Climate-Smart Agro-Hydrological Model for a Large Scale Rice Irrigation Scheme in Malaysia

Agro-hydrological water management frameworks help to integrate expected planned management and expedite regulation of water allocation for agricultural production. Low production is not only due to the variability of available water during crop growing seasons, but also poor water management decisions. The Tanjung Karang Rice Irrigation Scheme in Malaysia has yet to model agro-hydrological systems for effective water distribution under climate change impacts. A climate-smart agro-hydrological model was developed using Excel-based Visual Basic for Applications (VBA) for adaptive irrigation and wise water resource management towards water security under new climate change realities. Daily climate variables for baseline (1976–2005) and future (2010–2099) periods were extracted from 10 global climate models (GCMs) under three Representative Concentration Pathway scenarios (RCP4.5, RCP6.0, and RCP8.5). The projected available water for supply to the scheme would noticeably decrease during the dry season. The water demand in the scheme will differ greatly during the months in future dry seasons, and the increase in effective rainfall during the wet season will compensate for the high dry season water demand. No irrigation will therefore be needed in the months of May and June. In order to improve water distribution, simulated flows from the model could be incorporated with appropriate cropping patterns.

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Impact of climate change on water availability in Tropical Andean catchments: a case study in the Vilcanota catchment, Peru

10.5194/egusphere-egu21-10292 ◽

2021 ◽

Author(s):

Selina Meier ◽

Randy Munoz ◽

Christian Huggel

Keyword(s):

Climate Change ◽

Water Management ◽

Water Demand ◽

Climate Models ◽

Local Population ◽

Time Step ◽

Glacier Surface ◽

Hydrological Simulation ◽

Sustainable Water Management ◽

Monthly Runoff

Water scarcity is increasingly becoming a problem in many regions of the world. On the one hand, this can be attributed to changes in precipitation conditions due to climate change. On the other hand, this is also due to population growth and changes in consumer behaviour. In this study, an analysis is carried out for the highly glaciated Vilcanota River catchment (9808 km2 &#8211; 1.2% glacier area) in the Cusco region (Peru). Possible climatic and socioeconomic scenarios up to 2050 were developed including the interests from different water sectors, i.e. agriculture, domestic and energy.The analysis consists of the hydrological simulation at a monthly time step from September 2043 to August 2050 using a simple glacio-hydrological model. For historic conditions (1990 to 2006) a combination of gridded data (PISCO precipitation) and weather stations was used. Future scenario simulations were based on three different climate models for both RCP 2.6 and 8.5. Different glacier outlines were used to simulate changes in glacier surface through the time for both historic (from satellite data) and future (from existing literature) scenarios. Furthermore, future water demand simulations were based on the SSP1 and SSP3 scenarios.Results from all scenarios suggest an average monthly runoff of about 130 m3/s for the Vilcanota catchment between 2043 and 2050. This represents a change of about +5% compared to the historical monthly runoff of about 123 m3/s. The reason for the increase in runoff is related to the precipitation data from the selected climate models. However, an average monthly deficit of up to 50 m3/s was estimated between April and November with a peak in September. The seasonal deficit is related to the seasonal change in precipitation, while the water demand seems to have a less important influence.Due to the great uncertainty of the modelling and changes in the socioeconomic situation, the data should be continuously updated. In order to construct a locally sustainable water management system, the modelling needs to be further downscaled to the different subcatchments in the Vilcanota catchment. To address the projected water deficit, a new dam could partially compensate for the decreasing storage capacity of the melting glaciers. However, the construction of the dam could meet resistance from the local population if they cannot be promised and communicated multiple uses of the new dam. Sustainable water management requires the cooperation of all stakeholders and all stakeholders should be able to benefit from it so that they will support future projects.

