scholarly journals Assessing the current status of water sources for domestic and agricultural purposes in Ia Grai district, Gia Lai province

2020 ◽  
Vol 19 (01) ◽  
pp. 77-85
Author(s):  
Tuan Q. Le
Keyword(s):  
Water Use ◽  
Field Survey ◽  
Water Shortage ◽  
National Standard ◽  
Current Status ◽  
Agricultural Irrigation ◽  
Agricultural Activities ◽  
Quality Testing ◽  
Household Interview ◽  
Domestic Purpose

Ia Grai district is located in the remote area of Gia Lai province. The income mostly relies on agricultural activities. However, the water shortage for agriculture is an issue and the irrigation much relies on the seasonal rainfall. This study aimed to figure out the demand for water use and other sources of water for irrigation. Household interview, water quality testing and field survey were conducted at 3 communes: Ia Kha, Ia Hrung and Ia To due to their largest agricultural area. The results showed that surface water had good quality; groundwater was polluted by microorganism but in the acceptable levels. All the water indicators met the national standard for the domestic purpose (column A1) and for agricultural irrigation (QCVN 39:2011/BTNMT). Based on the current demand for water use, the amount of water needs in 2020 was estimated as well as the solutions for water management and protection was also proposed for Ia Grai district

Pressure management in Waitakere City, New Zealand - a case study

2003 ◽  
Vol 3 (1-2) ◽  
pp. 135-141 ◽  
Author(s):  
Z. Pilipovic ◽  
R. Taylor
Keyword(s):  
Water Use ◽  
Water Loss ◽  
Water Cycle ◽  
Demand Management ◽  
Cost Benefit ◽  
Water Shortage ◽  
Design Tool ◽  
Network Computer ◽  
Water Pipeline ◽  
The City

In 1996, as part of Waitakere Council’s Water Cycle Strategy, a pressure standardisation programme to permanently lower the average supply pressure citywide was implemented with the aim of reducing water loss and water use. The experience gained during the 1994/95 Auckland water shortage had confirmed that there was considerable scope to reduce pressures in many areas. Since 1996 water pressures have been reduced in over 60% of the reticulated area of the city, with the average pressure reduced from 710 kPa to 540 kPa. As a result of this programme water loss from the network has been reduced, there has been a reduction in the frequency of mains breaks and it is likely that the life of water pipeline assets has been extended. Furthermore both pressure and demand management initiatives have reduced per capita water use in the city by more than 10%. A network computer model was used as a design tool to check the network under various pressure regimes and cost benefit analyses were carried out for various design scenarios. Fire sprinkler systems were checked as part of the design process. Minimum service standards were not reduced and in some cases pressures were actually increased. This paper covers the various aspects of the design, the implementation and the results of the pressure standardisation programme.

Current status, problems and control strategies of water resources pollution in China

Water Policy ◽  
2014 ◽  
Vol 17 (3) ◽  
pp. 423-440 ◽  
Author(s):  
Lei Wu ◽  
Tong Qi ◽  
Dan Li ◽  
Huijuan Yang ◽  
Guoqing Liu ◽  
...  
Keyword(s):  
Water Pollution ◽  
Control Strategies ◽  
Water Environment ◽  
Underground Water ◽  
National Standard ◽  
Current Status ◽  
Food Borne ◽  
Major River ◽  
And Control ◽  
Research And Policy

The surface water of 10 major river systems across China has been under intermediate pollution with striking eutrophication problems in major lakes (reservoirs). More data from the Ministry of Environmental Protection of China showed that underground water in 57% of monitoring sites across Chinese cities was polluted or extremely polluted. Rural water pollution, the rising number of incidents of industrial pollution, outdated sewerage systems, and the overuse of pesticides and chemical fertilizers also endanger the health of rural inhabitants in China. Nearly 0.2 billion rural residents could not use drinking water in accordance with the national standard, and there were reports of ‘cancer villages' and food-borne diseases (cancer village refers to a village where a certain proportion of its inhabitants suffer from the same kind of cancer or where there is a hike in cancer incidence in that area). This study aims to raise awareness of the prevention and control of water pollution and to propose a set of national research and policy initiatives for the future safety of the water environment in China.

