scholarly journals Evaluation and Improvement of Water Supply Capacity in the Region

2018 ◽  
Vol 8 (4) ◽  
pp. 113
Author(s):  
Qiao-Xu Qin ◽  
Yuan-Biao Zhang
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Evaluation Model ◽  
Prediction Method ◽  
Water Shortage ◽  
Grey Prediction ◽  
Beijing Area ◽  
Intervention Plan ◽  
Supply Capacity ◽  
The Impact

Aiming at the problem of water shortage in the world, we set up an index to measure the supply capacity of regional water resources, and chose six regions to verify the accuracy of the index. Then we chose the Beijing area to analyze the causes of water shortage combined with the actual situation. After that, we predicted the water supply situation in Beijing area in the next 15 years and explained the impact of future water resources on the residents’ life by using the grey prediction method. Then the intervention plan is put forward, and the influence of the intervention plan is added to the evaluation model, and then the water supply capacity of the prognosis is predicted again. The quality of the intervention plan is evaluated, and suggestions for future water resources supply are put forward.

scholarly journals NATURAL RESOURCES AND SUSTAINABLE DEVELOPMENT IN A MOUNTAIN ECONOMY

10.26458/1845 ◽  
2018 ◽  
Vol 18 (4) ◽  
pp. 75-93
Author(s):  
Viorica Jelev
Keyword(s):  
Water Resources ◽  
Climate Changes ◽  
Agricultural Practices ◽  
Water Shortage ◽  
Economic Activities ◽  
Research Activity ◽  
Mountain Areas ◽  
Mountain Area ◽  
Sustainable Solutions ◽  
The Impact

 This paper presents the existing situation at national and world level considering the available water resources, their vulnerability especially in the mountains areas, the impact of climate changes, the possible conflicts regarding the intensification of water shortage in some regions of the world. I also present a case study on forests in Romania. Beginning with the general data mentioned above, we point out the specific peculiarities of the mountain area hydrology for identifying some aspects which are specific to the mountain water relationship. The analysis is necessary as no specifications regarding the mountain hilly or plain areas are done in the activity regarding waters management. Waters are managed unitary on river basins considering some general principles, unanimously recognized, well reflected into the national and international regulations. As a first stage, traditional economic activities are identified in the relationship of the mountain areas inhabitants with water but also some present approaches. The way the mountain areas inhabitants knew how to live together and capitalize water resources represents a model and impulse for coming back to such sustainable solutions but capitalizing the advantages of modern technologies. Each of these activities referring to waters which take place in the mountains area can represent ways for the research activity and future thorough studies from the technical, economic, social, cultural-traditional point of view and also for environment protection. A main preoccupation might have connection with the evolution of agricultural activities in the mountains area considering the climate changes and a possible “migration” towards higher areas of some agricultural practices specific to lower areas. The paper also shows a small example of the regaining by the locals of a community of an important resource for their lives in the hands of corporations: the forests defaced by HOLZINDUSTRIE SCHWEIGHOFER and stop flooding villages. 

scholarly journals Modeling in Water Resources Management in East Nile Delta: Review

2020 ◽  
Vol 17 (2) ◽  
pp. 41-46
Author(s):  
Heba F. Abdelwahab ◽  
Elsayed M. Ramadan ◽  
Abdelazim M. Negm
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Water Reuse ◽  
Geographical Information Systems ◽  
Nile Delta ◽  
Mathematical Optimization ◽  
Water Shortage ◽  
Optimal Operation ◽  
Geographical Information ◽  
Modelling Studies

