Climate change and the impact on drinking water supply in the Meuse river basin

2013 ◽  
pp. 37-43
Author(s):  
H Römgens
Keyword(s):  
Climate Change ◽  
Drinking Water ◽  
Water Supply ◽  
River Basin ◽  
Drinking Water Supply ◽  
The Impact ◽  
Meuse River

scholarly journals Community Knowledge and Perception on Climate Change and Drinking Water Supply in Nzoia River Basin, Kenya

2021 ◽  
pp. 1-19
Author(s):  
Ernest Othieno Odwori
Keyword(s):  
Climate Change ◽  
Drinking Water ◽  
Water Supply ◽  
River Basin ◽  
Policy Formulation ◽  
Drinking Water Supply ◽  
Small Scale ◽  
Cross Sectional Survey ◽  
Community Knowledge ◽  
Study Results

Nzoia River Basin is one of the regions in Kenya that is highly vulnerable to climate change. An understanding of community knowledge and perception on climate change and drinking water supply will provide strategic directions for national and county government policy, adaptation strategies and development of community-based guidelines on climate change. This study assessed community knowledge and perception on climate change and drinking water supply in Nzoia River Basin. A cross-sectional survey design was used. Three counties were randomly selected from the basin for study with Busia representing the lower catchment, Kakamega middle catchment and Trans Nzoia upper catchment. The study was carried out from May, 2017 to September, 2017. Multistage random sampling technique was used to select the 403 households administered with questionnaires. An observation checklist was used by the interviewers to collect household- and community-related information. The study results revealed that the community largely comes from low socio-economic background: only 24 % had post secondary education or higher, the majority were small scale farmers, housewives, casual workers and househelps (58 %), and only 25 % earned a monthly income above Ksh. 20,000 (equivalent to US $200). The majority of the participants 81 % had some knowledge about climate change but 19 % did not. On level of knowledge about climate change, 70% know a little/something about climate change, 21% know nothing about climate change and 9% know a lot about climate change. Majority of respondents, 76% receive climate change news from mass media (radio, newspaper and magazines, television); and 81 % point out that climate change will have public health risks in the community. The knowledge level about climate change in the basin was average. National and county governments should work with the sector stakeholders in the basin to improve community knowledge and perception regarding climate change, drinking water supply and health needs with proper content. The results of this study will go a long way in bridging the gap between policy formulation and building adaptive capacity to climate change in the basin.

The impact of climate change on drinking water supply by riverbank filtration

2008 ◽  
Vol 8 (3) ◽  
pp. 319-324 ◽  
Author(s):  
P. Eckert ◽  
R. Lamberts ◽  
C. Wagner
Keyword(s):  
Climate Change ◽  
Drinking Water ◽  
Water Supply ◽  
River Water ◽  
Drinking Water Supply ◽  
Riverbank Filtration ◽  
Water Production ◽  
Impact Of Climate Change ◽  
Drinking Water Production ◽  
The Impact

Riverbank filtration (RBF) is a well proven natural treatment, which in many countries is part of a multi-barrier concept in drinking water supply. The induced infiltration of river water into the aquifer produces a significant improvement in river water quality. Riverbank filtration wells are characterized by a high capacity. Based on data from recent years, an integrated approach to assessing the impact of climate change on safe drinking water production by RBF is demonstrated in the Lower Rhine Valley, Germany. Influencing factors on quantitative as well as qualitative aspects were identified. During low river water periods, the capacity of the RBF-wells decreases. In addition the lower discharge within the river is accompanied by a increased concentration of several chemical compounds. Together with higher water temperatures which influence the hydrogeochemical processes during RBF, the changing raw water composition has to be considered for the subsequent technical treatment step. However, our investigations reveal that despite the impact of climate change on RBF, the multi-protective barrier concept, including both natural and technical purification, has proven a reliable method for drinking water production. The sanitation of the Rhine over the last decades was an important step to make RBF more resilient to climate change.

scholarly journals Assessment of the Impact of Rainfall Variability on Drinking Water Production at Treatment Plants in Nzoia River Basin, Kenya

2021 ◽  
pp. 8-29
Author(s):  
Ernest Othieno Odwori
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Water Supply ◽  
River Basin ◽  
Rainfall Variability ◽  
Monthly Rainfall ◽  
Drinking Water Supply ◽  
Water Production ◽  
Water Supplies ◽  
Drinking Water Production

