• Praveena M
• S. Santhosh

Water quality parameters (water temperature, pH, EC, Turbidity, TDs, Salinity, Nitrite, Nitrate, phosphate, DO, BOD) of Kappil backwaters of Thiruvananthapuram district of Kerala state was monitored form six selected stations for a period of one year (June 2015 to May 2016). Significant spatial variation in the distribution of physico-chemical properties was noticed in between all sampling stations. Average mean value of pH in the backwater system was recorded (6.43±1.04). Acidic nature of water was noticed in three stations throughout the period of study. Highest annual average value electrical conductivity was noticed in the bar mouth (station I) of the estuary (23.31±3.38) Both total dissolved solids and salinity was also recorded maximum values in station I. Maximum annual average turbidity value was observed in station VI (7.14±0.56). Nutrient parameters gained highest values in station IV. Annual average DO values found dangerously low in station IV (4.39±0.38) and Station V gained maximum value (9.51±0.48). The current study has revealed the striking difference in the distribution of water quality parameters and the degradation level of a tropical estuarine ecosystem on the south-west cost of India.

Kappil backwaters, physico-chemical parameters, nutrients

"Water quality analysis of Kappil backwaters ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.304-313, May-2019, Available :http://www.jetir.org/papers/JETIR1905L41.pdf

"Water quality analysis of Kappil backwaters ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp304-313, May-2019, Available at : http://www.jetir.org/papers/JETIR1905L41.pdf