AbstractIt is acknowledged that providing a safe water supply for all countries is one of the major challenges of the twenty-first century. Egypt is one of the greatest countries affected in Africa and Middle East. The Nile is facing a major water shortage due to the limited water resources and the the demand is growing as a result high population growth and development in industrial and agricultural sectors. This paper has been motivated by the fact that there is no up-to-date literature review of the optimal operation of Water Resources. The analysis of the reviewed literature is structured along five broad branches: (1) Mathematical Optimization Modelling Studies, (2) Numerical Simulation Modelling Studies, (3) Geographical Information Systems “GIS” based Studies, (4) Ecological Studies, (5) Water Reuse Studies. This review is limited to surface water but groundwater has been inexplicitly included. The paper concludes the best way to identify knowledge to cover the gap between water supply and demands and to guide future researches on water resources planning and management.

scholarly journals Study on Production, Domestic and Ecological Benefits of Reservoir Water Supply Based on Emergy Analysis

Processes ◽  
2020 ◽  
Vol 8 (11) ◽  
pp. 1435
Author(s):  
Xinjian Guan ◽  
Pengkun Jiang ◽  
Yu Meng ◽  
Haidong Qin ◽  
Hong Lv
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Evaluation Model ◽  
Emergy Analysis ◽  
Reservoir Water ◽  
Water Users ◽  
Ecological Benefit ◽  
Analysis Theory ◽  
Regulation Function ◽  
Current Water

As an important water conservancy project, it is necessary to evaluate its water supply benefit. Based on the emergy analysis theory, a reservoir water supply benefits evaluation model (RWSBEM) was established. Firstly, the emergy transformity of natural and engineering water body was calculated. Secondly, the water resource values (WRV) of different water users (industrial, agricultural, domestic, ecological) were calculated. Finally, combined with the water supply situation of the reservoir, the various water supply benefits of the reservoir were calculated. Taking Hekoucun reservoir as an example, its ecological water supply benefit is the largest and agriculture is the smallest, followed by industry and life. The results showed that the trend of WRV was domestic > industry > ecology > agriculture, which reflected the contribution and utility of water resources in different industries. Under the condition of current water resources, the planned water supply benefits of the reservoir can be guaranteed in the wet and normal years, but in the dry years, the ecological benefit will be reduced. Therefore, the industry water-saving needs to be further strengthened, and the interannual regulation function of the reservoir should be applied more effectively to maximize the comprehensive benefits of reservoir water supply.

scholarly journals Severe Drought in Finland: Modeling Effects on Water Resources and Assessing Climate Change Impacts

2019 ◽  
Vol 11 (8) ◽  
pp. 2450 ◽  
Author(s):  
Noora Veijalainen ◽  
Lauri Ahopelto ◽  
Mika Marttunen ◽  
Jaakko Jääskeläinen ◽  
Ritva Britschgi ◽  
...  
Keyword(s):  
Climate Change ◽  
Water Resources ◽  
Water Supply ◽  
Impact Analysis ◽  
Climate Change Impacts ◽  
Water Levels ◽  
Severe Drought ◽  
Climate Change Scenarios ◽  
Economic Sectors ◽  
The Impact

Severe droughts cause substantial damage to different socio-economic sectors, and even Finland, which has abundant water resources, is not immune to their impacts. To assess the implications of a severe drought in Finland, we carried out a national scale drought impact analysis. Firstly, we simulated water levels and discharges during the severe drought of 1939–1942 (the reference drought) in present-day Finland with a hydrological model. Secondly, we estimated how climate change would alter droughts. Thirdly, we assessed the impact of drought on key water use sectors, with a focus on hydropower and water supply. The results indicate that the long-lasting reference drought caused the discharges to decrease at most by 80% compared to the average annual minimum discharges. The water levels generally fell to the lowest levels in the largest lakes in Central and South-Eastern Finland. Climate change scenarios project on average a small decrease in the lowest water levels during droughts. Severe drought would have a significant impact on water-related sectors, reducing water supply and hydropower production. In this way drought is a risk multiplier for the water–energy–food security nexus. We suggest that the resilience to droughts could be improved with region-specific drought management plans and by including droughts in existing regional preparedness exercises.