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Ecosystem Services Demand Management Under Climate Change Scenarios

Advances in Environmental Engineering and Green Technologies - Climate Change and Its Impact on Ecosystem Services and Biodiversity in Arid and Semi-Arid Zones ◽

10.4018/978-1-5225-7387-6.ch003 ◽

2019 ◽

pp. 45-65

Author(s):

Abdelkrim Ben Salem ◽

Souad Ben Salem ◽

Mohammed Khebiza Yacoubi ◽

Mohammed Messouli

Keyword(s):

Climate Change ◽

Ecosystem Services ◽

Water Demand ◽

Water Resource Management ◽

Demand Management ◽

Climate Change Scenarios ◽

Water Ecosystem ◽

Storage Volume ◽

Groundwater Reserves ◽

Water Evaluation And Planning

Water ecosystem service is the most important element that supports Tafilalet agro-ecosystems. In this region, drought frequency is increasing, which complicate the management groundwater reserves. The ephemeral flows of the rivers force people to use groundwater to meet the population demand. Consequently, water resource management is of significant importance the sustainability of this area. Water evaluation and planning (WEAP) is useful management software used to evaluate and trace the trend of water demand. This model was applied in case of Ziz basin in order to simulate and analyze the situation of water under different scenarios. The results show an increasing of demand for water irrigation and with introducing modern irrigation scenario. However, a decreasing trend in reservoir storage volume and groundwater storage was projected in Tafilalet.

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Urban water demand assessment for sustainable water resources management, under climate change and socioeconomic changes

Water Science & Technology Water Supply ◽

10.2166/ws.2019.199 ◽

2019 ◽

Vol 20 (2) ◽

pp. 679-687 ◽

Cited By ~ 2

Author(s):

Angelos Alamanos ◽

Stamatis Sfyris ◽

Chrysostomos Fafoutis ◽

Nikitas Mylopoulos

Keyword(s):

Climate Change ◽

Water Management ◽

Water Resources ◽

Water Conservation ◽

Water Demand ◽

Management Scenarios ◽

Sustainable Water Resources Management ◽

The Future ◽

The Impact ◽

The City

Abstract The relationship between water abstraction and water availability has turned into a major stress factor in the urban exploitation of water resources. The situation is expected to be sharpened in the future due to the intensity of extreme meteorological phenomena, and socio-economic changes affecting water demand. In the city of Volos, Greece, the number of water counters has been tripled during the last four decades. This study attempts to simulate the city's network, supply system and water demand through a forecasting model. The forecast was examined under several situations, based on climate change and socio-economic observations of the city, using meteorological, water pricing, users' income, level of education, family members, floor and residence size variables. The most interesting outputs are: (a) the impact of each variable in the water consumption and (b) water balance under four management scenarios, indicating the future water management conditions of the broader area, including demand and supply management. The results proved that rational water management can lead to remarkable water conservation. The simulation of real scenarios and future situations in the city's water demand and balance, is the innovative element of the study, making it capable of supporting the local water utility.

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Attribution Analysis of Dry Season Runoff in the Lhasa River Using an Extended Hydrological Sensitivity Method and a Hydrological Model

Water ◽

10.3390/w11061187 ◽

2019 ◽

Vol 11 (6) ◽

pp. 1187 ◽

Cited By ~ 2

Author(s):

Zhenhui Wu ◽

Yadong Mei ◽

Junhong Chen ◽

Tiesong Hu ◽

Weihua Xiao

Keyword(s):

Climate Change ◽

Hydrological Model ◽

Anthropogenic Activities ◽

Dry Season ◽

Dominant Factor ◽

Runoff Change ◽

Hydrological Sensitivity ◽

Lhasa River ◽

Sensitivity Method ◽

Impacts Of Climate Change

In this study, a coupled water–energy balance equation at an arbitrary time scale was proposed as an extension of the Budyko hypothesis. The second mixed partial derivative was selected to represent the magnitude of the interaction. The extended hydrological sensitivity method was used to quantitatively evaluate the impacts of climate change, anthropogenic activities, and their interaction on dry season runoff in the Lhasa River. In addition, an ABCD model, which is a monthly hydrological model included a snowmelt module, was used to calculate the change in soil water and groundwater storage. The Mann–Kendall test, Spearman’s test, dynamic linear model (DLM), and Yamamoto’s method were used to identify trends and change points in hydro-climatic variables from 1956–2016. The results found that dry season runoff increased non-significantly over the last 61 years. Climate change, which caused an increase in dry season runoff, was the dominant factor, followed by anthropogenic activities and their interaction, which led to varying degrees of decrease. This study concluded that the methods tested here performed well in quantifying the relative impacts of climate change, anthropogenic activities, and their interaction on dry season runoff change.

