scholarly journals Improving the rational use of water resources of the Chograi reservoir based on water simulation modeling

2021 ◽  
Author(s):  
V. D. Gostishchev ◽  
◽  
T. S. Ponomarenko ◽  
A. V. Breeva ◽  
◽  
...  
Keyword(s):  
Water Management ◽  
Water Resources ◽  
Water Balance ◽  
Water Supply ◽  
Water Intake ◽  
Simulation Modeling ◽  
Initial Conditions ◽  
Main Canal ◽  
Water Simulation ◽  
Rational Operation

Purpose: to develop scenarios for filling and rational exploitation of the Chograi reservoir under the conditions of water resources shortage of (to conduct water balance studies). Materials and methods. The analysis of the use and distribution of water resources of the Chograi reservoir was carried out on the basis of actual data obtained for the period 2016–2020. To conduct water balance studies, a simulation water management model has been developed. It is based on the water allocation regime established in 2020. Results and discussion. Three possible scenarios for water management situation development in the Chograi reservoir have been developed, from which the optimal one has been selected. As the initial conditions for modeling, the regimes of water supply through the Tersko-Kumsky and Kumo-Manychsky canals, as well as water intake into the Chernozemelsky irrigation and watering system (CHOS) through the Chernozemelsky main canal were used. It was found that the actual value of water intake from the Terek river exceeded the plan, but remained below the water intake limit. Thus, it is possible to increase the volume of water supply to the reservoir due to withdrawal up to the values of the permitted limit. The analysis shows that the largest volume of water resources is used for feeding water bodies and for estuary irrigation. The second largest volume taken from the Chograi reservoir is the water supply through the bottom spillway to the downstream of the hydroelectric complex in the Eastern Manych river with expenditures exceeding sanitary releases. It is possible to reduce the consumed water resources by optimizing water management at the CHOS and reducing discharges. Conclusions. An optimal scenario for filling and rational operation of the Chograi reservoir has been developed, the fulfillment of the conditions of which will ensure the filling of the reservoir to the level of 20.35 m BS. At the same time, the volume of filling will be 209.75 million m³. The development of the water management situation according to the scenario under consideration will provide water resources for the CHOS for the period 2021–2022.

scholarly journals APPLICATION OF NEW TECHNOLOGIES IN THE WATER SUPPLY SYSTEM

2020 ◽  
Vol 1 (22) ◽  
Author(s):  
Sanel Buljubašić
Keyword(s):  
Climate Change ◽  
Water Management ◽  
Drinking Water ◽  
Water Resources ◽  
Water Supply ◽  
New Technologies ◽  
Supply System ◽  
Water Supply System ◽  
Integrated Water Management

Freshwater water resources are not inexhaustible [1]. In recent decades, more and more facts point to this statement from the European Charter for Water. Uncontrolled drinking water interventions, losses in water supply and climate change indicate the problem of sufficient quantities of drinking water [2]. Looking at this problem, it is hard to believe that new quantities of drinking water can be produced. The model of integrated water management has been increasingly used in recent years. The application of new technologies in water supply creates conditions for the controlled management of water intakes and losses in water supply. Each water sapply system needs to develop its own model for integrated water management.

scholarly journals Water Supply and Water Scarcity

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2347 ◽  
Author(s):  
Vasileios A. Tzanakakis ◽  
Nikolaos V. Paranychianakis ◽  
Andreas N. Angelakis
Keyword(s):  
Water Management ◽  
Water Resources ◽  
Water Supply ◽  
Water Scarcity ◽  
Rainwater Harvesting ◽  
Climatic Variability ◽  
Health Issues ◽  
Water History ◽  
Water Users ◽  
Use Efficiency

This paper provides an overview of the Special Issue on water supply and water scarcity. The papers selected for publication include review papers on water history, on water management issues under water scarcity regimes, on rainwater harvesting, on water quality and degradation, and on climatic variability impacts on water resources. Overall, the issue underscores the need for a revised water management, especially in areas with demographic change and climate vulnerability towards sustainable and secure water supply. Moreover, general guidelines and possible solutions, such as the adoption of advanced technological solutions and practices that improve water use efficiency and the use of alternative (non-conventional) water resources are highlighted and discussed to address growing environmental and health issues and to reduce the emerging conflicts among water users.