scholarly journals A simulation impact evaluation of social-economic development on water resource use

2014 ◽  
Vol 4 (3) ◽  
pp. 137-153 ◽  
Author(s):  
Wenyi Wang ◽  
Weihua Zeng ◽  
Bo Yao ◽  
Jing Wei
Keyword(s):  
Economic Development ◽  
Water Resources ◽  
Water Resource ◽  
Water Resource Management ◽  
Social Economic ◽  
Water Shortage ◽  
Social Growth ◽  
Tongzhou District ◽  
Social Economic Development ◽  
The Impact

Due to the fast growth of the economy and population, the water scarcity issue has aroused widespread critical concern. In fact, reasonable structure, adaptive patterns and effective regulation of the economy, society and water resources can bring a harmonious future. Therefore, the study of how to balance economic social growth and water resources is of great importance. A model of the water resource, society and economy system of the Tongzhou district was designed by Stella. The model established here attempts to analyze future trends in social-economic development and the impact of the economic and population growth on water use in the Tongzhou district under three scenarios. The results reveal that the water shortage is very serious. If the current trends persist, the existing water supply will not be able to meet the water demand in the future. Tongzhou district's water shortage will be 162.50 million m3 in 2020 under the business-as-usual scenario. Therefore, it is necessary to develop unconventional water sources and improve the water-saving capacity of production and life to alleviate the water tensions. This research offers insight into larger questions regarding economic growth and water resource management in general.

scholarly journals Assessment of Future Climate Change Impact on Agricultural Water Supply Capacity in Geum River Basin Using SWAT and MODSIM-DSS

2020 ◽  
Vol 20 (6) ◽  
pp. 55-66
Author(s):  
Sehoon Kim ◽  
Chunggil Jung ◽  
Jiwan Lee ◽  
Jinuk Kim ◽  
Seongjoon Kim
Keyword(s):  
Water Supply ◽  
River Basin ◽  
Water Shortage ◽  
Future Climate Change ◽  
Industrial Water ◽  
Agricultural Water ◽  
Water Shortages ◽  
Daily Streamflow ◽  
Agricultural Water Supply ◽  
Supply Capacity

This study is to evaluate future agricultural water supply capacity in Geum river basin (9,865 km<sup>2</sup>) using SWAT and MODSIM-DSS. The MODSIM-DSS was established by dividing the basin into 14 subbasins, and the irrigation facilities of agricultural reservoirs, pumping stations, diversions, culverts and groundwater wells were grouped within each subbasin, and networked between subbasins including municipal and industrial water supplies. The SWAT was calibrated and validated using 11 years (2005-2015) daily streamflow data of two dams (DCD and YDD) and 4 years (August 2012 to December 2015) data of three weirs (SJW, GJW, and BJW) considering water withdrawals and return flows from agricultural, municipal, and industrial water uses. The Nash−Sutcliffe efficiency (NSE) of two dam and three weirs inflows were 0.55∼0.70 and 0.57∼0.77 respectively. Through MODSIM-DSS run for 34 years from 1982 to 2015, the agricultural water shortage had occurred during the drought years of 1982, 1988, 1994, 2001 and 2015. The agricultural water shortage could be calculated as 197.8 × 10<sup>6</sup> m<sup>3</sup>, 181.9 × 10<sup>6</sup> m<sup>3</sup>, 211.5 × 10<sup>6</sup> m<sup>3</sup>, 189.2 × 10<sup>6</sup> m<sup>3</sup> and 182.0 × 10<sup>6</sup> m<sup>3</sup> respectively. The big shortages of agricultural water were shown in water resources unit map number of 3004 (Yeongdongcheon) and 3012 (Geumgang Gongju) areas exceeding 25.1 × 10<sup>6</sup> m<sup>3</sup> and 47.4 × 10<sup>6</sup> m<sup>3</sup>. From the estimation of future agricultural water requirement using RCP 8.5 INM-CM4 scenario, the 3004 and 3012 areas showed significant water shortages of 26.1 × 10<sup>6</sup> m<sup>3</sup> (104.1%) and 50.9 × 10<sup>6</sup> m<sup>3</sup> (107.4%) in 2080s (2070∼2099) compared to the present shortages. The water shortages decreased to 23.6 × 10<sup>6</sup> m<sup>3</sup> (94.0%) and 43.3 × 10<sup>6</sup> m<sup>3</sup> (91.4%) below of the present shortages by developing irrigation facilities.

