The Experts below are selected from a list of 11697 Experts worldwide ranked by ideXlab platform
Olaf A. Cirpka - One of the best experts on this subject based on the ideXlab platform.
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Optimized Sustainable Groundwater Extraction Management: General Approach and Application to the City of Lucknow, India
Water Resources Management, 2013Co-Authors: Ashutosh Singh, Claudius Bürger, Olaf A. CirpkaAbstract:In rapidly developing urban areas of emerging countries, increased water demand has led to enormous Groundwater withdrawal, calling out for Sustainable Groundwater Management. We suggest implementing a Sustainable pumping rate concept based on numerical modeling of the managed aquifer. Sustainability is achieved by constraints regarding (1) a minimum Groundwater discharge rate to gaining rivers (ecological constraint) and (2) a maximum drawdown along the city boundaries (social constraints) to prevent excessive Groundwater depletion in the neighboring peri-urban and rural areas. The total Groundwater extraction is maximized subject to these constraints, leading to specific extraction patterns throughout the city, depending upon the values set for the constraints. The optimization is performed by linear programming. For a given extraction rate, the two constraints can be traded off by the Groundwater manager, causing different wells to be activated or deactivated. We demonstrate the applicability of the methodology by the example of the city of Lucknow, India, but it can be transferred to other cities facing conflicts of managing Groundwater resources.
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optimized Sustainable Groundwater extraction Management general approach and application to the city of lucknow india
Water Resources Management, 2013Co-Authors: Ashutosh Singh, Claudius Bürger, Olaf A. CirpkaAbstract:In rapidly developing urban areas of emerging countries, increased water demand has led to enormous Groundwater withdrawal, calling out for Sustainable Groundwater Management. We suggest implementing a Sustainable pumping rate concept based on numerical modeling of the managed aquifer. Sustainability is achieved by constraints regarding (1) a minimum Groundwater discharge rate to gaining rivers (ecological constraint) and (2) a maximum drawdown along the city boundaries (social constraints) to prevent excessive Groundwater depletion in the neighboring peri-urban and rural areas. The total Groundwater extraction is maximized subject to these constraints, leading to specific extraction patterns throughout the city, depending upon the values set for the constraints. The optimization is performed by linear programming. For a given extraction rate, the two constraints can be traded off by the Groundwater manager, causing different wells to be activated or deactivated. We demonstrate the applicability of the methodology by the example of the city of Lucknow, India, but it can be transferred to other cities facing conflicts of managing Groundwater resources. Copyright Springer Science+Business Media Dordrecht 2013
Michael Kiparsky - One of the best experts on this subject based on the ideXlab platform.
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concurrent governance processes of california s Sustainable Groundwater Management act
Society & Natural Resources, 2020Co-Authors: Anita Milman, Michael KiparskyAbstract:California’s Sustainable Groundwater Management Act (SGMA) is a landmark policy that requires achievement of sustainability at the Groundwater basin level. In this policy review and analysis, we de...
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california Groundwater Management science policy interfaces and the legacies of artificial legal distinctions
Environmental Research Letters, 2019Co-Authors: David Owen, Thomas Harter, Alida Cantor, Nell Green Nylen, Michael KiparskyAbstract:California water law has traditionally treated Groundwater and surface water as separate resources. The 2014 Sustainable Groundwater Management Act (SGMA) broke with this tradition by requiring Groundwater managers to avoid significant and unreasonable adverse impacts to beneficial uses of surface water. This paper considers the trajectory of this partial integration of science, law, and resource Management policy. Drawing on legal analysis and participatory workshops with subject area experts, we describe the challenges of reconciling the separate legal systems that grew out of an artificial legal distinction between different aspects of the same resource. Our analysis offers two main contributions. First, it demonstrates that laws that subdivide an interconnected resource can have legacy effects that linger long after lawmakers begin dismantling the artificial divides. Using SGMA as a case study, the article illustrates the complexities of reconciling law with science, showing that reconciliation is a process that does not end with updating statutes, or with any other single intervention. Second, we introduce a framework for evaluating the elements of an effort to reconcile law with scientific understanding, whether that reform effort involves Groundwater or some other resource. Applying that framework helps reveal where lingering legacy effects still need to be addressed. More generally, it reveals the need for literature addressing science-policy interactions to devote more attention to the multifaceted nature of law and policy reform. Much of that literature describes policy-making in broad and undifferentiated terms, often referring simply to 'the science-policy interface.' But as the SGMA case study illustrates, the complex and multi-layered nature of policy-making means that a successful reform effort may need to address many science-policy interfaces.
