Development of an irrigation vulnerability assessment model in agricultural reservoirs utilizing probability theory and reliability analysis

Nam, Won‐Ho; Choi, Jin‐Yong

doi:10.1016/j.agwat.2014.05.009

Cited by 43 publications

(27 citation statements)

References 22 publications

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“…Although some empirical studies have performed the vulnerability analysis to assess the effect of climate change on water resources (Kim et al, 2009;Lee and Kim, 2013;Nam et al, 2015b), the indicators used in the previous works may not adequately reflect the impacts of drought, especially at the local level, and may not be relevant across multiple regions and sectors. Faced with these challenges, water resources decision makers in South Korea need explicit information to help develop preparedness plans and establish policies that are aimed at reducing the impacts of drought under a changing climate (Nam and Choi, 2014). Research on the temporal and spatial characteristics of drought is necessary to evaluate the potential impacts of drought and to carry out rational management of water resources.…”

Section: Introductionmentioning

confidence: 99%

Drought hazard assessment in the context of climate change for South Korea

Nam

Hayes

Svoboda

et al. 2015

Agricultural Water Management

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239

117

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Section: Introductionmentioning

confidence: 99%

Drought hazard assessment in the context of climate change for South Korea

Nam

Hayes

Svoboda

et al. 2015

Agricultural Water Management

Self Cite

239

117

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“…Rather than being based on scientific principles, reservoir operation has primarily been based on past experience, which may only apply to the small, localized regions. Therefore, optimal water management plans and scenarios based on monitoring and modelling are necessary (Riesgo and Gomez-Limon, 2006;Pereira et al, 2007;Nam et al, 2013;Pawde et al, 2013;Hong et al, 2014;Nam and Choi, 2014).…”

Section: Introductionmentioning

confidence: 99%

Decision Support System for the Real‐Time Operation and Management of an Agricultural Water Supply

Hong

Choi

Nam

et al. 2015

Irrigation and Drainage

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Agricultural uses are responsible for approximately 48% of the total annual water use in South Korea. While approximately 70% of the annual rainfall is received during the summer season, most of the agricultural water is utilized from May to June. Therefore, irrigation facilities including reservoirs, canals and pumps were installed to efficiently manage agricultural water. Efficient operation of irrigation systems is important for sustainable irrigated agriculture, which is undermined due to the low water efficiency of the irrigation systems. Irrigation water management using web-based decision support systems is necessary to resolve water efficiency problems. In this study, automatic water gauges were installed at the main and secondary irrigation canals in the Dongjin River Basin, South Korea. The water levels in each canal were monitored and the irrigation water supply calculated. An irrigation model considering intermittent irrigation was developed to compare the estimated irrigation demands with the actual supplies for decision-making and demand strategies. Using this model and water-level data, a risk-based decision support system for the operation and management of agricultural water was developed and evaluated. Using this system. it is possible to optimally manage irrigation water and to make plans for efficient agricultural water operation and management. Copyright © 2015 John Wiley & Sons, Ltd. RÉSUMÉLes usages agricoles représentent environ 48% de la consommation annuelle totale d'eau en Corée du Sud. Alors que près de 70% des précipitations annuelles sont reçues pendant la saison estivale, la plupart des eaux agricoles sont utilisées à partir de mai-juin. Par conséquent les systèmes d'irrigation, réservoirs, canaux, pompes, etc. ont été installés afin de gérer efficacement l'eau agricole. Le fonctionnement efficace d'un système d'irrigation est important pour l'agriculture irriguée durable. Un système d'aide à la décision basé sur le Web peut résoudre le problème de l'efficacité de l'eau. Dans cette étude, située dans le bassin de la rivière Dongjin (Corée du Sud) nous avons installé des débitmètres automatiques dans les canaux principaux et secondaires. Cette surveillance a permis de calculer depuis 2012 les besoins quotidiens, hebdomadaires, mensuels et annuels en eau d'irrigation. Un modèle d'irrigation considérant le caractère intermittent de l'irrigation a été développé pour affiner la prise de décision et la stratégie et comparer les besoins d'irrigation estimés aux approvisionnements réels. Enfin, en utilisant ce modèle et les mesures hydrométriques en temps réel, un système d'aide à la décision fondée sur les risques de l'exploitation et la gestion de l'approvisionnement en eau pour l'agriculture a été mis au point et évalué. Les résultats de l'étude suggèrent qu'il est possible de gérer au mieux l'eau d'irrigation et de faire un plan pour une gestion efficace de l'exploitation de l'eau agricole, en utilisant un système d'aide à la décision.

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“…Keywords: Climate change; resilience index; vulnerability of irrigation system, Brantas watershed PENDAHULUAN Perubahan iklim yang diindikasikan peningkatan variabilitas iklim dari waktu ke waktu akan berpengaruh terhadap kerentanan sumber daya air. Ketersediaan air akan berkurang, sedangkan di sisi kebutuhan mengalami peningkatan sehingga keandalan menurun (Moradi dkk., 2007;Jain dan Bhunya, 2008;Nam dan Choi, 2014). Pada sektor pertanian, kondisi ini mengakibatkan terjadinya penurunan produktivitas (Peng dkk., 2004;Las, 2008;Surmaini dkk., 2008;Surmaini dkk., 2011;Syafputri, 2014).…”

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Analisis Kerentanan Sistem Irigasi Akibat Perubahan Iklim Dengan Tolok Ukur Indeks Kelentingan Di Empat Daerah Irigasi Wilayah Daerah Aliran Sungai Brantas

2019

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Climate change which mainly affected by the increase of climate variability from time to time is highly impacted to the vulnerability of irrigation system, in a way that by the increase of water demand can not be fulfilled by water availability (the decrease of capacity). While, basic measure of conducting irrigation system management currently is solely based on comparison value between demand and irrigation water availability (K-factor) without considering the increase of climate variability. Resilience Index (Ik) as one of basic measures in water resource management can be used as a limitation in irrigation system operational management. The results of the study show that Molek, Jatikulon, Menturus and Konto irrigation areas (DI) are impacted by climate change with different scales of resilience. The resilience index of 100% for Molek Irrigation area, 80% for Jatikulon irrigation area, 50% for Menturus irrigation area, and 33% for Konto irrigation area. Climate change is predicted causing the decrease of harvested area, in such a way that in the condition of El Niño around 48% in Konto Irrigation Area, 34% in the Menturus Irrigation Area, 28% at the Jatikulon Irrigation Area, and 15% in the Molek Irrigation areas. Nevertheless, in the La-Nina condition, there was no the increase of harvested area in the entire of irrigation area studied, even, there was a decreased of harvested area of 28% in Konto irrigation area, and 6% in Menturus irrigation area. The most powerful threat toward irrigation system sustainability is the environment, followed by physical, social, and economic aspects respectively. The results of this study implicate to the imprevement of irrigation management policy, namely to the operational pattern of irrigation system, which use resilience index (Ik) as basic measure of irrigation system management out of the K-factor.

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Development of an irrigation vulnerability assessment model in agricultural reservoirs utilizing probability theory and reliability analysis

Cited by 43 publications

References 22 publications

Drought hazard assessment in the context of climate change for South Korea

Drought hazard assessment in the context of climate change for South Korea

Decision Support System for the Real‐Time Operation and Management of an Agricultural Water Supply

Analisis Kerentanan Sistem Irigasi Akibat Perubahan Iklim Dengan Tolok Ukur Indeks Kelentingan Di Empat Daerah Irigasi Wilayah Daerah Aliran Sungai Brantas

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