Increased wet season rainfall is associated with improved water supply at point water sources and improved river flows and water reservoir levels. For piped water supply schemes with surface water intakes, this is supposed to enhance operations since there is adequate raw water unlike in the dry season where operations are interrupted due to insufficient flows. However, this is not the case in Nzoia River Basin as established by this study. As rainfall increases, drinking water production in treatment plants at Moi’s Bridge, Lumakanda and Busia water supplies decrease and vice versa. Nzoia River Basin is one of the regions that is highly vulnerable to climate variability in Kenya, hence understanding rainfall variability and trends is important for better water resources management and especially drinking water supply. This study aimed at assessing rainfall variability and trends for 3 rainfall stations in Nzoia River Basin; Leissa Farm Kitale, Webuye Agricultural Office and Bunyala Irrigation Scheme and its impact on drinking water production at Moi’s Bridge, Lumakanda and Busia water supplies treatment plants. The rainfall data used in this study covers 31 years period from 1970 to 2001 and was obtained from the Kenya Meteorological Department (KMD), Nairobi, Kenya. Monthly water supply production data for Moi’s Bridge, Lumakanda and Busia water supplies covering 15 years period from 2000 to 2014 was obtained from the County governments of Uasin Gishu, Kakamega and Busia. Rainfall variability and trend was analysed using the parametric test of Linear regression analysis and the non-parametric Mann Kendall statistical test. Monthly rainfall and monthly drinking water production was analysed using Pearson moment correlation to establish the relationship between monthly rainfall and monthly drinking water supply production at Mois Bridge, Lumakanda and Busia Water supplies treatment plants. The results of variability and trend in annual rainfall shows Webuye Agricultural Office recording declining rainfall at -0.8994 mm/31 years (-0.029 mm/ year); whereas Leissa Farm Kitale shows increasing rainfall at 1.0325 mm/31 years (0.033 mm/ year) and Bunyala Irrigation Scheme’s rainfall is increasing at 0.5245 mm/31 years (0.017 mm/ year). Drinking water supply production at Moi’s Bridge, Lumakanda and Busia water supplies has been increasing with time between 2000 and 2014. The results of Pearson moment correlation coefficient shows a strong negative relationship between monthly rainfall and monthly drinking water supply production at 0.05 significance level for Moi’s Bridge, Lumakanda and Busia water supplies. This shows that as rainfall increases, drinking water supply production in treatment plants at Moi’s Bridge, Lumakanda and Busia water supplies decreases. During the rainy season, the cost of water treatment goes up as a result of increased turbidity. Increased rainfall in Nzoia River Basin presents water treatment challenges to the existing water supply treatment plants resulting into reduced production.Water supply managers should improve the capacity of the existing water supply treatment plants to cope with the increased rainfall variability under the changing climatic conditions.

scholarly journals Assessing water supply capacity in a complex river basin under climate change using the logistic eco-engineering decision scaling framework

2018 ◽  
Author(s):  
Daeha Kim ◽  
Jong Ahn Chun ◽  
Si-Jung Choi
Keyword(s):  
Climate Change ◽  
Water Supply ◽  
River Basin ◽  
Performance Metrics ◽  
Large River ◽  
Climate Projections ◽  
Stress Tests ◽  
System Failures ◽  
Logistic Regressions ◽  
The Impact

Abstract. Climate change is a global stressor that can undermine water management policies developed under the assumption of stationary climate, necessitating robust solutions to reducing the risk of system failures for uncertain future climates. While the response-surface-based assessments have provided convenience to explore responsive behaviours of expected system performance to climatic stresses, they were unable to predict the risk of system failures from individual climate projections. In this study, we proposed to use the logistic regressions for evaluating the probability of non-successive outcomes against pre-defined thresholds directly from climate projections, which may be more informative for decision making processes than the expected performances. As a case study, water supply and ecological reliabilities within a large river basin were assessed by combining the eco-engineering decision scaling framework and the logistic regressions. The impact assessment for the South Korean river basin showed that optimal water supply performance at the sub-basins were expected to be satisfactory for the upcoming 20 years of 2020–2039, while the human-demand-only operations could lower the ecological reliabilities. When considering ecological demands in water operations to reduce the ecological vulnerabilities, the stakeholders should accept increasing risks of unsatisfactory supply at the sub-basins with low demands. This study highlights that binary conversions of the performance metrics from the stress tests allow users to measure the risks of system failures varying across sub-components and standpoints with minimal computational costs.

