Your search found 2 records
1 Kumar, Saideepa; Lagudu, Surinaidu; Pavelic, Paul; Davidson, B. 2012. Integrating cost and benefit considerations with supply- and demand-based strategies for basin-scale groundwater management in South-West India. Water International, 37(4):362-379. (Special issue on "How hydrological models support informed decision making in developing countries" with contributions by IWMI authors). [doi: https://doi.org/10.1080/02508060.2012.708601]
Cost benefit analysis ; Groundwater management ; River basins ; Aquifers ; Upstream ; Downstream ; Climate change ; Irrigated sites ; Simulation models ; Economic aspects / India / Krishna River Basin / Upper Bhima River Sub-basin
(Location: IWMI HQ Call no: PER Record No: H044994)
(1.15 MB)
Efforts to reverse groundwater depletion in hard-rock regions by enhancing aquifer recharge with valuable surface water present complex challenges and trade-offs related to upstream–downstream interactions and equity. Here, groundwater modelling is used in combination with economic valuation techniques to assess the effectiveness of alternative supply and demand measures under different climate change scenarios in an upper sub-basin of the Krishna River basin in India. It is found that aquifer recharge provides benefits for the sub-basin that are not apparent at the basin scale.Water recharged or crops selected in upper catchments should aim to generate economic benefits that outweigh losses faced downstream.
2 Kumar, Saideepa; Pavelic, Paul; George, B.; Venugopal, K.; Nawarathna, B. 2013. Integrated modeling framework to evaluate conjunctive use options in a canal irrigated area. Journal of Irrigation and Drainage Engineering, 139(9):766-774. [doi: https://doi.org/10.1061/(ASCE)IR.1943-4774.0000614]
Canal irrigation ; Irrigated sites ; Models ; Calibration ; Water resources ; Conjunctive use ; Water use ; Surface water ; Groundwater ; Water balance / India / Andhra Pradesh / Srisailam Right Branch Canal
(Location: IWMI HQ Call no: e-copy only Record No: H046146)
(0.84 MB)
In canal irrigated areas, where interactions between surface water and groundwater are high, the conjunctive management of surface water and groundwater can play a significant role in improving water availability in time and space, thereby promoting more equitable distribution of water while maintaining long-term availability of groundwater resources. Achieving a harmonious balance between the use of surface water and groundwater requires careful consideration of the associated benefits, impacts, and trade-offs. In this study, a simple, integrated framework was developed and implemented to characterize and quantify interactions between surface water and groundwater in a canal irrigated area; this framework was used to evaluate the impacts of alternative levels of conjunctive use under varying climate and cropping conditions. Applying the model to a case study area of the Srisailam Right Branch Canal project in Andhra Pradesh, India, indicated that regulating canal supplies to optimum levels can prompt sustainable groundwater use and save up to 48% of allocated canal water; these water savings could be reallocated elsewhere within the irrigated area to promote equity.
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