scholarly journals THE POTENTIAL IMPACT OF CLIMATE CHANGE IN ONTARIO’S GRAND RIVER BASIN: WATER SUPPLY AND DEMAND ISSUES

1999 ◽  
Vol 24 (4) ◽  
pp. 307-330 ◽  
Author(s):  
Charles F. Southam ◽  
Ralph J. Moulton ◽  
Douglas W. Brown ◽  
Brian N. Mills
Keyword(s):  
Climate Change ◽  
Water Supply ◽  
River Basin ◽  
Supply And Demand ◽  
Impact Of Climate Change ◽  
Basin Water ◽  
Potential Impact ◽  
Water Supply And Demand ◽  
Grand River

scholarly journals The optimal allocation of water resources oriented to prioritizing ecological needs using multiple schemes in the Shaying River Basin (Henan Section), China

2021 ◽  
Author(s):  
Hang Li ◽  
Xiao-Ning Qu ◽  
Jie Tao ◽  
Chang-Hong Hu ◽  
Qi-Ting Zuo
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
River Basin ◽  
Water Conservation ◽  
Water Demand ◽  
Optimal Allocation ◽  
Supply And Demand ◽  
Allocation Model ◽  
Water Supply And Demand ◽  
Ecological Objectives

Abstract China is actively exploring water resources management considering ecological priorities. The Shaying River Basin (Henan Section) serves as an important grain production base in China. However, conflicts for water between humans and the environment are becoming increasingly prominent. The present study analyzed the optimal allocation of water while considering ecological priorities in the Shaying River Basin (Henan Section). The ecological water demand was calculated by the Tennant and the representative station methods; then, based on the predicted water supply and demand in 2030, an optimal allocation model was established, giving priority to meeting ecological objectives while including social and comprehensive economic benefit objectives. After solving the model, the optimal results of three established schemes were obtained. This revealed that scheme 1 and scheme 2 failed to satisfy the water demand of the study area in 2030 by only the current conditions and strengthening water conservation, respectively. Scheme 3 was the best scheme, which could balance the water supply and demand by adding new water supply based on strengthening water conservation and maximizing the benefits. Therefore, the actual water allocation in 2030 is forecast to be 7.514 billion (7.514 × 109) m3. This study could help basin water management departments deal with water use and supply.

scholarly journals Study on water resources optimal regulation of inter-basin water transfer project

2018 ◽  
Vol 246 ◽  
pp. 01006
Author(s):  
Jigang Ma ◽  
Haofang Wang ◽  
Libin Zhao ◽  
Song Wei
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Supply And Demand ◽  
Water Shortage ◽  
Water Transfer ◽  
Total Water ◽  
Optimal Regulation ◽  
Basin Water ◽  
Water Supply And Demand ◽  
Regulation Model

Water resources optimal regulation is an important means to mitigate the shortage of water resources and promote social and economic sustainable development in regions or watershed. With the rapid development of urban population and industrial and agricultural production in recent years, the shortage of water is becoming more and more serious in Jiaodong area. The four regions with serious water shortage including Weifang, Qingdao, Yantai and Weihai in Jiaodong area are the typical research areas. In combination with the water transfer project of Yellow river to Qingdao and the south-to-north water transfer project, the water diversion is carried out to alleviate the contradiction between water supply and demand of Jiaodong area. The year of 2014 deemed as the base year and the years of 2020 and 2025 are the planning years. Based on the supply and demand analysis of water resources, an optimal regulation model is built with the minimum total water shortage considering the constraints of water supply capacity of project, water distribution capacity and minimum water supply of bleeds and so on. The optimal regulation schemes are obtained by solution model using MATLAB programming. The results show that water shortage rate of the four cities decreases significantly in annual regulation. For different planning years, guarantee rate of 50%, 75% and 95%,the total water shortage rate will be reduced by 15.35%、15.75% and 16.85% respectively in 2020, and in 2025the total water shortage rate will be reduced by 13.27%、13.26% and 14.19% respectively. Therefore the water resources optimal regulation of inter-basin water transfer project can effectively mitigate water scarcity and the contradiction between water supply and demand in Jiaodong area.

scholarly journals Climate change and population growth impacts on surface water supply and demand of Addis Ababa, Ethiopia

2017 ◽  
Vol 18 ◽  
pp. 21-33 ◽  
Author(s):  
Bisrat Kifle Arsiso ◽  
Gizaw Mengistu Tsidu ◽  
Gerrit Hendrik Stoffberg ◽  
Tsegaye Tadesse
Keyword(s):  
Climate Change ◽  
Surface Water ◽  
Population Growth ◽  
Water Supply ◽  
Addis Ababa ◽  
Supply And Demand ◽  
Water Supply And Demand ◽  
Surface Water Supply
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