scholarly journals POLLUTION SOURCES OF DRINKING WATER SUPPLY IN THE CROSS-BORDER FLOW

2017 ◽  
pp. 35-37
Author(s):  
A.G. Setko ◽  
U.Z. Zinullin
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Drinking Water Supply ◽  
Environmental Services ◽  
The Caspian Sea ◽  
Cross Border ◽  
Intergovernmental Cooperation ◽  
The Russian Federation ◽  
Safety Of Drinking Water ◽  
The Impact

The results of studying the impact of environmental factors on public sources of drinking water supply, in particular the Ural River, are presented. The analysis of the data system of environmental monitoring carried out by environmental services FGU «Orenburg CGMS» and Kazhydromet as part of intergovernmental cooperation, starting from the border of the Russian Federation, Chelyabinsk and Orenburg regions and ending with the confluence of the Ural River to the Caspian Sea in Atyrau region of Kazakhstan. The comparative evaluation of the quality and safety of drinking water supply in the tenyear dynamics are given.

scholarly journals FEATURES OF GEODETIC MAINTENANCE FOR WATER SUPPLY PROJECTS IN AZERBAIJAN

2018 ◽  
Vol XLII-5 ◽  
pp. 63-67
Author(s):  
M. H. Gojamanov ◽  
C. Z. Gurbanov
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Coordinate System ◽  
Detailed Examination ◽  
Google Earth ◽  
Drinking Water Supply ◽  
Sewerage System ◽  
Large Cities ◽  
Geodetic Measurements ◽  
The Impact

<p><strong>Abstract.</strong> Drinking water supply and sewerage system designing and reconstruction projects are being extensively conducted in Azerbaijan Republic. During implementation of such projects, collecting large amount of information about the area and detailed investigations are crucial. Joint use of the aerospace monitoring and GIS play an essential role for the studies of the impact of environmental factors, development of the analytical information systems and others, while achieving the reliable performance of the existing and designed major water supply pipelines, as well as construction and exploitation of the technical installations. With our participation the GIS has been created in “Azersu” OJSC that includes systematic database of the drinking water supply and sewerage system, and rain water networks to carry out necessary geo information analysis. The system software was developed based on “Microstation” platform, which identifies the coordinate system and cartographic projection along with the geo-referencing through direct connection to Google Earth platform.</p><p> Should be mentioned that, in the country, specifically in large cities (i.e. Baku, Ganja, Sumqait, etc.,) drinking water supply pipelines cross regions with different physico-geographical conditions, geo-morphological compositions and seismotectonics. Therefore, constant control of the plan-height positioning, geodetic measurements for the detailed examination of the dynamics, repetition of the geodetic measurements for certain time intervals, or in other words regular monitoring is very important. During geodetic monitoring using the GIS has special significance. Given that, collecting geodetic monitoring measurements of the main pipelines on the same coordinate system and processing these data on a single GIS system allows the implementation of overall assessment of plan-height state of major pipes.</p>

scholarly journals Transformation of water supply of population and economic objects in the Don River basin for the period of 1990-2018

2020 ◽  
Vol 163 ◽  
pp. 05001
Author(s):  
Alexander Demin ◽  
Anna Zaitseva
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Fresh Water ◽  
River Basin ◽  
Water Bodies ◽  
Drinking Water Supply ◽  
Water Complex ◽  
Current State ◽  
Don River

The analysis of the current state of major water consumers and water complex participants is performed. The data on the increase in centralized water supply of the residential accommodation during 2000-2018 is presented. Significant decrease in the volume of water used for drinking water supply is shown. The improvement of water quality in water bodies of most regions is revealed. The use of fresh water for production needs in the Don River basin decreased from 5.8 to 2.9 km3 from 1990 to 2018. The water circulation coefficient in industry increased from 64 to 85%. The area of irrigated lands in the basin has started to decrease significantly since 1990. In 2000 every second hectare of available irrigated land was watered and in 2016 only every fourth was watered.

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