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Generalization of parameters in the storage–discharge relation for a low flow based on the hydrological analysis of sensitivity

Proceedings of the International Association of Hydrological Sciences ◽

10.5194/piahs-371-69-2015 ◽

2015 ◽

Vol 371 ◽

pp. 69-73 ◽

Cited By ~ 1

Author(s):

K. Fujimura ◽

Y. Iseri ◽

S. Kanae ◽

M. Murakami

Keyword(s):

Climate Change ◽

Sensitivity Analysis ◽

Water Resource Management ◽

Hydrological Model ◽

Low Flow ◽

Optimum Parameters ◽

Proportional Relationship ◽

Two Parameters ◽

The Impact ◽

Different Climates

Abstract. The storage-discharge relations have been widely used for water resource management and have led to reliable estimation of the impact of climate change on water resources. In a previous study, we carried out a sensitivity analysis of the parameters in a discharge-storage relation in the form of a power function and found that the optimum parameters can be characterized by an exponential function (Fujimura et al., 2014). The aim of this study is to extend the previous study to clarify the properties of the parameters in the storage–discharge relations by carrying out a sensitivity analysis of efficiency using a hydrological model. The study basins are four mountainous basins in Japan with different climates and geologies. The results confirm that the two parameters in the storage–discharge relations can be expressed in an inversely proportional relationship. In addition, we can conveniently assume a practical function for the storage–discharge relations where only one parameter is used on the basis of the new relationship between the two parameters.

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AN EVALUATION OF METEOROLOGICAL DROUGHT IN DAK LAK PROVINCE

Journal of Science Natural Science ◽

10.18173/2354-1059.2021-0060 ◽

2021 ◽

Vol 66 (3) ◽

pp. 195-206

Author(s):

Thuy Hoang Luu Thu ◽

Mui Tran Thi ◽

Vu Vuong Van ◽

Ly Pham Thi ◽

Cuc Pham Thi

Keyword(s):

Climate Change ◽

Rainy Season ◽

Water Resource Management ◽

Global Climate ◽

Meteorological Drought ◽

Dry Season ◽

Practical Significance ◽

Spi Index ◽

K Index ◽

The Impact

Assessment of the degree of meteorological drought in Dak Lak province is carried out using the SPI index and the water balance index K in the period 1985 - 2019. The results show that: According to the SPI index, drought tends to occur more at the time of transition from the dry season to the rainy season, during the rainy season, and from the time of transition from the rainy season to the dry season. The K-index in the period 1985 - 2019 showed there was a dry period at the beginning of the year from January to April. The anomalous drought factor plays a very important role because its large influence can cause damages, and allows assessing the variability of rainfall and the impact of climate change on the region. The study and evaluation of meteorological drought have practical significance, supporting managers in making policies on water resource management, ensuring sustainable economic and social development in the context of global climate change.

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Water Management

Handbook of Research on Future Opportunities for Technology Management Education - Advances in Educational Technologies and Instructional Design ◽

10.4018/978-1-7998-8327-2.ch023 ◽

2021 ◽

pp. 387-400

Author(s):

Rajan Janardhanan

Keyword(s):

Climate Change ◽

Water Management ◽

Resource Management ◽

Water Resources ◽

Water Resource ◽

Water Resource Management ◽

Climate Change Impacts ◽

Water Sources ◽

Global Food Security ◽

The World

The world faces an unprecedented crisis in water resources management, with profound implications for global food security, protection of human health, and maintenance of all ecosystems on Earth. Large uncertainties still plague quantitative assessments of climate change impacts and water resource management, but what is known for certain is that the climate is changing and that it will have an effect on water resources. Therefore, increased efforts will be needed to plan and manage water supplies in the future through increased monitoring and understanding of the interrelationships between population size, climate change, and water availability. The focus of water management is gradually shifting from developing new water sources to using existing water sources more effectively and efficiently. The world needs policy change in water management. Respect for water resources and their value is the starting point of deliberations. Governments have the essential water management function: to protect and allocate water resources to allow both individual and collective interests to benefit from water. Societies must also lead in understanding, provisioning for mitigating the impact of disasters, ranging from extreme droughts to unprecedented floods, caused by climate change and poor management of water and land. Public funds will likely remain the main source of water sectoral funding. It is up to governments to invest wisely to enhance the crucial role that water has for social and economic development in a country. Integrated water resource management strategy is accepted as a global model for achieving the objective of a sustainable water management system.