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Navigating Groundwater-Surface Water Interactions under the Sustainable Groundwater Management Act
2018Co-Authors: Alida Cantor, Dave Owen, Thomas Harter, Nell Green Nylen, Michael KiparskyAbstract:Author(s): Cantor, Alida; Owen, Dave; Harter, Thomas; Green Nylen, Nell; Kiparsky, Michael | Abstract: California’s Sustainable Groundwater Management Act (SGMA), passed in 2014, recognizes and addresses connections between surface water and Groundwater. The statute is California’s first statewide law to explicitly reflect the fact that surface water and Groundwater are frequently interconnected and that Groundwater Management can impact Groundwater-dependent ecosystems, surface water flows, and the beneficial uses of those flows. As such, SGMA partially remedies the historically problematic practice of treating Groundwater and surface water as legally distinct resources. SGMA requires Groundwater sustainability agencies (GSAs) to manage Groundwater to avoid six undesirable results, including significant and unreasonable adverse impacts on beneficial uses of surface water. While this aspect of SGMA is clearly important, significant uncertainties exist regarding how GSAs will actually define and achieve this goal. Addressing SGMA’s requirements for Groundwatersurface water interactions will be difficult. Defining the issues at stake in any given basin, let alone successfully balancing the range of uncertainties and potentially conflicting interests, will pose challenges for many GSAs. No clear, pre-defined formula exists to guide GSAs in determining what significant and unreasonable depletions of interconnected surface water will be, or whether planned actions will sufficiently avoid them. Yet they are required to do so. Many GSAs will face pressure to aggressively address impacts on surface water in their basin. Many will face equal or greater pressure not to draw the line. Nevertheless, it will fall to the GSAs to make a determination, and to defend it in their Groundwater sustainability plans (GSPs). Therefore, GSAs will likely take on some level of risk—of successful political opposition to their GSP, of succesful legal challenges to their GSP, of their GSP performing ineffectively, or of all of these outcomes. Given the aggressive timeline inherent to SGMA, addressing this risk early will be crucial for preserving Management options. Challenges and risk are not the whole story, however. The process of addressing Groundwater-surface water interactions also offers GSAs an opportunity to help communities and other stakeholders resolve, or avoid, difficult conflicts, and to do so in lasting ways. While California law has only recently begun to seriously address conflicts between surface and Groundwater uses, those conflicts have been occurring for decades, and in some places for over a century. SGMA, in other words, did not create conflict between Groundwater pumping and beneficial uses of surface water; instead it created an opportunity—as well as an obligation—to respond to those challenges. Embracing that opportunity will not be easy, but GSAs that take SGMA as an opportunity to resolve longstanding issues can do lasting good. The research presented here examines some of the legal and institutional questions that will inevitably arise as GSAs seek to address Groundwater-surface water interactions under SGMA. The core goal of this report is to help parties identify and address these questions, and ultimately to let GSAs and stakeholders manage Groundwater-surface water interactions proactively and effectively.
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the importance of institutional design for distributed local level governance of Groundwater the case of california s Sustainable Groundwater Management act
Water, 2017Co-Authors: Michael Kiparsky, Anita Milman, Dave Owen, A T FisherAbstract:In many areas of the world, Groundwater resources are increasingly stressed, and unSustainable use has become common. Where existing mechanisms for governing Groundwater are ineffective or nonexistent, new ones need to be developed. Local level Groundwater governance provides an intriguing alternative to top-down models, with the promise of enabling Management to better match the diversity of physical and social conditions in Groundwater basins. One such example is emerging in California, USA, where new state law requires new local agencies to self-organize and act to achieve Sustainable Groundwater Management. In this article, we draw on insights from research on common pool resource Management and natural resources governance to develop guidelines for institutional design for local Groundwater governance, grounded in California’s developing experience. We offer nine criteria that can be used as principles or standards in the evaluation of institutional design for local level Groundwater governance: scale, human capacity, funding, authority, independence, representation, participation, accountability, and transparency. We assert that local governance holds promise as an alternative to centralized governance in some settings but that its success will depend heavily on the details of its implementation. Further, for local implementation to achieve its promise, there remain important complementary roles for centralized governance. California’s developing experience with local level Groundwater Management in dozens of basins across the state provides a unique opportunity to test and assess the importance and influence of these criteria.