scholarly journals Patterns of Water Use in California

2021 ◽  
Vol 19 (4) ◽  
Author(s):  
John Helly ◽  
◽  
Daniel Cayan ◽  
Thomas Corringham ◽  
Jennifer Stricklin ◽  
...  
Keyword(s):  
Decision Making ◽  
Water Resources ◽  
Water Balance ◽  
Water Supply ◽  
Water Use ◽  
Water Resource ◽  
Water Resource Management ◽  
Regional Scale ◽  
Data Set ◽  
Scale Data

Recent patterns of water use and supply in California are presented based on a new data set compiled from the California Department of Water Resources water balance data for 2002 through 2016. The water use and supply include surface water and groundwater, although groundwater reporting has been incomplete. These data are used to support the Water Plan released every 3 to 5 years and are the most comprehensive and finest spatial- and temporal-scale data set for California water resources. First, using the Bay–Delta watershed as a case example, we show that recent fluctuations in water use are highly correlated with variations in precipitation. Developed water supplies and use show these fluctuations, but they are modified by reservoir inflows and releases, groundwater supplies, and Delta outflows. Second, although the annually precipitated water supply in the Bay–Delta varies by about 30%, the developed water supply damps this considerably. The water management system maintained nearly constant agricultural water use even in periods of intense drought, with year-to-year variation of about 7%. Variability in urban water use is higher (∼20%), largely from conservation during periods of drought. Finally, this information can help improve water resource management because it connects regional-scale data to meaningful policy decision-making at county and sub-county levels. At a time when water policy and management are being re-evaluated across the American West in the light of changing climate, decision-making informed by science and data is urgently needed. The statewide water balance data provide the means to establish a consistent, quantitative framework for water resource analysis throughout the state.

scholarly journals DEVELOPMENT OF SCIENTIFIC BASIS FOR WATER MANAGEMENT IN AGROLANDSCAPES

2019 ◽  
pp. 9-16
Author(s):  
Yu. O. Mikhailov ◽  
A. M. Shevchenko ◽  
Iu. Yu. Danylenko ◽  
S. M. Liutnytskyi ◽  
I. L. Goncharuk ◽  
...  
Keyword(s):  
Water Management ◽  
Chemical Composition ◽  
Surface Water ◽  
Water Resources ◽  
Water Balance ◽  
Ground Water ◽  
Atmospheric Precipitation ◽  
Agricultural Landscapes ◽  
Water Bodies ◽  
Available Volume

 Quantitative and qualitative depletion of water resources in Ukraine because of the increase in climate aridity make the problem of integrated surface and ground water management more urgent. The integrated management is based on the water balance of the territories, which automatically takes into account natural and artificial features of water use. The paper presents the results of a long term research aimed at resolving the problems of scientific support of integrated water resources management in Ukraine in the context of climate change. The plans for integrated water management are developed according to the administrative principle allowing optimization of the structure of water consumption and the assessment of available water resources capacity to meet water demand of the required quality without environmental risk for aquatic ecosystems and population. The surface and ground water in Ukraine have spatially homogeneous hydrochemical spectrum, which characterizes the concentration anions and cations in water and the nature of their change at different water exchange rates. Studies of hydrochemical spectrum have shown that its basic parameters are much higher for groundwater than for surface water. The results of the study on the spatial changes in the chemical composition of surface waters in the Dnipro river basin testify to the distinct homogeneity of their hydrochemical spectrum, which gives the reason to limit in practice observations of changes in the chemical composition of water to local points. As the experimental data are accumulated and the geospatial analysis of hydrochemical spectrum is made, the number of such points can be reduced ten times without significant negative impact on the reliability of the final results. It is possible to draw up a water balance with the use of correlation functions, the observance of which will guarantee the rational water resources use, based on their actual available volume and restrictions on the total water inflow, filtration losses, surface runoff (discharges). The water balance in the graphical representation is described by a linear function, which cuts the average of the sum of expendable elements on the ordinate axis over the entire observation period. The tangent of the slope of the graph represents the coefficient of water supply. The scope of this methodological approach's application is limited only by the availability of raw data. There are sufficient data from precipitation observations, water abstraction from all sources in volumes comparable to precipitation and more. It is also desirable to have observations of groundwater level fluctuations and air moisture deficit. The experimental research confirmed a high positive impact on the water resources formation made by forests, shelterbelts and meadows. In the humid zone it is possible to separate natural landscapes of wetlands and floodplains (60% of the territory), in the southern part - transitional landscapes that replace artificial agrolandscapes (40% of the territory). In arid climate conditions, the types of landscapes differ in the area of irrigated lands and the density of shelterbelts. Agrolandscapes are complex natural-technical systems. In most cases, when investigating their impact on the processes of formation and use of water, it is possible to operate a finite number of interconnected parts (subsystems). The purpose of such separation on subsystems is to obtain typical areas for which spatial structure of agricultural landscapes can be experimentally evaluated and the nature of its relationship with the factors of surface water resources formation can be determined. According to the assessment of water balance of rural territories, their water resources potential is equal to the sum of atmospheric precipitation and the volumes of water entering the balance space due to its withdraw for economic needs from surface and ground water bodies. When drawing up water balance for a hydrological year, water resources do not include precipitation, which is almost completely converted to river flow. The available volume of water for use should include the volume of water, the removal of which from natural or artificial circulation will not lead to negative environmental impacts or increase the cost of economic activity and restoration of fresh water bodies. The volume of water available for use is also limited by its qualitative indicators, which in turn are determined by its chemical composition (spectrum).