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Evaluation of Irrigation Water Resources Availability and Climate Change Impacts—A Case Study of Mwea Irrigation Scheme, Kenya

Water ◽

10.3390/w12092330 ◽

2020 ◽

Vol 12 (9) ◽

pp. 2330

Author(s):

George Akoko ◽

Tasuku Kato ◽

Le Hoang Tu

Keyword(s):

Climate Change ◽

Water Management ◽

Water Resources ◽

Irrigation Water ◽

The United States ◽

Climatic Data ◽

Cropping Pattern ◽

Irrigation Scheme ◽

Water Deficits ◽

Water Resources Availability

Rice is an important cereal crop in Kenya, where it is mainly grown in the Mwea Irrigation Scheme, MIS. The serious challenges of MIS include low water use efficiency and limited available water resources. The objective of this study is to analyze the current and future irrigation water resource availability for the improvement of future water management. A Soil Water Assessment Tool (SWAT), a public domain software supported by the United States Department of Agriculture’s Agricultural Research Service in Bushland, TX, USA, was used to estimate the current and future water resources availability from the MIS’s main irrigation water supply sources (River Thiba and River Nyamindi). CropWat, a computer program developed by the Land and Water Division of the Food and Agriculture Organization (FAO), Rome, Italy, was used to estimate irrigation water requirements from 2013–2016 and into the future (2020–2060 and 2061–2099). Future climatic data for total available flow and irrigation requirement estimations were downloaded from three General Circulation Models (GCMs). The data was bias corrected and down-scaled (with observed data) using a Climate Change Toolkit, a toolkit for climate change analysis developed by the Water Weather and Energy Ecosystem, Zurich, Switzerland. The results indicated that the highest irrigation water deficits were experienced in July and August based on the existing cropping pattern. Under a proposed future pattern, estimates show that MIS will experience water deficits mainly from June to October and from January to February. This study recommends that MIS management should put into strong consideration the simulated future estimates in irrigation water availability for the improvement of water management.

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Modeling climate-smart decision support system (CSDSS) for analyzing water demand of a large-scale rice irrigation scheme

Agricultural Water Management ◽

10.1016/j.agwat.2019.01.002 ◽

2019 ◽

Vol 216 ◽

pp. 138-152 ◽

Cited By ~ 9

Author(s):

M.K. Rowshon ◽

N.S. Dlamini ◽

M.A. Mojid ◽

M.N.M. Adib ◽

M.S.M. Amin ◽

...

Keyword(s):

Decision Support ◽

Decision Support System ◽

Support System ◽

Water Demand ◽

Large Scale ◽

Irrigation Scheme ◽

Rice Irrigation

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Management of Water Resources in Agriculture in Chile and its Challenges

10.7764/ijanr.v48i3.2328 ◽

2021 ◽

Vol 48 (3) ◽

pp. 171-185

Author(s):

Guillermo Donoso ◽

Keyword(s):

Climate Change ◽

Water Management ◽

Water Resource Management ◽

Agricultural Development ◽

Agricultural Sector ◽

Agricultural Water ◽

Agricultural Water Management ◽

Northern Regions ◽

Management Policies ◽

Key Aspects

Water is a strategic resource for agricultural development, particularly in the arid and semiarid regions of central and northern Chile. Currently, irrigated surfaces contribute between 60 and 65% of the country’s agricultural GDP. Associated with Chile’s economic growth, total consumptive water use has increased, which, together with population growth, urbanization, water contamination and pollution, has led to important water stress situations that are triggering a greater number of conflicts and social, economic, and environmental vulnerability. The above phenomena will be exacerbated by climate change. At present, surface water deficit covering irrigation demands exists in the central and northern regions. This deficit is projected to increase as a result of climate change, which would increase the challenges for satisfying agricultural water requirements. The objective of this article is to integrally review the key aspects of Chilean water and agricultural water management policies, considering their interphases, providing the reader with a general overview of the main features of this model, an evaluation of its effectiveness and the main challenges agricultural water management faces. Resolving the challenges of the future requires a thorough reconsideration of water management policies and institutions and how water is managed in the agricultural sector in the broader context of overall water resource management in Chile.

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