Conjunctive Management Through Collective Action

Holley, Cameron; Sinclair, Darren; López-Gunn, Elena; Schlager, Edella

doi:10.1007/978-3-319-23576-9_9

Cited by 8 publications

(13 citation statements)

References 14 publications

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“…Out of the four separate drought management strategies conjunctive use is most effective in easing pressure on water resources resulting in reduced hydrological droughts, increased baseflow and groundwater storage, particularly in the low groundwater storage system. Scenarios show the potential of integrating both water resources, as management strategy resulting in increased drought resilience (Scanlon et al, 2016;Noorduijn et al, 2019;Holley et al, 2016). However, conjunctive use does not create water, but optimises storage use, particularly in catchments with large reservoir storage (Bredehoeft, 2011).…”

Section: Impact Of Drought Management Strategies On Hydrological Droughtsmentioning

confidence: 99%

“…Optimising the timing of surface water and groundwater use seems key for a successful conjunctive system, although the required flexibility might have practical limitations for water managers (Bredehoeft, 2011). For example, water use licences are often set to a specific water source and re-allocation of water licences can be difficult, which limits implementation of conjunctive use (Holley et al, 2016). However, a degree of flexibility can be achieved when water management units are large enough to contain multiple source-specific licences (Shepley et al, 2009;Fowler et al, 2007;Thorne et al, 2003).…”

Section: Impact Of Drought Management Strategies On Hydrological Droughtsmentioning

confidence: 99%

“…For example, the static water demand could be substituted by a dynamic water demand component or increased awareness of water stress (Garcia et al, 2016), if this would be supported by water resource or drought management plans. Conjunctive use scenarios could also benefit from additional information regarding general water management practices, as practical constrains to flexible water storage can limit the effectiveness of conjunctive use (Holley et al, 2016).…”

Section: Model Limitationsmentioning

confidence: 99%

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Demonstrating the impact of integrated drought policies on hydrological droughts

Wendt¹,

Bloomfield²,

Loon³

et al. 2021

Preprint

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Abstract. Managing water-human systems in times of water shortage and droughts is key to avoid overexploitation of water resources, particularly for groundwater, which is a crucial water resource during droughts sustaining both environmental and anthropogenic water demand. Drought management is often guided by drought policies to avoid crisis management and to actively introduce management strategies during droughts. However, the impact of drought management strategies on hydrological droughts is rarely assessed. In this study, we present a newly developed socio-hydrological model, simulating feedbacks between water availability and managed water use over three decades. Thereby, we aim to assess the impact of drought policies on both surface water and groundwater droughts. We tested this model in an idealised catchment based on climate data, water resource management practices, and drought policies in England. The model includes surface water storage (reservoir), groundwater storage for a range of hydrogeological conditions and optional imported surface water or groundwater. These modelled water sources can all be used to satisfy anthropogenic and environmental water demand. We tested four aspects of drought management strategies: 1) increased water supply, 2) restricted water demand, 3) conjunctive water use, and 4) maintained environmental flow requirements by restricting groundwater abstractions. These four strategies were evaluated in separate and combined scenarios. Results show mitigated droughts for both streamflow and groundwater droughts in scenarios applying conjunctive use, particularly in low groundwater storage systems. In high groundwater storage systems, maintaining environmental flows reduces hydrological droughts most. Scenarios increasing or restricting water demand have an opposing effect on droughts, although these scenarios are in balance when combined at the same time. Most combined scenarios reduce the severity and occurrence of hydrological droughts given an incremental dependency on imported water that satisfies up to a third of the total anthropogenic water demand. The necessity for importing water shows the considerable pressure on water resources and the delicate balance of water-human systems during droughts that calls for short-term and long-term sustainability targets within drought policies.

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Section: Impact Of Drought Management Strategies On Hydrological Droughtsmentioning

confidence: 99%

Section: Impact Of Drought Management Strategies On Hydrological Droughtsmentioning

confidence: 99%

Section: Model Limitationsmentioning

confidence: 99%

See 1 more Smart Citation

Demonstrating the impact of integrated drought policies on hydrological droughts

Wendt¹,

Bloomfield²,

Loon³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Faced with this situation, the objectives of the authorities were to try improve the status of the groundwater body, to improve the environmental flows of the Jucar River, to ensure water demands to the downstream users and to balance and harmonize regional and sectoral development. In these sense, the CHJ decided to reduce groundwater extraction in the MOA to increase aquifer contributions to the river flow, reach environmental river flow requirements and prevent drying of the river, which had occurred in a previous drought (1994)(1995)(1996) (Holley et al, 2016). The Spanish Water Law (Article 71 TRLA) enables water authorities to temporarily buy water rights from licensed water users by financially compensating users according to the estimated average missed profit, which is called a Public Offer for the Acquisition of Water Rights.…”

