Composite Water Quality: Evaluation and Management Feedbacks

2007 ◽  
Vol 42 (1) ◽  
pp. 20-25 ◽  
Author(s):  
Arkadi Parparov ◽  
K. David Hambright
Keyword(s):  
Water Quality ◽  
Water Resources ◽  
Water Resources Management ◽  
Quality Evaluation ◽  
Quantitative Estimation ◽  
Water Quality Evaluation ◽  
Resources Management ◽  
Simplified Procedure ◽  
The Relationship ◽  
Equal Weighting

Abstract In this article we both outline and offer an approach to quantitative estimation of aggregated water quality, in the form of the Composite Water Quality Index (CWQI), calculated as a weighted sum of rating values for a set of preselected water quality indices. The weighting procedure uses variable weights that are inversely proportional to the separate rating values. We also suggest a simplified procedure for estimating the sensitivity of several common algorithms that may be used for CWQI calculations. Among the different methods of CWQI calculation, Smith's minimum operator had the highest sensitivity, while an equal weighting procedure based on the arithmetic mean had the lowest sensitivity. We discuss the relationship between the choice of method for a CWQI calculation and the strategy of water resources management, and show that besides its indicative function, the CWQI should serve as a target of, and tool for, water resources management.

scholarly journals Usos múltiplos da água por usuários outorgados nas bacias hidrográficas dos Rios Aguapeí e Peixe

2021 ◽  
Vol 14 (4) ◽  
pp. 2172-2185
Author(s):  
Fernanda Buono da Silva ◽  
Timóteo Ramos Queiroz ◽  
Denilson Burkert ◽  
Rodrigo Lilla Manzione
Keyword(s):  
Statistical Analysis ◽  
Water Resources ◽  
Water Resources Management ◽  
Rural Areas ◽  
Descriptive Statistics ◽  
Resources Management ◽  
Multiple Uses ◽  
The Right ◽  
The Relationship ◽  
Water Uses

The growing demand for water resources can generate conflicts between different users. To this end, water resources management instruments were implemented, in particular the granting of the right to use, which prioritize the multiple and rational use of water. The work was carried out with the objective of analyzing the profile and the distribution of water uses granted in relation to socioeconomic aspects in the municipalities that make up the Hydrographic Basins Committee of the Aguapeí and Peixe Rivers (CBH-AP). Grant data from 58 municipalities with which descriptive statistics were analysed and prepared for the discussion on the scenario of the multiple uses of water granted. Subsequently, the data were given to the multiple regression statistical analysis, in which the relationship between the number of grants per municipality and its socioeconomic parameters was analyzed. The results demonstrated the grants in the municipalities that comprise an area covered by the Hydrographic Basins Committee of the Aguapeí and Peixe rivers are mainly related to the use of groundwater in rural areas. In the three municipalities (Bastos, Dracena and Tupã) concentrate 26% of the analyzed grants. The increase in MHDI and population, at the same time, stimulates the growth in the number of grants. Thus, there is a need to implement public policies that collaborate directly or indirectly to increase the regularization of water use.

The Underground Water Quality Evaluation from Electrical Logging Data in Sandstone District: A Case Study in Daqing Oil Field

2012 ◽  
Vol 256-259 ◽  
pp. 2424-2430
Author(s):  
Zhao Hui Huang ◽  
Chang Chun Zou ◽  
Zhen Ya Chen
Keyword(s):  
Water Quality ◽  
Apparent Resistivity ◽  
Quality Evaluation ◽  
Underground Water ◽  
Oil Field ◽  
Characteristic Analysis ◽  
Water Quality Evaluation ◽  
Spontaneous Potential ◽  
Daqing Oil Field ◽  
The Relationship

