Trend Analysis For Irrigation
Water Quality In Egypt
Author(s)
R. M. S. El Kholy & M. I. Kandil
Abstract
The quality of water affects the quality of life – as concerns over water quality
problems increase, scientists and engineers are required to interpret available
data and disseminate information. Water quality data analysis enables the
assessment of constituents, determination of trends or correlations and thus
supporting water management. This scrutiny uses prevalent trend detection
techniques to evaluate the canals subject to irrigation purposes in Egypt. It
presents the results of the irrigation water quality analysis for selected water
quality parameters in four vital canals covering the irrigation system in the
Eastern Nile Delta region.
The aim of this investigation is to identify short-term water quality trends in
Egyptian canals and to develop a methodology for assessing future water quality
trends.
According to the national water quality-monitoring network, data from five
years (Aug.1999–Jul. 2004) of monthly basis records was examined. The internal
structure of the water quality data sets and the correlation between locations was
studied using the correlation coefficient matrix. Cluster analysis was used to
encompass a wide range of multivariate methods, which results in the grouping
of similar sampling sites. The results showed a strong correlation between
consecutive locations in El-Salam Canal without drainage outfalls in between
and among all consecutive locations in El-Rayah El Tawfiki and Ismailya
Canals.
Trend evaluation was conducted using the best-fitted trend models which
revealed that the linear model better describes the DO correlation while the
exponential model better describes the TDS correlation between locations in the
El-Salam Canal.
Keywords: water quality, irrigation, trend, time series correlation, regression.
Keywords
water quality, irrigation, trend, time series correlation, regression.
Related Book
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