MATERIALS AND METHODS
An integrated study of physical, chemical and biological components of the lakes was done to determine the health of the waterbodies. The monitoring was done for a period of two months, January and February 2006. The sampling was done in the morning hours from five sites in Chamarajasagar reservoir and six sites in Madiwala Lake. The sampling sites were selected to represent the water quality at different points, the inlets – points where the feeder opens into the lake, centre – the point which represents a general water quality of the lake and the outlets – the place where the overflow occurs.
Grab samples were collected in one-litre pre washed polythene cans from the surface from each station in the morning to assess various physico-chemical parameters. Two field replicates were collected from each station. Few parameters, which undergo changes quickly such as temperature, pH, DO, conductance along with alkalinity, hardness and TDS, were evaluated on the spot at the field immediately after collection. The analysis was done based on APHA, standard methods (1985) and NEERI, water and wastewater analysis (1986). The various physical and chemical parameters that were anlaysed in the current study are: Temperature, pH, conductivity, Total dissolved solids, Alkalinity, Total hardness, Calcium, Magnesium, DO, COD, Sodium, Potassium, Phosphates, Nitrates. |