scholarly journals Effective economic growth under conditions of regional water management dependence

2021 ◽  
pp. 22-43
Author(s):  
Svitlana Fedulova ◽  
Volodymyr Dubnytskyi ◽  
Nataliia Naumenko ◽  
Vitalina Komirna ◽  
Iryna Melnikova ◽  
...  
Keyword(s):  
Water Management ◽  
Economic Growth ◽  
Water Resources ◽  
Water Supply ◽  
Regional Development ◽  
Economic System ◽  
Economic Systems ◽  
The Impact ◽  
Regional Water

Purpose. The purpose of the article is an identifying the impact of regional water management dependence on economic growth in the region. Methodology / approach. The subject of the study is theoretical and methodological basics of a new scientific paradigm for regulation the development of the regional socio-economic systems under the conditions of limited water resources. The study used traditional and special research methods, including: historical and logical – to analyze the evolution of regional socio-economic systems under conditions of limited water resources; abstractions and analogies – to reveal the essence of water-efficient regional socio-economic systems in the modern processes of regionalization and globalization; theoretical generalization, analysis and synthesis – to specify the categorical apparatus; statistical analysis to assess the level of needs of regional socio-economic systems in water resources and create an index of regional water management dependence; method of correlation analysis (biserial correlation, using a point biserial Pearson’s correlation coefficient). Results. The main idea of the paper is to study the issues of development of regional socio-economic systems under the conditions of limited water resources. Considering this, the paper is aimed at studying the impact of regional water management dependence on economic growth in the region. The tasks for development of regional socio-economic systems on the basis of water efficiency are defined, as well as the concept “water-efficient regional socio-economic system” is defined. The study presents a hypothesis about the need to change the paradigm of regulation of regional development on the basis of water use efficiency and regional water management dependence. In order to trade effectively with the main crops, it is necessary to determine whether there are sufficient water supplies in a given country and its regions. For this purpose, the authors proposes to use own indicator, such as the index of regional water management dependence. Thе characteristic of water management dependence is given, from regions where only up to half of the water supply of the territory is used, and to regions where more than 100 % of the water supply of the territory is used. The research has updated that the expansion of knowledge and understanding of the specifics of the water sector can solve significant problems. It is proved that the economic growth of the Ukrainian economy due to the agricultural sector has its limits and is limited by the water management dependence of the territories, ie the limitation of certain territories of the regions of Ukraine in terms of water resources. The next effective economic growth is possible only through the implementation of water-efficient technologies and intensification of water-efficient activities in the region. Originality / scientific novelty. The study for the first time defines the concept of water-efficient regional socio-economic system, so it is a socio-economic system that provides for the restoration of water resources in the region, reducing the water intensity of gross regional product (GRP) and approaching European norms and proposes the classification of regions according to the index of regional water management dependence on the basis of its threshold values. A scientific and methodological approach to assessing the level of needs of regional socio-economic systems in water resources has been improved, based on the application of the index of regional water management dependence, which is proposed to calculate the ratio of total fresh water use in the region to the volume of available river runoff in the region (parts of the water potential). The classification of regional socio-economic systems according to the level of water supply has been improved, which is based on the definition of threshold values of the index of regional water management dependence. The methodological bases for assessing the impact of the spatial economy on regional development under conditions of limited water resources have been improved, which differ in substantiating the dependence of the level of development of regions on the available water potential of the territory. Practical value / implications. The results of the study allow a more comprehensive approach to the study of the problem of using water resources in Ukraine in the context of their limitation. The results of the study showed that the economic complex in most regions is water-intensive and unbalanced, as well as does not provide restoration of water resources by environmental parameters and requires the implementation of infrastructure schemes for redistribution of water resources between regions for economic activity. The results are recommended for consideration by local governments and regional administration for the development and implementation of “Regional programs for the development of water management in the region” and for the development of “Strategies for regional development until 2025–2027”.