As an important yardstick of water quality evaluation, total dissolved solids (TDS) is strongly correlated with apparent resistivity and static spontaneous potential (SSP) parameters from electrical logging curves.A lot of electrical logging data accumated in the hydrogeologic survey during last decades can be used to predict the underground water TDS. Based on electrical characteristic analysis of sandstone reservoir, taking the influfential factors of the Archie’s Equation and creation mechanism of spontaneous potential (SP) as starting points, the theoretical relationship between the underground water TDS and formation resistivity (Rt) without considering the infuence of the porosity is modeled in this paper, and also the relationship between the underground water TDS and SSP in the same section of drilling well. Utilizing the apparent resistivity logging and static potential logging data, and employing the numerical fitting method, the relationship between groundwater TDS and conductivity is analyzed and determined, finally, the electrical parameters of determining the water quality and the regional evaluation of water quality are expounded in Daqing oil field,songliao plain Quaternary sandstone aquifer.

The effectiveness of water resources management in Pra Basin

Water Policy ◽  
2019 ◽  
Vol 21 (4) ◽  
pp. 787-805 ◽  
Author(s):  
Albert Ebo Duncan ◽  
Nanne de Vries ◽  
Kwabena Biritwum Nyarko
Keyword(s):  
Water Quality ◽  
Water Resources ◽  
Water Resources Management ◽  
Integrated Water Resources Management ◽  
Water Management System ◽  
Resources Management ◽  
Human Resource Capacity ◽  
Government Interference ◽  
Implementation Gaps ◽  
Water Quality And Quantity

Abstract Integrated water resources management (IWRM) has been criticized yet it is the dominant approach to water resources management in developing countries. The criticism emanates from the manifold unfounded assumptions made during implementation on issues such as availability of technology and infrastructure, privatization and sustainable financing, human resource capacity, government interference, etc. The Pra Basin has been implementing IWRM since 2011. The basin houses nine out of the 17 artificial reservoirs constructed in Ghana for drinking water supply. It is therefore prudent that the basin's water resources are given extra management care to ensure sustainable water quality and quantity for growth and development. However, much uncertainty still exists about whether the best water management system is being practiced, whether the system is working well, or needs improvement. This study examines the effectiveness of water resources management in the Pra Basin of Ghana. This study used interviews, field observations, and documents such as Pra Basin IWRM plan, the national IWRM plan, etc., to assess the effectiveness of IWRM in the Pra Basin. The result of the study showed that IWRM although appropriate for the basin had implementation gaps. These gaps are potential contributors to deteriorating water quality.

scholarly journals Assessing water quality for urban tributaries of the Three Gorges Reservoir, China

2018 ◽  
Vol 9 (1) ◽  
pp. 105-114 ◽  
Author(s):  
Senlin Zhu ◽  
Abazar Mostafaei ◽  
Wenguang Luo ◽  
Benyou Jia ◽  
Jiangyu Dai
Keyword(s):  
Water Quality ◽  
Water Resources ◽  
Water Resources Management ◽  
Three Gorges Reservoir ◽  
Three Gorges ◽  
Resources Management ◽  
The Three Gorges Reservoir ◽  
The Three Gorges ◽  
Ccme Wqi ◽  
Assessment Results

Abstract Water quality assessment is essential for water resources management. This paper presents a comprehensive evaluation of water quality conditions in three urban tributaries of the Three Gorges Reservoir, China. The Canadian Council of Ministers of the Environment Water Quality Index (CCME-WQI) and Nemerow Pollution Index (NPI) approach were used in this study. Generally, the assessment results of the NPI approach are consistent with that of the CCME-WQI approach. However, the NPI method overemphasized the influence of the most serious pollutant factor, and thus this method should be used with caution for water resources managers. The CCME-WQI values indicated that the water quality conditions in the Wubu River were quite good during the period 2013–2015. Water quality conditions in the upstream sections of Yipin and Huaxi River are good. However, when the river drains through urban areas, water quality conditions greatly deteriorate due to the excessive release of household and municipal sewage, and industrial wastewater, especially for Huaxi River. Thus, waste water management becomes more and more imperative in urban regions of China. Meanwhile, assessment results indicate that the CCME-WQI approach can provide a reference for decision-makers on water resources management.

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