Understanding and managing groundwater and salinity in a tropical conjunctive water use irrigation district

Petheram, Cuan; Bristow, Keith L.; Nelson, Paul N.

doi:10.1016/j.agwat.2008.04.016

Cited by 32 publications

(12 citation statements)

References 9 publications

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“…Certainty, there are limits to generalising from a single case (e.g. see the distinct history of developments relating to conjunctive management of seawater intrusion, Petheram et al 2008). However many of these findings appear consistent with recent national evaluations (NWC 2011a (NWC 2011b, p. 11).…”

Section: Australiasupporting

confidence: 64%

Conjunctive Management Through Collective Action

Holley

Sinclair

López-Gunn

et al. 2016

Integrated Groundwater Management

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This chapter focuses on the interaction between conjunctive management and collective action. Collective action has several characteristics that provide a natural 'fit' with conjunctive management. These include building trust and ownership to enhance water user's acceptance of the need for better and more integrated management and resolving conflict and facilitating trade-offs between and across water users. But what are the opportunities and challenges for conjunctive management through collective action? And what types of settings encourage broadbased collective action by water users and governments? These questions are addressed through a comparative analysis of specific instances of groundwater governance in Australia, Spain, and the western United States of America. For each case, the diverse policy and institutional settings are explained, and consideration given to the motivators for, and successes of, conjunctive management and collective action. The chapter draws comparisons across the cases to suggest lessons on incentives for conjunctive management, as well as exploring its challenges, before identifying future directions for more effective integrated water management.

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Section: Australiasupporting

confidence: 64%

Conjunctive Management Through Collective Action

Holley

Sinclair

López-Gunn

et al. 2016

Integrated Groundwater Management

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“…Surface-groundwater interactions have been investigated in several studies (Hoehn and Scholtis, 2011;Lenahan and Bristow, 2010;Sophocleous and Perkins, 2000;Winter, 1999;Kollet and Maxwell, 2006;Krause et al, 2007;Lamontagne et al, 2005;Liang et al, 2007;Meire et al, 2010;Panday and Huyakorn, 2004;Shlychkov, 2008), but floodplains in arid/semi-arid regions have received considerably less attention (Jolly et al, 2008). One of the major limitations in this regard is lack of high quality observed data (Pilgrim et al, 1988). This has resulted in application of experiences from humid regions to drier regions without knowledge of the consequences.…”

Section: Figmentioning

confidence: 99%

“…water resulted in rising water table levels and the formation of a large groundwater mound during the wet season of 2000 (Petheram et al, 2008).…”

Section: Figmentioning

confidence: 99%

Impacts of groundwater extraction on salinization risk in a semi-arid floodplain

Alaghmand

Beecham

Hassanli

2013

Nat. Hazards Earth Syst. Sci.

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Abstract. In the lower River Murray in Australia, a combination of a reduction in the frequency, duration and magnitude of natural floods, rising saline water tables in floodplains, and excessive evapotranspiration have led to an irrigationinduced groundwater mound forcing the naturally saline groundwater onto the floodplain. It is during the attenuation phase of floods that these large salt accumulations are likely to be mobilised and discharged into the river. This has been highlighted as the most significant risk in the MurrayDarling Basin and the South Australian Government and catchment management authorities have subsequently developed salt interception schemes (SIS). The aim of these schemes is to reduce the hydraulic gradient that drives the regional saline groundwater towards the River Murray. This paper investigates the interactions between a river (River Murray in South Australia) and a saline semi-arid floodplain (Clark's floodplain) that is significantly influenced by groundwater lowering due to a particular SIS. The results confirm that groundwater extraction maintains a lower water table and a higher amount of fresh river water flux to the saline floodplain aquifer. In terms of salinity, this may lead to less solute stored in the floodplain aquifer. This occurs through three mechanisms, namely extraction of the solute mass from the system, reducing the saline groundwater flux from the highland to the floodplain and changing the floodplain groundwater regime from a losing to a gaining one. It is shown that groundwater extraction is able to remove some of the solute stored in the unsaturated zone and this can mitigate the floodplain salinity risk. A conceptual model of the impact of groundwater extraction on floodplain salinization has been developed.

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“…In the PC1-PC3 space (Figure 3c), a negative relationship between PC1 and PC3 (most evident in CLUSTER 4) may indicate that fertilization enhances groundwater salinity. In contrast, the positive relationship between PC1 and PC3 (most evident in CLUSTER 2) probably reflects a common situation in arid areas that high salinity of irrigation water can limit agricultural development [58,59]. According to our field investigation and existing studies [60], the agricultural productivity of the farmlands along the river within Gaotai County, where the samples in CLUSTER 2 are located, is indeed influenced by salinity.…”

Section: Clustering Resultsmentioning

confidence: 81%

Investigating Hydrochemical Groundwater Processes in an Inland Agricultural Area with Limited Data: A Clustering Approach

Zheng

Zhang

et al. 2017

Water

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Abstract:Groundwater chemistry data are normally scarce in remote inland areas. Effective statistical approaches are highly desired to extract important information about hydrochemical processes from the limited data. This study applied a clustering approach based on the Gaussian Mixture Model (GMM) to a hydrochemical dataset of groundwater collected in the middle Heihe River Basin (HRB) of northwestern China. Independent hydrological data were introduced to examine whether the clustering results led to an appropriate interpretation on the hydrochemical processes. The main findings include the following. First, in the middle HRB, although groundwater chemistry reflects primarily a natural salinization process, there are evidence for significant anthropogenic influence such as irrigation and fertilization. Second, the regional hydrological cycle, particularly surface water-groundwater interaction, has a profound and spatially variable impact on groundwater chemistry. Third, the interaction between the regional agricultural development and the groundwater quality is complicated. Overall, this study demonstrates that the GMM clustering can effectively analyze hydrochemical datasets and that these clustering results can provide insights into hydrochemical processes, even with a limited number of observations. The clustering approach introduced in this study represents a cost-effective way to investigate groundwater chemistry in remote inland areas where groundwater monitoring is difficult and costly.

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Understanding and managing groundwater and salinity in a tropical conjunctive water use irrigation district

Cited by 32 publications

References 9 publications

Conjunctive Management Through Collective Action

Conjunctive Management Through Collective Action

Impacts of groundwater extraction on salinization risk in a semi-arid floodplain

Investigating Hydrochemical Groundwater Processes in an Inland Agricultural Area with Limited Data: A Clustering Approach

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