scholarly journals Daya Dukung Sumberdaya Air dan Indeks Kekritisan Air Sub DAS Cisokan Hulu

2021 ◽  
Vol 10 (3) ◽  
pp. 402
Author(s):  
Dwi Rustam Kendarto ◽  
Edy Suryadi ◽  
Rizky Mulya Sampurno ◽  
Audi Putra Cahyabhuana
Keyword(s):  
Ecosystem Services ◽  
Water Resources ◽  
Water Balance ◽  
Water Supply ◽  
Carrying Capacity ◽  
Water Demand ◽  
A Value ◽  
Water Resources Carrying Capacity ◽  
Criticality Index ◽  
Area Data

Upper Cisokan sub-watershed is a natural ecosystem of water resource providers that can be used directly or indirectly by the community in it. The population rate and sectoral needs in a sub-watershed area are estimated have put pressure to the water resources balance. The value of the carrying capacity and the water criticality index in the existing condition and its projections for the next 10 years are known from the water balance analysis. The availability of water resources (Wn) was determined based on the flow rate probability (Q80) of Weibull Method, the value of groundwater estimation, springs and wells, and also the raw water supply of local water company. Water demand (qpt) was estimated based on Statistic data of Upper Cisokan sub-Watershed 2020 and the projection for 2030, industrial data, agricultural area data, livestock production data, and fishery area data. The water resources carrying capacity (Cw) of the Upper Cisokan sub-watershed is generally still adequate (High), but at the peak of the dry season, namely June to November, the water carrying capacity status shows a value of 1.84 (Critical) to 0.24 (Deficit). In general, the water criticality index is still safe (Not Critical), but in the dry period, especially in July, August and November, it shows a value of 125% to 421% (Very Critical). To anticipate the water crisis, all stakeholders should allocate water efficiently according to its availability. So that the sub-watershed ecosystem is sustainably provide ecosystem services for providing water resources to the community. Key words: Ecosystem Services, Water Supply, Water Demand, Water Balance, Water Resources Carrying Capacity, Water Criticality Index, Upper Cisokan Sub Watershed

Safety Analysis in Water Supply Systems

2020 ◽  
Vol 50 (3) ◽  
pp. 97-114
Author(s):  
Barbara Tchórzewska-Cieślak ◽  
Krzysztof Boryczko
Keyword(s):  
Water Management ◽  
Sustainable Development ◽  
Water Resources ◽  
Water Supply ◽  
Safety Analysis ◽  
Water Supply Systems ◽  
Complex Issue ◽  
Health Safety ◽  
Safety Systems ◽  
Supply Systems

AbstractIn the aspect of water management, the Water Directive regulates water management with the principle of sustainable development, in shaping, protecting, using and managing water resources. Analysis and assessment of the CWSS safety is a complex issue, including the analysis of potential threats, their effects and safety systems (barriers). The analysis is performed in terms of the water consumers health safety, threats of lack or deficit in water supply and threats to the environment. This process should include the analysis of the existing condition, possible potential threats and safety and repair procedures.

Improving Public Water Resources Policy in Ukraine: Municipal and Environmental Issues

2020 ◽  
Vol 11 (3) ◽  
pp. 672
Author(s):  
Oleg A. DIEGTIAR ◽  
Volodymyr H. HORNYK ◽  
Sergii O. KRAVCHENKO ◽  
Valentyna V. KARLOVA ◽  
Tatyana V. SHTAL
Keyword(s):  
Water Management ◽  
Water Resources ◽  
Water Supply ◽  
Water Use ◽  
Management System ◽  
Public Private Partnership ◽  
Monitoring And Control ◽  
Water Management System ◽  
Private Partnership ◽  
Effective Water

The article focuses on the current topic of public water resources management. Globalization presents new challenges and demands for sustainable development for society. The current problem of modern humanity is the rational use of limited water resources. Water management is closely linked to the harmonization of social, economic and environmental requirements. The domestic water use system cannot meet European requirements for effective water supply due to moral and physical wear. An inadequate regulatory framework reduces the effectiveness of management processes and requires finding ways to attract investment to the industry, including in public-private cooperation. The analysis of the main problems of water management development, including non-compliance with European standards, moral and physical wear, lack of effective systems of water resources planning, monitoring and control of use of water resources, showed that these problems are primarily the result of an imperfect system of public water management. Based on commercialization processes, the water supply system through the implementation of public-private partnership mechanisms, provided that private entities are clearly monitored by public authorities, can produce significant socio-economic and environmental results. The research developed an algorithm for implementing an effective water management system at the state level by developing and implementing public-private partnership projects in accordance with the requirements of an effective water management system. The mathematical model of information and analytical support of processes of monitoring of rational water use in conditions of implementation of public-private partnership projects is defined.