scholarly journals Water Use Efficiency Current Status Assessment in the Context of WATenERgy CYCLE Project

Proceedings ◽  
2018 ◽  
Vol 2 (11) ◽  
pp. 602
Author(s):  
Stavroula Tsitsifli ◽  
Anastasia Papadopoulou ◽  
Vasilis Kanakoudis ◽  
Konstantinos Gonelas
Keyword(s):  
Water Supply ◽  
Water Use Efficiency ◽  
Water Use ◽  
Methodological Approach ◽  
National Level ◽  
Water Utilities ◽  
Current Status ◽  
Water Supply Systems ◽  
Use Efficiency ◽  
Supply Systems

Water use efficiency is a crucial issue in drinking water utilities as it is connected to environmental and economic consequences. WATenERgy CYCLE project aims at developing a methodological approach towards efficient and effective transnational water and energy resources management in the Balkan–Mediterranean area. The paper presents the results of performance evaluation of the water supply systems of the water utilities involved in the project, both at local and national level. The methodology used in the water balance and performance indicators as well as data on the operational status of the water supply systems. The results showed that Non-Revenue Water is one of the major problems addressed.

scholarly journals How downstream sub-basins depend on upstream inflows to avoid scarcity: typology and global analysis of transboundary rivers

2018 ◽  
Vol 22 (5) ◽  
pp. 2795-2809 ◽  
Author(s):  
Hafsa Ahmed Munia ◽  
Joseph H. A. Guillaume ◽  
Naho Mirumachi ◽  
Yoshihide Wada ◽  
Matti Kummu
Keyword(s):  
Water Stress ◽  
Water Use ◽  
Water Availability ◽  
Water Scarcity ◽  
Management Practices ◽  
Global Analysis ◽  
Water Shortage ◽  
River Basins ◽  
Analytical Framework ◽  
Available Water

Abstract. Countries sharing river basins are often dependent upon water originating outside their boundaries; meaning that without that upstream water, water scarcity may occur with flow-on implications for water use and management. We develop a formalisation of this concept drawing on ideas about the transition between regimes from resilience literature, using water stress and water shortage as indicators of water scarcity. In our analytical framework, dependency occurs if water from upstream is needed to avoid scarcity. This can be diagnosed by comparing different types of water availability on which a sub-basin relies, in particular local runoff and upstream inflows. At the same time, possible upstream water withdrawals reduce available water downstream, influencing the latter water availability. By developing a framework of scarcity and dependency, we contribute to the understanding of transitions between system regimes. We apply our analytical framework to global transboundary river basins at the scale of sub-basin areas (SBAs). Our results show that 1175 million people live under water stress (42 % of the total transboundary population). Surprisingly, the majority (1150 million) of these currently suffer from stress only due to their own excessive water use and possible water from upstream does not have impact on the stress status – i.e. they are not yet dependent on upstream water to avoid stress – but could still impact on the intensity of the stress. At the same time, 386 million people (14 %) live in SBAs that can avoid stress owing to available water from upstream and have thus upstream dependency. In the case of water shortage, 306 million people (11 %) live in SBAs dependent on upstream water to avoid possible shortage. The identification of transitions between system regimes sheds light on how SBAs may be affected in the future, potentially contributing to further refined analysis of inter- and intrabasin hydro-political power relations and strategic planning of management practices in transboundary basins.

