Salinity Intrusion and Seasonal Water Quality Variations in the Tidal ...

As Figure 3.198 depicts water quality declines when dry days become established. In
June the WQI reaches its possible best thanks to the dynamism imparted by runoff.
Panar was found to have quality characteristics a little better than other potential fresh
water sources because it receives little or no urban discharges.
Table 3.86 Water quality index of the fresh water canals in March and June 2004
Name ofthe freshwater stretch WQI in March 2004 WQI in June 2004
Adimury thod 34.90 40.4
Changadompokk thod(KSEB Kaloor) 26 40
Chithrapuzha (above FACT) 31 37
Edappally thod (north ofAttipeti nagar) 30 45.2
Karingachira puzha 36.8 41
Panar 53.9 49.3
Karanakkodam thod (VIP road) 32 40.4
\Thevara canal (northern end) 39.6 43.2
\Perandoor canal (south end) 34.1 38.2
3.5 Observed Characteristics ofWater Chemistry in the Canals
Table 3.89 uses phosphate concentration as a key to decide the nutrient pollution in a
static water body. All the canals monitored in the study, at this rate are at various
stages ofeutrophication.
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