scholarly journals Theoretical principles of formation of the sustainable water supply system in environmental conditions

2020 ◽  
pp. 32-39
Author(s):  
Lyudmila Levkovska ◽  
Valeriy Mandzyk ◽  
Olga Mytrofanova
Keyword(s):  
Water Management ◽  
Water Resources ◽  
Water Supply ◽  
Water Use ◽  
Institutional Environment ◽  
World View ◽  
Supply System ◽  
Water Supply System ◽  
Entrepreneurial Activity ◽  
Sustainable Water Supply

One of the powerful factors behind the transformation of the components of the institutional environment that has evolved dynamically in recent decades is considered to be the environmental constraint, the main reason for which is the exacerbation of global environmental challenges and changes in the world-view of the modern world. In this regard, the study identifies and analyzes the patterns of transformation of conceptual approaches to the formation of a sustainable water supply system under environmental constraints. It is proved that one of the determining external factors that cause such transformation is the increase of environmental awareness of the population at the local, national and world levels. The system of methods of sustainable water supply in the conditions of ecological restrictions is proposed, which provides for complex scientifically grounded application of modern infrastructural, institutional and ecosystem mechanisms of water policy implementation and institutionalization of a number of strategic directions and processes of development of integrated water resources management of Ukraine. It is established that in the field of institutional support for sustainable water use, the evolution of conceptual approaches under the influence of «ecological» philosophy will determine, first and foremost, the improvement of the regulatory system of streamlining relations, its focus on optimizing the use of water resources, their conservation and reproduction. It covers all the main characteristics of the institutional environment, the system of rules and norms of behavior of economic relations, changes in the set of incentives for entrepreneurial activity and in the sphere of coordination of economic, financial and regulatory activities and state planning. Therefore, the strategic directions of transformation of the current water management system in order to ensure their expanded reproduction is the institutionalization of new rules and standards for the economic development of water resources, in particular the specification of ownership rights for water resources and the spread of modern forms of public-private partnership in the field of water use. This will increase the level of investment support for the reproduction of water resources and expand the available financial base for the modernization of water management infrastructure.

scholarly journals Integrated Water Resources Management in the Maltese Islands

2020 ◽  
Vol 9 (3) ◽  
Author(s):  
Manuel Sapiano
Keyword(s):  
Water Management ◽  
Water Resources ◽  
Water Supply ◽  
Water Demand ◽  
Demand Management ◽  
Freshwater Resources ◽  
Integrated Water Management ◽  
Management Framework ◽  
Maltese Islands ◽  
Management Measures

The Maltese islands present a case of extreme natural freshwater resources unavailability where available resources are not sufficient to sustainably meet the national water demand. This due to the islands’ semi-arid climatic conditions and small land-mass which preclude the formation of surface water bodies such as rivers and lakes. In fact, the island’s fragile groundwater bodies are the only naturally renewable freshwater systems available for the development of water supply resources. Furthermore, the islands high population density results in a high specific demand for water to address the requirements of the population, their economic activities and water dependent ecosystems. In order to address these challenging conditions Malta has developed an integrated water management framework based on the conjunctive use of water supply augmentation and water demand management measures. Under this framework, Malta promotes the application of Non Conventional Water Resources such as the desalination of sea-water and the reclamation of wastewaters to supplement natural freshwater resources. The application of Non Conventional Water Resources enables national water demands to be met, whilst ensuring the sustainable use of natural freshwater resources. Water Demand Management measures ensure that water use is kept at highly efficient levels, thereby reducing the need for the production of water from these additional alternative resources. The development of this water management framework is outlined in Malta’s 2nd River Basin Management Plan. It therefore supports the achievement of the EU’s Water Framework Directive’s environmental objectives in the Malta River Basin District. Its integrated context also supports Malta’s adaptation efforts to climate change, whose impacts are expected to further exacerbate the water challenges facing the island. Malta’s water management experience highlights the importance of the development and implementation of integrated water management frameworks. The effective protection of natural freshwater resources such as the islands’ groundwater resources cannot be ensured if these are addressed in isolation but can only be achieved through the application of such integrated frameworks which addresses the sustainability and security of water supply on a national basis.

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