scholarly journals Editorial for the Special Issue “Remote Sensing of Water Quality”

2019 ◽  
Vol 11 (18) ◽  
pp. 2178
Author(s):  
Wesley J. Moses ◽  
W. David Miller
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
Water Resources ◽  
Water Bodies ◽  
Special Issue ◽  
Coastal Regions ◽  
Inland Water ◽  
Quality Of Water ◽  
Inland Water Bodies

The importance of monitoring, preserving, and, where needed, improving the quality of water resources in the open ocean, coastal regions, estuaries, and inland water bodies cannot be overstated [...]

scholarly journals Identification of Potential Surface Water Resources for Inland Aquaculture from Sentinel-2 Images of the Rwenzori Region of Uganda

Water ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 2657
Author(s):  
Athanasius Ssekyanzi ◽  
Nancy Nevejan ◽  
Dimitry Van der Van der Zande ◽  
Molly E. Brown ◽  
Gilbert Van Van Stappen
Keyword(s):  
Remote Sensing ◽  
Surface Water ◽  
Water Resources ◽  
Image Resolution ◽  
Water Bodies ◽  
Inland Water ◽  
Surface Water Resources ◽  
Moderate Resolution ◽  
Sentinel 2A ◽  
Inland Water Bodies

Aquaculture has the potential to sustainably meet the growing demand for animal protein. The availability of water is essential for aquaculture development, but there is no knowledge about the potential inland water resources of the Rwenzori region of Uganda. Though remote sensing is popularly utilized during studies involving various aspects of surface water, it has never been employed in mapping inland water bodies of Uganda. In this study, we assessed the efficiency of seven remote-sensing derived water index methods to map the available surface water resources in the Rwenzori region using moderate resolution Sentinel 2A/B imagery. From the four targeted sites, the Automated Water Extraction Index for urban areas (AWEInsh) and shadow removal (AWEIsh) were the best at identifying inland water bodies in the region. Both AWEIsh and AWEInsh consistently had the highest overall accuracy (OA) and kappa (OA > 90%, kappa > 0.8 in sites 1 and 2; OA > 84.9%, kappa > 0.61 in sites 3 and 4), as well as the lowest omission errors in all sites. AWEI was able to suppress classification noise from shadows and other non-water dark surfaces. However, none of the seven water indices used during this study was able to efficiently extract narrow water bodies such as streams. This was due to a combination of factors like the presence of terrain shadows, a dense vegetation cover, and the image resolution. Nonetheless, AWEI can efficiently identify other surface water resources such as crater lakes and rivers/streams that are potentially suitable for aquaculture from moderate resolution Sentinel 2A/B imagery.

Management and Status of Japanese Public Waters

1991 ◽  
Vol 23 (1-3) ◽  
pp. 1-10 ◽  
Author(s):  
Takeshi Goda
Keyword(s):  
Water Quality ◽  
Coastal Waters ◽  
Industrial Wastewater ◽  
Quality Standards ◽  
Water Bodies ◽  
Industrial Wastewaters ◽  
Quality Of Water ◽  
Japanese Rivers ◽  
Per Capita

The management and status of public water bodies in Japan is discussed. The environmental quality standards which have been set and the levels of compliance with these standards are shown. The water quality of Japanese rivers, lakes, reservoirs, wetlands and coastal waters is described, and eutrophication problems are mentioned. The effects of changes in population density and levels of recycling of industrial wastewaters on the quality of water bodies are discussed. Almost 75% of industrial wastewater is now recycled. Per capita availability of freshwater in Japan is comparatively low, and the construction of 530 dams, in addition to the 2393 dams already in operation, is planned. Irrigation effluents from paddy fields are a major factor which influences river water quality in Japan. The improvement of water quality using various methods is discussed.

scholarly journals Water Quality of Freshwater Ecosystems in a Temperate Climate

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2643
Author(s):  
Piotr Klimaszyk ◽  
Ryszard Gołdyn
Keyword(s):  
Water Quality ◽  
Freshwater Ecosystems ◽  
Temperate Climate ◽  
Special Issue ◽  
Quality Of Water ◽  
Local Water ◽  
Water Ecosystems ◽  
The Individual ◽  
The Impact

Water is the substance that made life on Earth possible. It plays a key role in both the individual and population development of all species. Water is also a critical resource for humans as populations continue to grow and climate change affects global and local water cycles. Water is a factor limiting economic development in many regions of the world. Under these conditions, good water quality becomes an extremely important factor that determines its economic utility, including water supply, recreation, and agriculture. Proper water quality maintenance of freshwater ecosystems is also very important for preserving biodiversity. The quality of water depends on many factors, the most important of which are related to human impact on water ecosystems, especially the impact of various pollutants from municipal economy, industry and agriculture. Hydrotechnical changes, such as river damming, drainage processes and water transport between catchments also have a significant impact. Water quality is also dependent on the impact of natural conditions connected, e.g., with climate, catchment, water organisms and their interactions within the food-webs, etc. This Special Issue consists of fourteen original scientific papers concerning different problems associated with the water quality of freshwater ecosystems in a temperate climate. Most of the articles deal with the relations between water quality and the structure of ecosystem biocenoses. The conclusion of these articles confirms the fact that the deterioration of water quality has a direct impact on the quantitative and qualitative structure of biocenoses. This is accompanied by a decline in biodiversity and the disappearance of rare plant and animal species. They also draw attention to the particular importance of internal physical and chemical differentiation within the aquatic ecosystem, both in horizontal and vertical dimensions. The problem of ensuring proper ecological conditions and good quality of water in freshwater aquatic ecosystems is also raised, and methods for the restoration of water bodies are presented. The majority of the research presented in this Special Issue was carried out in Central Europe, and one of the papers concerns the area of West Africa—the edge of temperate climate zone.

