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| Titel |
Agricultural groundwater management in the Upper Bhima Basin, India: current status and future scenarios |
| VerfasserIn |
L. Surinaidu, C. G. D. Bacon, P. Pavelic |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 17, no. 2 ; Nr. 17, no. 2 (2013-02-06), S.507-517 |
| Datensatznummer |
250017706
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| Publikation (Nr.) |
 copernicus.org/hess-17-507-2013.pdf |
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| Zusammenfassung |
| The basaltic aquifers of the Upper Bhima River basin in southern India are
heavily utilized for small-scale agriculture but face increasing
demand-related pressures along with uncertainty associated with climate
change impacts. To evaluate likely groundwater resource impacts over the
coming decades, a regional groundwater flow model for the basin was
developed. Model predictions associated with different climate change and
abstraction scenarios indicate that the continuation of current rates of abstraction
would lead to significant groundwater overdraft, with groundwater elevations
predicted to fall by −6 m over the next three decades. Groundwater
elevations can however be stabilized, but would require 20–30% of the
mean surface water discharge from the basin to be recharged to groundwater,
along with reductions in pumping (5–10%) brought about by improved water
efficiency practices and/or shifts towards lower-water use crops. Modest
reductions in pumping alone cannot stabilize groundwater levels; targeted
conjunctive use and improved water use efficiency are also needed. |
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