Future of Water Supply and Demand in the Middle Drâa Valley, Morocco, under Climate and Land Use Change

Johannsen, Irene M.; Hengst, Jennifer C.; Goll, Alexander; Höllermann, Britta; Diekkrüger, Bernd

doi:10.3390/w8080313

Cited by 57 publications

(61 citation statements)

References 20 publications

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“…After establishing water supply and demand nodes and a corresponding connecting relationship, the optimal flow configuration result for each step is obtained by solving the linear programming under prioritization, supply preference, quality balance, and other constraints (Sieber and Purkey ). The WEAP model has been successfully used worldwide, including in California, western Iran, Benin, Morocco, and many cities in China (Höllermann et al ; Rochdane et al ; Li et al ; Safavi et al ; Johannsen et al ; Gao et al ; Jamshid Mousavi et al ) and as such adopted for this study.…”

Section: Methodsmentioning

confidence: 99%

Available Water Supplies in Beijing, China, Under Single‐ and Multi‐Year Drought

Chang

Zhao

Wang

et al. 2020

J American Water Resour Assoc

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Research Impact Statement: Importance of the MR-SNWDP (middle route of the South-to-North Water Diversion Project) for ensuring available water supplies in Beijing.ABSTRACT: Since its implementation in 2015, the Middle Route of the South-to-North Water Diversion Project (MR-SNWDP) has transferred an average of 45 billion cubic meters of surface water per year from the Yangtze River in southern China to the Yellow River and Hai River Basin in northern China, but how that supply is able to cope with droughts under different scenarios has not been explored. In this study, using the water demand for 2020 as the guaranteed water target, a Water Evaluation and Planning system was used to simulate available water supplies in Beijing under different drought scenarios. In the case of a single-year drought, without the MR-SNWDP, Beijing's water shortage ratio was 16.7%; with the MR-SNWDP, this ratio reduced to 7.3%. In the case of a multi-year drought, without the MR-SNWDP, Beijing's water shortage ratio was 25.3%; with the MR-SNWDP, this ratio reduced to 7.4% and domestic water supply was improved. Our research suggests that to prepare for multi-year drought in the Beijing area, the SNWDP supports increased supplies to the region that would mitigate drought effects. This study is, however, mostly focused on water supply provision to Beijing and does not comprehensively evaluate other potential impacts. Multiple additional avenues could be pursued that include replenishing groundwater, increasing reservoir storage, and water conservation methods. Further research is needed to explore the relative costs and benefits of these approaches.

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Section: Methodsmentioning

confidence: 99%

Available Water Supplies in Beijing, China, Under Single‐ and Multi‐Year Drought

Chang

Zhao

Wang

et al. 2020

J American Water Resour Assoc

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“…Moreover, WEAP integrates a range of physical hydrologic processes with the management of demands and development infrastructure in a seamless and coherent manner. Hence, it can suitably serve as a decision support system for IWRM and policy analysis through simulations of catchment runoff, water demand and supply, ecosystem services, groundwater and surface storage, reservoir operations, and flow requirements by means of scenarios of changing climate, policy, land use and socio-economic development [6,34,35].…”

Section: Weap21 Model For the Upper Awash Basinmentioning

confidence: 99%

“…Rapid population growth, changing living standards and consumption patterns, and rapid expansion of irrigated agriculture are among the major driving forces for the increased demand for water [4][5][6]. The continued pressure on water resources leads to undesirable consequences such as imbalances between demand and availability, water quality degradation, competition between sectors, and even regional and international conflicts [7,8].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Impacts of IWRM Policy Actions on Demand Satisfaction and Downstream Water Availability in the Upper Awash Basin, Ethiopia

Mersha

Masih

Fraiture

et al. 2018

Water

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Abstract:Water scarcity problems are becoming increasingly common due to higher water demand, urbanization, economic development and climatic variability. Policies and measures based on Integrated Water Resources Management (IWRM) are often advocated to tackle the problems of competing demands and conflicts among stakeholders. Demand management measures as part of the IWRM package are expected to offset the increased demands on water resources caused by economic growth. However, even if IWRM-based policies are in place, the potential impacts of demand management are seldom quantified while formulating water policies or development plans. To address this, we conducted scenario analysis using Water Evaluation and Planning System (WEAP21) in a case study from the Awash Basin in Ethiopia. We show that ambitious irrigation expansion plans to combat food insecurity will lead to overexploitation of water resources with increasing inequity between smallholders and commercial farmers. Demand management measures proposed by water users are insufficient to offset these consequences. Potential demand measures that are embedded in the IWRM-based policies alone are also insufficient. While water policies emphasize IWRM principles but do not indicate how to properly implement them, economic development plans are often launched without adequately considering equity and environment, two of the three pillars of IWRM. This scenario analysis shows the importance of quantitative information in IWRM formulation and monitoring.

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“…For these reasons, it is important to estimate quantitatively the anticipated effects of climate change on irrigation water requirements [5]. Previous work has reported significant changes in precipitation and temperature that may be associated with impacts to irrigation water demand in the past, present, and future on global and regional scales [6][7][8][9][10][11]. To ensure sustainability, irrigation vulnerability assessment and adaptation strategies based on estimates of changing irrigation demand are necessary.…”

Section: Introductionmentioning

confidence: 99%

Regional Climate Change Impacts on Irrigation Vulnerable Season Shifts in Agricultural Water Availability for South Korea

Nam

Kim

Hong

et al. 2017

Water

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Abstract:Reservoirs are principal water resources that supply irrigation water to paddy fields and play an important role in water resources management in South Korea. For optimal irrigation reservoir operation and management, it is necessary to determine the duration of irrigation water shortages. Management of reservoir operation and irrigation scheduling should take into consideration essential variables that include the water supply in a reservoir and the water demand in the associated irrigation district. The agricultural water supply and demand show different patterns based on the variability and uncertainty of meteorological and hydrological phenomena. The duration of excessive water supply can be quantitatively determined through analysis of deviations and changes in the timing of agricultural water supply and demand. In this study, we introduce an approach to assess the vulnerable seasons of paddy irrigation to enable more effective operation and management of reservoirs. The vulnerable seasons were evaluated through comparison of the potential water supply capacity and irrigation water requirements based on water budget analysis via a time series change analysis. We have assessed the changing in the total duration and duration shifts of the vulnerable irrigation seasons for four agricultural reservoirs using past observed data from meteorological stations maintained by the Korea Meteorological Administration (KMA) and projected climate change scenarios (2011-2100) as depicted by the Representative Concentration Pathways (RCPs) emission scenarios. For irrigation vulnerable seasons under both the RCP 4.5 and RCP 8.5 scenarios, the results showed periods of significant increases in which total vulnerable seasons compared to the historical period; the longest duration of vulnerability occurred during the 2071-2100 period under the RCP 8.5. Identification of the vulnerable seasons for paddy irrigation can be applied in agricultural water management to more effectively manage reservoir operation during irrigation periods with climate changes.

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Future of Water Supply and Demand in the Middle Drâa Valley, Morocco, under Climate and Land Use Change

Cited by 57 publications

References 20 publications

Available Water Supplies in Beijing, China, Under Single‐ and Multi‐Year Drought

Available Water Supplies in Beijing, China, Under Single‐ and Multi‐Year Drought

Evaluating the Impacts of IWRM Policy Actions on Demand Satisfaction and Downstream Water Availability in the Upper Awash Basin, Ethiopia

Regional Climate Change Impacts on Irrigation Vulnerable Season Shifts in Agricultural Water Availability for South Korea

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