Section: Public Offer For the Acquisition Of Water Rightsmentioning

confidence: 99%

The social construction and consequences of groundwater modelling: insight from the Mancha Oriental aquifer, Spain

Sanz

Vos

Rambags

et al. 2018

International Journal of Water Resources Development

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Vos, J.; Rambags, F.; Hoogesteger, J.; Cassiraga, EF.; Gómez-Alday, JJ. (2018). The social construction and consequences of groundwater modelling: insight from the Mancha Oriental aquifer, Spain. International Journal of Water Resources Abstract Groundwater flow models have been increasingly used to support policy making.A substantial amount of research has been dedicated to improving, validating and calibrating models and including stakeholders in the modelling process. However, little research has been done to analyse how choices of model makers and steering by policy makers result in models with specific characteristics, which only allow for specific modelling outcomes, and how the use of these modelling outcomes leads to specific social, economic and environmental consequences. In this study, we use the social construction of technology (SCOT) framework to explore the development, characteristics and uses of the groundwater model of the Mancha Oriental aquifer in Spain. The specific characteristics and functioning of this model influenced the policy implementation, implying that involving stakeholders in the development and use of models is crucial for improved democratic policy making.

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“…However, few of these drought policies are assessed in terms of their effectiveness (Urquijo et al, 2017;Wilhite et al, 2014). In Europe, drought polices or drought management plans are evaluated as part of the Water Framework Directive (WFD; EU Directive, 2000), and member states are encouraged to move from crisis management towards proactive management of droughts (Howarth, 2018). However, implemented drought policies vary (De Stefano et al, 2015;Urquijo et al, 2017), and currently, there is no consistent methodology to assess drought policies with respect to their impact on water resources or hydrological droughts.…”

Section: Introductionmentioning

confidence: 99%

Evaluating integrated water management strategies to inform hydrological drought mitigation

Wendt

Bloomfield

Loon

et al. 2021

Nat. Hazards Earth Syst. Sci.

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Abstract. Managing water–human systems during water shortages or droughts is key to avoid the overexploitation of water resources and, in particular, groundwater. Groundwater is a crucial water resource during droughts as it sustains both environmental and anthropogenic water demand. Drought management is often guided by drought policies, to avoid crisis management, and actively introduced management strategies. However, the impact of drought management strategies on hydrological droughts is rarely assessed. In this study, we present a newly developed socio-hydrological model, simulating the relation between water availability and managed water use over 3 decades. Thereby, we aim to assess the impact of drought policies on both baseflow and groundwater droughts. We tested this model in an idealised virtual catchment based on climate data, water resource management practices and drought policies in England. The model includes surface water storage (reservoir), groundwater storage for a range of hydrogeological conditions and optional imported surface water or groundwater. These modelled water sources can all be used to satisfy anthropogenic and environmental water demand. We tested the following four aspects of drought management strategies: (1) increased water supply, (2) restricted water demand, (3) conjunctive water use and (4) maintained environmental flow requirements by restricting groundwater abstractions. These four strategies were evaluated in separate and combined scenarios. Results show mitigated droughts for both baseflow and groundwater droughts in scenarios applying conjunctive use, particularly in systems with small groundwater storage. In systems with large groundwater storage, maintaining environmental flows reduces hydrological droughts most. Scenarios increasing water supply or restricting water demand have an opposing effect on hydrological droughts, although these scenarios are in balance when combined at the same time. Most combined scenarios reduce the severity and occurrence of hydrological droughts, given an incremental dependency on imported water that satisfies up to a third of the total anthropogenic water demand. The necessity for importing water shows the considerable pressure on water resources, and the delicate balance of water–human systems during droughts calls for short-term and long-term sustainability targets within drought policies.

show abstract

Conjunctive Management Through Collective Action

Cited by 8 publications

References 14 publications

Demonstrating the impact of integrated drought policies on hydrological droughts

Demonstrating the impact of integrated drought policies on hydrological droughts

The social construction and consequences of groundwater modelling: insight from the Mancha Oriental aquifer, Spain

Evaluating integrated water management strategies to inform hydrological drought mitigation

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