scholarly journals System Dynamic Model for Sustainable Water Supply Strategy in Sentul City Area

2021 ◽  
Vol 11 (2) ◽  
pp. 233-240
Author(s):  
Danang Aria Pranedya Baskoro ◽  
Atep Hermawan ◽  
Tri Permadi
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Dynamic Models ◽  
Rainwater Harvesting ◽  
High Population ◽  
Wastewater Management ◽  
System Modelling ◽  
Water Crisis ◽  
Sustainable Water Supply ◽  
The Impact

Good management of water resources is a requirement for an area that has a high population development. Sentul City, which is an independent city in Bogor Regency which has a high population, is in an area that lacks water, because of this Sentul City requires infrastructure and policies that are able to ensure the availability of water for its residents. One of the paradigms of water management in urban areas is a water sensitive city. One of the steps in this paradigm is wastewater management and rainwater harvesting. The dynamic system modelling method is used to predict the impact of implementing several policies that will be taken to manage water resources. The objectives of this study are to build dynamic models to predict water supply and demand and to analyze policies for wastewater management and rainwater harvesting. Sentul City water demand is estimated will reach 122 105 000 m3 and a water crisis will occur in 2027. The wastewater recycle policy can inhibit the water crisis until 2030 and the negative water balance will last until 2040. Combining wastewater recycle and rainwater harvesting can increase water availability by 240% and prevent a water crisis.

scholarly journals Effect of unconventional water resources interventions on the management of Gaza Coastal Aquifer in Palestine

2021 ◽  
Author(s):  
Hassan Al-Najjar ◽  
Gokmen Ceribasi ◽  
Ahmet Iyad Ceyhunlu
Keyword(s):  
Wastewater Treatment ◽  
Water Resources ◽  
Coastal Aquifer ◽  
Large Scale ◽  
Hot Spot ◽  
Gaza Strip ◽  
Groundwater Depletion ◽  
Seawater Desalination ◽  
Intervention Plan ◽  
The Impact

Abstract The non-conventional water resources of seawater desalination, wastewater treatment, and stormwater harvesting are promising water resources to enhance the water supply and to cope with the groundwater depletion of the Gaza Coastal Aquifer (GCA). In total, the current daily operation of the short-term low-volume (STLV) seawater desalination plants produces 36,000 m3 and on the large-scale perspective, the seawater desalination capacity is planned to lift from 150,000 to 300,000 m3 per day by the years 2025 and 2035, respectively. The wastewater treatment and reuse activities are processed through three wastewater treatment plants with a total daily capacity of 130,000 m3 which is proposed to be lifted to a capacity of 235,000 m3 by the beginning of 2025. The stormwater collecting and harvesting supply the water sector by about 550–820 cubic meters per day. The proposed stochastic and artificial intelligence model that was developed in this study to simulate the interactive conditions between the groundwater and the water intervention plan show proper performance in terms of (r) = 0.95–0.99 and the root mean square error (RMSE) = 0.09–0.21. The model outputs reveal that the annual groundwater abstractions will reach 192 million cubic meters by 2040 with an annual increasing rate of +3%. By applying the model, the optimum utilizing of the unconventional water resources contributes positively to the recovery of the GCA which is experiencing a decline hot spot in the water level reaches to −19 m below mean sea level (MSL) and is expected to drop to −28 m MSL by 2040. The impact of unconventional water resources interventions was investigated by simulating the water table trend using stochastic models and artificial neural networks (ANNs) through three scenarios. The first scenario which addresses the non-intervention status indicates that the groundwater table will decline by −1.5% in the northern governorates and by −51% in the southern governorates of the Gaza Strip within 2020–2040. The second scenario demonstrates the impact of the existing water interventions which reveals an interim recovery in the groundwater balance until 2025 where the water consumption tends to increase rapidly. The third scenario illustrates the impact of applying the full water management intervention plan where the depression cone in the groundwater level will be restored by about +10 m.