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unanswered questions for implementation of the Sustainable Groundwater Management act
California Agriculture, 2016Co-Authors: Michael KiparskyAbstract:Outlook Unanswered questions for implementation of the Sustainable Groundwater Management Act Michael Kiparsky, Director, Wheeler Water Institute, Center for Law, Energy & the Environment, UC Berkeley School of Law A rig drills a new well in Merced County. In the foreground is a pressure relief structure for subsurface water pipes. Groundwater accounts for between one-third and two-thirds of California’s water use in a given year and serves as a lifeline when surface water runs low during drought. In part because of California’s historical lack of Groundwater use regulation, this crucial resource is threatened. In some areas, declining Groundwater levels have caused the land surface to subside at a rate of more than one inch per month, damaging roads, canals and pipelines. Falling water tables are driving a well-drilling race that threatens farms, communi- ties and ecosystems. To address the problem of chronic groundwa- ter overdraft, SGMA, adopted in 2014, declares a state policy of managing Groundwater sustainably, with sustainability defined as avoiding six specific undesirable results. These are “significant and unreasonable” (1) lowering of Groundwater levels, (2) reduction in Groundwater storage, (3) seawater intrusion, (4) water quality degradation, (5) land subsidence and (6) impacts on beneficial uses of interconnected surface waters. In concept, this forward-thinking framing aligns the requirements of the law with the im- pacts of unSustainable Groundwater use and the actions needed to address those impacts. To accomplish these objectives, SGMA relies primarily on local control, with an enforcement backstop provided by the State Water Resources Control Board. New local entities called groundwa- ter sustainability agencies (GSAs) will do the bulk of the work of implementing SGMA by developing, implementing and updating Groundwater sustain- ability plans (GSPs). A GSP provides the template for achieving Sustainable Groundwater manage- ment in a GSA’s jurisdiction within 20 years. GSAs must be formed by 2017 and GSPs completed by 2020 or 2022. http://calag.ucanr.edu • OCTOBER–DECEMBER 2016 165 Leigh Bernacchi C alifornia is grappling with the implications of the Sustainable Groundwater Management Act (SGMA), a visionary and potentially revolutionary law that could profoundly change the way water is managed in the state. The nature of the revolution, however, is not yet clear. Whether and how SGMA achieves its goals hinges on open questions about its implementation.
Ashutosh Singh - One of the best experts on this subject based on the ideXlab platform.
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Optimized Sustainable Groundwater Extraction Management: General Approach and Application to the City of Lucknow, India
Water Resources Management, 2013Co-Authors: Ashutosh Singh, Claudius Bürger, Olaf A. CirpkaAbstract:In rapidly developing urban areas of emerging countries, increased water demand has led to enormous Groundwater withdrawal, calling out for Sustainable Groundwater Management. We suggest implementing a Sustainable pumping rate concept based on numerical modeling of the managed aquifer. Sustainability is achieved by constraints regarding (1) a minimum Groundwater discharge rate to gaining rivers (ecological constraint) and (2) a maximum drawdown along the city boundaries (social constraints) to prevent excessive Groundwater depletion in the neighboring peri-urban and rural areas. The total Groundwater extraction is maximized subject to these constraints, leading to specific extraction patterns throughout the city, depending upon the values set for the constraints. The optimization is performed by linear programming. For a given extraction rate, the two constraints can be traded off by the Groundwater manager, causing different wells to be activated or deactivated. We demonstrate the applicability of the methodology by the example of the city of Lucknow, India, but it can be transferred to other cities facing conflicts of managing Groundwater resources.
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optimized Sustainable Groundwater extraction Management general approach and application to the city of lucknow india
Water Resources Management, 2013Co-Authors: Ashutosh Singh, Claudius Bürger, Olaf A. CirpkaAbstract:In rapidly developing urban areas of emerging countries, increased water demand has led to enormous Groundwater withdrawal, calling out for Sustainable Groundwater Management. We suggest implementing a Sustainable pumping rate concept based on numerical modeling of the managed aquifer. Sustainability is achieved by constraints regarding (1) a minimum Groundwater discharge rate to gaining rivers (ecological constraint) and (2) a maximum drawdown along the city boundaries (social constraints) to prevent excessive Groundwater depletion in the neighboring peri-urban and rural areas. The total Groundwater extraction is maximized subject to these constraints, leading to specific extraction patterns throughout the city, depending upon the values set for the constraints. The optimization is performed by linear programming. For a given extraction rate, the two constraints can be traded off by the Groundwater manager, causing different wells to be activated or deactivated. We demonstrate the applicability of the methodology by the example of the city of Lucknow, India, but it can be transferred to other cities facing conflicts of managing Groundwater resources. Copyright Springer Science+Business Media Dordrecht 2013
Claudius Bürger - One of the best experts on this subject based on the ideXlab platform.
