Introduction - Water Quality Management: Assessment and Interpretation - page 3

of the intricacy of the assessment task and its relation to management (WHO 1987 ),
to offer water quality assessments to governments, the scienti c society and the

public, on the quality of the world s fresh water in relation to human and aquatic

ecosystem health, and global environmental concerns, speci

'

cally:

To describe the rank of water quality;

￿

To spot and quantify trends in water quality;

￿

To de ne the cause of observed conditions and trends

￿

To identify the types of water quality dif culty that happen in speci c geo-

￿

graphical areas; and

To provide the accumulated information and assessments in a form that is for
resource

￿

In other words, water quality management is the management of water quality of
the physical, chemical and biological characteristic of water (Sanders 1983 );
therefore, management and regulatory agencies can use to evaluate alternatives and
make necessary decisions.
This topic consists of six chapters. This chapter includes signi -

nition a few terms of water, and necessary steps for water quality planning; in
Chap. 2 , in the

cance and de

first step the signi cance of appropriate water quality site selection is

de ned and then a summary of Sanders method, Multiple-Criteria Decision Making

(MCDM) and Dynamic Programming Approach (DPA) is described and finally, an
application of the Sanders method for existing water quality monitoring stations in
the K work,

detailed information of National Sanitation Foundation Water Quality Index
(NSFWQI) and British Columbia WQI and two case studies using NSFWQI and
British Columbia WQI. In Chap. 4 , the historical background of using time series, a
summary of Box-Jenkins time series and method of building, diagnostic and pre-
dicting the future of the time series model, as well as a brief explanation of
exponential smoothing and the Winter

ā r ū n River is assessed. Chapter 3 encompasses the previous researchers '

is method is described. Finally, as a practical
exercise, an application of time series model as a case study is depicted. Eventually
in Chap. 5 a summary of arti

'

cial neural network and as a case study is discussed.
In Chap. 6 introduces the deterministic model Ce-Qual-W2 and then two applica-
tions of the model are described. The first application is to study changing of total

dissolved solids in Karkheh Dam in southwest of Iran and the second study is about
K ā r ū in River in Khouzestan province, Iran.

References

Asadollahfardi G (2000) A mathematical and experimental study on the surface water quality in
Tehran. Ph.D. Thesis, University of London, London
Sanders TG (1983) Design for networks for monitoring water quality. Water Resources
Publication, Littleton
WHO (1987) GEMS/WATER operational guide. World Health Organization, Geneva,
Switzerland