scholarly journals Analysis of regional features of water use structure in the North Caucasus. Part 1. Water availability and water consumption

2021 ◽  
pp. 96-105
Author(s):  
Е.А. Rybak ◽  
◽  
О.О. Rybak ◽  
◽  
◽  
...  
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Water Use ◽  
Water Consumption ◽  
Water Withdrawal ◽  
Negative Consequences ◽  
North Caucasus ◽  
The North ◽  
Access To Water ◽  
The Impact

The key task of the societal development is to ensure effective management of water resources. As a consequence of aggravation of water problems in the world, the issues of sustainable and guaranteed access to water are considered as one of the components of ensuring food security, conservation and restoration recovery of natural resources, which are the basis of life support for the population. To date, the regulation of water resources in the North Caucasus experiences difficulties resulting from fragmented water use, unequal access to water, and contradictory legislation in the field of water use regulation. These problems are compounded by two factors: climate change and demographic situation. The main problem of water consumption in Russia is the irrational and ineffective use of water resources and, as a result, high specific water consumption. In the North Caucasus, water consumption is currently one of the highest in Russia. The characteristics of the impact on water resources are directly related to the use of water, the main elements of which are the water withdrawal from natural sources, the use of water and the discharge of wastewater. Based on open statistical sources, we analyzed the current situation in the use of water resources in the North Caucasus. The North Caucasus is characterized by problems similar to those of many regions of the country, in particular, large losses during transportation due to the emergency state of water supply networks and treatment facilities. Water supply problems in the North Caucasus are expected to worsen in the future. If urgent measures are not taken, the complex of problems will only accumulate. To overcome their negative consequences, it is necessary to revise the water use strategy and change the water consumption structure.

scholarly journals A joint-probabilistic programming method for water resources optimal allocation under uncertainty: a case study in the Beiyun River, China

2017 ◽  
Vol 20 (2) ◽  
pp. 393-409
Author(s):  
Xueping Gao ◽  
Yinzhu Liu ◽  
Bowen Sun
Keyword(s):  
Water Resources ◽  
Water Supply ◽  
Water Resource ◽  
Water Allocation ◽  
Optimal Allocation ◽  
Joint Probability ◽  
Water Shortage ◽  
Copula Functions ◽  
Local Water ◽  
Allocation Plans

Abstract In recent years, the lower reaches of the Beiyun River have suffered from growing water resource shortages due to the reduction of upstream water resource and drying up of the stream channel. More reasonable and scientifically based water allocation plans should be developed and implemented; however, uncertainties exist regarding the determination of water supply availability and spillage of extra water. To assess and manage regional water shortage, the combined effects of multiple water supply sources as well as the joint probability of typical events should be considered. The joint probability of water supply, considering upstream and local water supplies, was estimated through the copula functions. A multi-objective optimization model was then developed and solved by improved genetic algorithms to plan water resources allocation within a multi-source environment containing multiple competitive users. The framework is demonstrated, and represents a range of different water supply scenarios in terms of different probabilities of occurrence and constraint violations. The results showed that water allocation was greatly influenced by uncertainties, especially in upstream-local water supply. In addition, violating water-allocation constraint posed an extra uncertainty. This study facilitates the proposition of adaption allocation plans for uncertain environments, aiming to balance the shortage, economy, and reliability.

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