DEVAPRIYA MK (STM19CE009)
FATHIMATH SAHALA P(STM19CE010)
GOKUL PRAMOD (STM19CE011)
JINSHA MG ( LSTM19CE035)

Surface water quality has special significance and needs great attention of all concerned since
it is the major alternative source of domestic, industrial, drinking and irrigation. The presence
of various pollutants from human activities such as agriculture, industry, construction,
deforestation, etc. lead to deterioration of both surface water quality and aquatic life. Water
Quality Index has been calculated and thematic maps of the same were also developed. The
results of the water quality analysis work were presented in the form of maps which can be
used for better understanding of the present water quality scenario of the study areas. In this
study, we selected 3 rivers named Anjarakkandy river, Thalassery river and Mahi river thatis
most affected by pollution in Kannur district. The WQI and weighted overlay maps are
created from the spatial distribution layers of five water quality parameters. Quality analysis
of drinking water from water quality index, spatial distribution maps of individual water
quality parameters and overlay map were found for the stress zones. Samples collected were
analysed for pH, Chloride, DO, BOD and COD. The obtained values were evaluated and
compared with standard permissible limits. An effective model to determine surface water
quality prepared with the help of remote sensing techniques.