scholarly journals Quality of water resources in the Niger basin and in the region of Lagos (Nigeria)

2017 ◽  
Vol 13 (1) ◽  
pp. 51-60 ◽  
Author(s):  
Olusegun Adeaga ◽  
Gil Mahe ◽  
Claudine Dieulin ◽  
Francoise Elbaz-Poulichet ◽  
Nathalie Rouche ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Resources ◽  
Trace Element ◽  
Quality Standards ◽  
Water Type ◽  
Metal Concentrations ◽  
Quality Of Water ◽  
Sampling Locations ◽  
Trace Element Contamination

AbstractWater quality studies in Nigeria are usually conducted at local scales and limited to a restricted number of chemical contaminants, while reliable data on trace metal concentrations (including arsenic) are relatively scarce. This study focuses on the quality of available renewable water resources in terms of major ion and trace element concentrations at selected sampling locations in the Lower River Niger basin and part of the Lagos region. A screening of water contamination by arsenic and heavy metals was carried out through water sampling at selected locations using in situ measurement and laboratory testing to estimate heavy metal concentrations and water type. The analysis reveals moderate trace element contamination of the water resources, with the exception of Pb, while Mn and, to a lesser extent, Al exceeded WHO quality standards, but the Arsenic concentrations are within drinking water quality standards and are safe for consumption and irrigation, while the water type is Bicarbonate.

scholarly journals Physicochemical assesment of Khelna reservoir water from Aurangabad District of Maharashtra

2021 ◽  
Vol 4 (3) ◽  
pp. 174-177
Author(s):  
M J Jadhav ◽  
J H Sawdekar
Keyword(s):  
Water Resources ◽  
Physicochemical Parameters ◽  
Water Bodies ◽  
Normal Range ◽  
Reservoir Water ◽  
Regular Monitoring ◽  
Drinking And Irrigation ◽  
Quality Of Water ◽  
Irrigation Purpose

Present study deals with the physicochemical assesment of Khelna reservoir water. Life in water depends upon the physicochemical conditions prevailing in that water. A total of 20 parameters were analyzed at seasonal intervals. Results of present study reveals that all selected physicochemical parameters were found in normal range as per the guidelines of WHO. The water is potable and safe for drinking and irrigation purpose. In order to maintain better quality of water, regular monitoring of quality of water and protection and conservation of water bodies is required. A proper awareness among society has to be created about protection and conservation of water resources.

scholarly journals Resource-Efficient Methods to Facilitate the Preservation of a Reservoir's Self-Cleaning Potential

2022 ◽  
Author(s):  
Vitaliy V. Chelnokov ◽  
Aleksey V. Matasov ◽  
Elena Zabolotnaya ◽  
Anna S. Makarova ◽  
Andrey N. Glushko
Keyword(s):  
Water Quality ◽  
Water Body ◽  
Water Bodies ◽  
Environmental Condition ◽  
Environmental Preservation ◽  
Quality Of Water ◽  
Self Cleaning

The aim of this research was to develop environmental methods for the restoration and rehabilitation of Moscow’s water bodies. A number of methods are recommended. These can help to improve the environmental condition and water quality of water bodiesin Moscow. Keywords: ehabilitation of water body, engineering biology, environmental preservation

scholarly journals The Quality of Water Resources as a Factor of Regional Strategizing

2019 ◽  
pp. 143-153
Author(s):  
Natalya Kosolapova ◽  
Lyudmila Matveeva ◽  
Olga Chernova
Keyword(s):  
Water Quality ◽  
Economic Development ◽  
Water Resources ◽  
Water Quality Management ◽  
Water Quality Monitoring ◽  
The State ◽  
Water Users ◽  
Quality Of Water ◽  
Social And Economic Development

The purpose of this article is to study the processes of water quality management, which are considered as the main factor of the strategic social and economic development of the region and also to form tools supporting this process. The article analyzes the state and development trends of the water sector of the Rostov region from the standpoint of solving the problems of its strategic social and economic development. The authors demonstrate the possibility of intellectualization of regional strategizing processes through the use of water quality monitoring of the knowledge of experts with the use of fuzzy logic. The review of existing approaches to the assessment of water resources quality is given. It is shown that these approaches do not take into account the different requirements of water users to the content of chemicals and compounds in the water but assess the state of water resources in terms of conformity of concentration indices of polluting substances to maximally allowable concentrations. The authors suggest assessing the quality of water resources in compliance with the criteria of the contamination of water resources set for every category of water users. The approach proposed by the authors implies the assessment of water quality in two modes – differentiated and complex. Meanwhile, the suggested tools are universal and can be used in the systems of regional strategizing of the use of various water basins. A conceptual representation of the structure of the management system of water resources quality in the region within the system of regional strategizing is formed and the main problems of its development are identified.

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