Water in Cities

2005 ◽  
Author(s):  
Goh Kim Chuan ◽  
Avijit Gupta
Keyword(s):  
Water Supply ◽  
Southeast Asia ◽  
Distribution System ◽  
Significant Proportion ◽  
Water Shortage ◽  
Current Status ◽  
Annual Rainfall ◽  
Large Cities ◽  
Success Stories ◽  
Urban Settlements

Southeast Asia, with most of its area receiving an annual rainfall of more than 2000 mm, is a region of positive water balance. It is also an area where unfulfilled demand for water is not unknown. Such a contradiction happens at times in its towns and cities. Several Malaysian urban settlements, for example, suffer occasionally from water shortage in a country with an average annual rainfall of about 3000 mm. Kuala Lumpur went through a prolonged period of water shortage in 1998 (Hamirdin 1998) in spite of large allocations made earlier in various five-year plans towards developing water supply infrastructure. Such shortages are common during long dry periods associated with El Niño. Regional water shortages may become more common in future, especially with the rising population and economic expansion. The shortages are the result of an inability to meet the rising demand of water in cities driven by both increasing population and progressive prosperity. Serious shortage occurs in large cities such as Jakarta, Bangkok, and Manila where a significant proportion of their population has no immediate access to municipal potable water. Even where piped connection exists, supplies are not available round the clock and often do not meet the required water quality standards. In many cities the local sources are inadequate and water has to be brought in from rural areas. The demand for water in a city has to be met on both quantitative and qualitative terms. For example, drinking water supplied to households by a municipal administration has to meet a given standard (WHO 1993). Ideally a city should have enough water to drink, to meet industrial demand, and to be able to store an adequate volume under pressure for firefighting and street cleansing. Supplying a city with water requires water sources, a treatment system, a distribution system, and arrangements for treating waste water and its disposal. In this chapter we review the current status of water supply in urban Southeast Asia and the sources that are available, concentrating on the major cities. We indicate the success stories as well as the shortcomings.

scholarly journals Water-Use Characteristics and Physiological Response of Moso Bamboo to Flash Droughts

2019 ◽  
Vol 16 (12) ◽  
pp. 2174 ◽  
Author(s):  
Minxia Zhang ◽  
Shulin Chen ◽  
Hong Jiang ◽  
Yong Lin ◽  
Jinmeng Zhang ◽  
...  
Keyword(s):  
Water Content ◽  
Water Use ◽  
Forest Canopy ◽  
Stand Density ◽  
Water Shortage ◽  
Volumetric Water Content ◽  
Moso Bamboo ◽  
Extreme Drought ◽  
Soil Volumetric Water Content ◽  
The Stability

Frequent flash droughts can rapidly lead to water shortage, which affects the stability of ecosystems. This study determines the water-use characteristics and physiological mechanisms underlying Moso bamboo response to flash-drought events, and estimates changes to water budgets caused by extreme drought. We analyzed the variability in forest canopy transpiration versus precipitation from 2011–2013. Evapotranspiration reached 730 mm during flash drought years. When the vapor pressure deficit > 2 kPa and evapotranspiration > 4.27 mm·day−1, evapotranspiration was mainly controlled through stomatal opening and closing to reduce water loss. However, water exchange mainly occurred in the upper 0–50 cm of the soil. When soil volumetric water content of 50 cm was lower than 0.17 m3·m−3, physiological dehydration occurred in Moso bamboo to reduce transpiration by defoliation, which leads to water-use efficiency decrease. When mean stand density was <3500 trees·ha−1, the bamboo forest can safely survive the flash drought. Therefore, we recommend thinning Moso bamboo as a management strategy to reduce transpiration in response to future extreme drought events. Additionally, the response function of soil volumetric water content should be used to better simulate evapotranspiration, especially when soil water is limited.

Evaluation of water shortage crisis in the Middle East and possible remedies

2019 ◽  
Vol 69 (1) ◽  
pp. 85-98 ◽  
Author(s):  
Omid Bozorg-Haddad ◽  
Babak Zolghadr-Asli ◽  
Parisa Sarzaeim ◽  
Mahyar Aboutalebi ◽  
Xuefeng Chu ◽  
...  
Keyword(s):  
Water Resources ◽  
Middle East ◽  
Water Use ◽  
Water Scarcity ◽  
Middle Eastern ◽  
Water Storage ◽  
Water Shortage ◽  
East Region ◽  
Middle East Region ◽  
Regional Water

