Prediction and
WQI Assessment of Ganga River Sustainability by Box-Jenkins (ARIMA) model Approach
Jain Smita and Bundela Beena
Res. J. Chem. Environ.; Vol. 29(3); 20-25;
doi: https://doi.org/10.25303/293rjce020025; (2025)
Abstract
Box-Jenkins (ARIMA) modelling approach for analysing the status of Water Quality
of the Ganga River at Haridwar City of Uttarakhand, India was studied for understanding
the Ganga River sustainability. The aim of the model was to predict future values
of the series. Quality assessment of river water and prediction were done based
on various water pollutants like pH, Dissolved oxygen (DO), Total Coliform, Chloride,
Calcium, Magnesium, Hardness and Total Dissolved Solids (TDS).
Monthly data were collected for five years (2017-2021). Water Quality Index (WQI)
and ARIMA model were reviewed. The WQI (Water Quality Index) of Ganga River was
found more than 50 in almost all the months for five years (2017-2021). That shows
that the river is polluted in most of the months. The Ljung-Box statistics gave
nonsignificant p-value for 45 degrees of freedom and with 95% accuracy interval
since the lag 48's p-value is higher than 0.05.