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Optimized Sustainable Groundwater Extraction Management: General Approach and Application to the City of Lucknow, India
Water Resources Management, 2013Co-Authors: Ashutosh Singh, Claudius Bürger, Olaf A. CirpkaAbstract:In rapidly developing urban areas of emerging countries, increased water demand has led to enormous Groundwater withdrawal, calling out for Sustainable Groundwater Management. We suggest implementing a Sustainable pumping rate concept based on numerical modeling of the managed aquifer. Sustainability is achieved by constraints regarding (1) a minimum Groundwater discharge rate to gaining rivers (ecological constraint) and (2) a maximum drawdown along the city boundaries (social constraints) to prevent excessive Groundwater depletion in the neighboring peri-urban and rural areas. The total Groundwater extraction is maximized subject to these constraints, leading to specific extraction patterns throughout the city, depending upon the values set for the constraints. The optimization is performed by linear programming. For a given extraction rate, the two constraints can be traded off by the Groundwater manager, causing different wells to be activated or deactivated. We demonstrate the applicability of the methodology by the example of the city of Lucknow, India, but it can be transferred to other cities facing conflicts of managing Groundwater resources.
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optimized Sustainable Groundwater extraction Management general approach and application to the city of lucknow india
Water Resources Management, 2013Co-Authors: Ashutosh Singh, Claudius Bürger, Olaf A. CirpkaAbstract:In rapidly developing urban areas of emerging countries, increased water demand has led to enormous Groundwater withdrawal, calling out for Sustainable Groundwater Management. We suggest implementing a Sustainable pumping rate concept based on numerical modeling of the managed aquifer. Sustainability is achieved by constraints regarding (1) a minimum Groundwater discharge rate to gaining rivers (ecological constraint) and (2) a maximum drawdown along the city boundaries (social constraints) to prevent excessive Groundwater depletion in the neighboring peri-urban and rural areas. The total Groundwater extraction is maximized subject to these constraints, leading to specific extraction patterns throughout the city, depending upon the values set for the constraints. The optimization is performed by linear programming. For a given extraction rate, the two constraints can be traded off by the Groundwater manager, causing different wells to be activated or deactivated. We demonstrate the applicability of the methodology by the example of the city of Lucknow, India, but it can be transferred to other cities facing conflicts of managing Groundwater resources. Copyright Springer Science+Business Media Dordrecht 2013
James S Famiglietti - One of the best experts on this subject based on the ideXlab platform.
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a framework for quantifying Sustainable yield under california s Sustainable Groundwater Management act sgma
Sustainable Water Resources Management, 2019Co-Authors: Michelle E Miro, James S FamigliettiAbstract:In California, new Groundwater legislation—the 2014 Sustainable Groundwater Management Act (SGMA)—mandates that Groundwater sustainability agencies (GSAs) employ the concept of Sustainable yield as their primary Management goal. However, SGMA’s current definition of Sustainable yield does not offer clear guidance for new agencies and lacks grounding in physics. This study presents a novel hydrologically based framework for quantifying Sustainable yield under SGMA that is derived from a synthesis of scientific inquiry and analysis. We introduce a flexible three-step approach that basin managers can rely on to quantify Sustainable yield values, incorporate the impact of “undesirable results”, and analyze Groundwater sustainability over SGMA’s implementation horizon. Our framework is illustrated through a case study of the South San Joaquin Irrigation District, a proposed GSA in one of California’s critically overdrafted Groundwater basins. We calculate Sustainable yield for three different Management scenarios and assess the impact of each scenario on future Groundwater sustainability by performing an annual water Groundwater balance through 2040. Our Sustainable yield framework can be used as a basis for the development of SGMA’s Groundwater Management plans throughout California.
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Sustainable Groundwater Management in the arid southwestern us coachella valley california
Water Resources Management, 2015Co-Authors: Brian F Thomas, James S FamigliettiAbstract:Sustainable Groundwater Management requires approaches to assess the influence of climate and Management actions on the evolution of Groundwater systems. Traditional approaches that apply continuity to assess Groundwater sustainability fail to capture the spatial variability of aquifer responses. To address this gap, our study evaluates Groundwater elevation data from the Coachella Valley, California, within a Groundwater sustainability framework given the adoption of integrative Management strategies in the valley. Our study details an innovative approach employing traditional statistical methods to improve understanding of aquifer responses. In this analysis, we evaluate trends at individual Groundwater observation wells and regional Groundwater behaviors using field significance. Regional elevation trends identified no significant trends during periods of intense Groundwater replenishment, active since 1973, despite spatial variability in individual well trends. Our results illustrate the spatially limited effects of Groundwater replenishment occur against a setting of long-term Groundwater depletion, raising concerns over the definition of Sustainable Groundwater Management in aquifer systems employing integrative Management strategies.