Abstract Water resources in the Middle East region are becoming scarce, while millions of people already do not have access to adequate water for drinking and sanitary purposes. Water resources depletion has become a significant problem in this region that is likely to worsen. Current research by remote sensing analysis indicates a descending trend of water storage in the Middle East region, where agriculture plays a crucial role in socio-economic life. This study introduces an approach quantifying water depletion in the Middle Eastern countries, which are being challenged in the management of their water resources. Furthermore, this paper presents results of a survey assessing the status of water use and supply in Middle Eastern countries and outlines some potential remedies. Specifically, Iran's water use is evaluated and compared with its neighbors'. The water equivalent anomaly (WEA) and total water storage (TWS) depletion are two indexes of water scarcity calculated for Middle Eastern countries surveyed herein. Our analysis reveals that Lebanon, Syria, Iraq, and Iran are countries with very negative water scarcity indexes. These estimates prove that international cooperation is needed to manage available regional water resources and reverse depletion of natural water sources. It is demonstrated herein that virtual water trade can help remediate regional water shortage in Middle Eastern countries.

scholarly journals Agricultural groundwater management in the Upper Bhima Basin, India: current status and future scenarios

2013 ◽  
Vol 17 (2) ◽  
pp. 507-517 ◽  
Author(s):  
L. Surinaidu ◽  
C. G. D. Bacon ◽  
P. Pavelic
Keyword(s):  
Climate Change ◽  
Water Use ◽  
Water Discharge ◽  
Climate Change Impacts ◽  
Current Status ◽  
Small Scale ◽  
Groundwater Levels ◽  
Groundwater Overdraft ◽  
Use Efficiency ◽  
Increasing Demand

Abstract. The basaltic aquifers of the Upper Bhima River basin in southern India are heavily utilized for small-scale agriculture but face increasing demand-related pressures along with uncertainty associated with climate change impacts. To evaluate likely groundwater resource impacts over the coming decades, a regional groundwater flow model for the basin was developed. Model predictions associated with different climate change and abstraction scenarios indicate that the continuation of current rates of abstraction would lead to significant groundwater overdraft, with groundwater elevations predicted to fall by −6 m over the next three decades. Groundwater elevations can however be stabilized, but would require 20–30% of the mean surface water discharge from the basin to be recharged to groundwater, along with reductions in pumping (5–10%) brought about by improved water efficiency practices and/or shifts towards lower-water use crops. Modest reductions in pumping alone cannot stabilize groundwater levels; targeted conjunctive use and improved water use efficiency are also needed.

Wastewater Reclamation and Water Resources Management

1991 ◽  
Vol 24 (9) ◽  
pp. 251-265 ◽  
Author(s):  
Gedaliah Shelef
Keyword(s):  
Water Resources ◽  
Urban Areas ◽  
Distribution Systems ◽  
Wastewater Reuse ◽  
Water Shortage ◽  
Agricultural Irrigation ◽  
Wastewater Reclamation ◽  
Dual Distribution ◽  
Complex Scheme ◽  
The Cost

Wastewater reclamation and reuse are becoming important components of the management of urban, regional and national water resources. Recently, not only countries with chronic water shortage, but also urban areas in temperate climates have considered and implemented wastewater reuse schemes expanding the scope of consumptive uses to include toilet flushing and landscape irrigation, using dual distribution systems and even the reuse as potable waters is being considered and evaluated. Israel is an example of intensive reuse in agricultural irrigation and much experience has been gained in treatment, seasonal reservoirs and establishing quality requirements. The economical justification of wastewater reuse schemes should take into account the overall treatment costs, the ‘environmental and health allowances', i.e. the cost of treatment required even when reuse is not practiced, the benefits of water and the savings in conveyance and pumping. The paper also briefly describes the two largest wastewater reclamation projects in Israel, namely: the Kishon Complex Scheme and the Dan Region Scheme, both aimed at unrestricted agricultural irrigation of all crops.

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