Integrating cost and benefit considerations with supply- and demand-based strategies for basin-scale groundwater management in South-West India

Abstract

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

Agricultural groundwater management in the Upper Bhima Basin, India: current status and future scenarios

“…Basin-aggregated groundwater recharge in the control scenario ( programmes in the Upper Bhima Basin is discussed by Kumar et al (2012). Groundwater elevations for three representative observation wells: BM-20 (upper basin), BM80 (middle basin) and BM-110 (lower basin) were selected for presentation of the results for 6 selected scenarios, including the control (A1), best-case (B1), worst-case (C3), and three intermediate-cases (D3, E5 and F1), as shown in Fig.…”

Balancing-out floods and droughts: Opportunities to utilize floodwater harvesting and groundwater storage for agricultural development in Thailand

“…Small-scale systems capture water for local benefit that when considered independently, have a relatively small local impact but when considered collectively at larger scales, have a multiplier effect that can be significant in creating downstream impacts that may be positive and/or negative in hydrologic, social and economic terms (Kumar et al, 2012). In keeping with these principles and mindful of the risks when new developments are introduced into seasonally-stressed basins, small-scale distributed water harvesting systems that only tap into flows that are in excess of the existing storage capacity and without capture, would lead to increased flood risk are proposed.…”

Meta‐Modeling‐Based Groundwater Remediation Optimization under Flexibility in Environmental Standard

“…The remediation of contaminated groundwater is a complicated, time-consuming, and expensive task (Alagha et al, 2013;Gebregziabher et al, 2013). In order to increase the efficiency of remediation systems and to reduce the cost associated with remedial actions, decision-makers mostly rely on integrated simulation and optimization models (Ayenew et al, 2013;Kumar et al, 2012;Masih et al, 2012;Lu et al, 2014). The simulation efforts are forecast to the spatial and temporal variation of the contamination plume, while the optimization studies are to identify the optimal strategies from a number of alternatives (Lu et al, 2008;Lu et al, 2009).…”