Results 331 to 340 of about 2,609,914 (372)

Consumers Water Quality Index

Journal of the Environmental Engineering Division, 1974
A water quality index based on physical, chemical, and biological parameters is proposed. The index is based on a geometric mean of transformed values of the parameters with a range of zero to one. The parameters of concern are temperature, nutrients, suspended solids, turbidity, coliform bacteria, dissolved oxygen, color, pH, grease, odor, and ...
Frank L. Parker, Thomas M. Walski
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Stochastic water quality index

Environmental Technology Letters, 1982
Abstract A Stochastic Water Quality Index (SWQI) is proposed and its use in assessing water quality in the Linggi River in Malaysia is shown. The SWQI provides for the first time an approach for developing an index which incorporates the probabilistic water quality entities.
B. N. Lohani, Norhayati Mustapha
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Water Quality Indexing and Scoring

Journal of the Environmental Engineering Division, 1980
The desirability of developing water quality indices, which has been frequently cited, is examined. The development of currently available indexes are reviewed and a distinction is made between the indexing and scoring of water quality samples. It is pointed out that many indexes are, in fact, scoring methods, and that the mathematical basis for the ...
Roy O. Ball, Richard L. Church
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Water Quality Index and Status

2011
This chapter includes a methodology for determining the water quality status of a river. The water quality of the Yamuna River is described using indirect and direct methods. The indirect method is based on various water quality indices (WQI), whereas the direct method uses water quality data at various locations on the river.
C. Shekhar P. Ojha, Raveendra Kumar Rai, Vijay P. Singh, Alka Upadhyay   +3 more
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Integration of water quality index with GIS

AIP Conference Proceedings, 2021
In Tamil Nadu the demand for water is geometrically increasing in day today life. Ground water resources play a major role to meet the increasing demand. Krishnagiri is one of the districts which depends more on ground water for farming domestic use and industrial purposes. Many industries are situated in Hosur/Krishnagiri industrial belt.
S. Kishore, K. Santhosh Kumaar, P. S. Kothai, V. S. Meha Subha, A. S. Karthikeyan   +4 more
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Development of a water quality loading index based on water quality modeling

Journal of Environmental Management, 2009
Water quality modeling is an ideal tool for simulating physical, chemical, and biological changes in aquatic systems. It has been utilized in a number of GIS-based water quality management and analysis applications. However, there is considerable need for a decision-making process to translate the modeling result into an understandable form and thereby
Kyehyun Kim, Tao Song
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Proposal for a new water quality index [PDF]

SIL Proceedings, 1922-2010, 1998
(1998). Proposal for a new water quality index. SIL Proceedings, 1922-2010: Vol. 26, No. 5, pp. 2449-2451.
N. Menegon Menegon, P. A. Zagatto, L. S. N. Perez, M. L. Lorenzetti, S. V. Buratini   +4 more
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Describing Water Quality with Aggregate Index [PDF]

Journal of Environmental Engineering, 2000
Alternative efforts to describe water quality by an aggregate index consisting of subindices of the constituent quality variables are examined. Ambiguity problems exist where all the subindices are acceptable and yet the overall index is not. Eclipsing problems exist where the overall index is insensitive to a single variable; such insensitivity is ...
Aditya Tyagi, Prabhata K. Swamee
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Groundwater quality and water quality index at Bhandara District

Environmental Monitoring and Assessment, 2010
The present investigation reports the results of a monitoring study focusing on groundwater quality of Bhandara District of central India. Since, remediation of groundwater is very difficult, knowledge of the existing nature, magnitude, and sources of the various pollution loads is a prerequisite to assessing groundwater quality.
D. H. Tambekar, P. N. Rajankar, Satish R. Wate   +2 more
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Water quality evaluation by index in Dalmatia

Water Research, 1999
This article describes the process of determining the water quality index for Dalmatian County waters as well as the results of the application of the index for water evaluation in Dalmatia for a three year period (1995, 1996, 1997). WQI includes the following nine parameters:temperature, mineralization, corrosion coefficient, K, dissolved oxygen ...
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