full_unstemmed | Improving assessment of groundwater-resource sustainability with deterministic modelling: a case study of the semi-arid Musi sub-basin, South India |
| title_short | Improving assessment of groundwater-resource sustainability with deterministic modelling: a case study of the semi-arid Musi sub-basin, South India |
| title_sort | improving assessment of groundwater resource sustainability with deterministic modelling a case study of the semi arid musi sub basin south india |
| topic | groundwater management water resources water supply sustainability arid lands river basins aquifers models case studies |
| url | https://hdl.handle.net/10568/40284 |
| work_keys_str_mv | AT massuels improvingassessmentofgroundwaterresourcesustainabilitywithdeterministicmodellingacasestudyofthesemiaridmusisubbasinsouthindia AT georgeba improvingassessmentofgroundwaterresourcesustainabilitywithdeterministicmodellingacasestudyofthesemiaridmusisubbasinsouthindia AT venotjeanphilippe improvingassessmentofgroundwaterresourcesustainabilitywithdeterministicmodellingacasestudyofthesemiaridmusisubbasinsouthindia AT bharatiluna improvingassessmentofgroundwaterresourcesustainabilitywithdeterministicmodellingacasestudyofthesemiaridmusisubbasinsouthindia AT acharyas improvingassessmentofgroundwaterresourcesustainabilitywithdeterministicmodellingacasestudyofthesemiaridmusisubbasinsouthindia |