Measurement of some chemical
properties of water was done by the method
of Eaton et al. [8]. Dissolved oxygen (DO)
and BOD5 were measured using the azide
modification method. Alkalinity was measured
by phenolpthalein methyl orange indicator
method. Concentrations of nutrients, i.e.
ammonia-nitrogen, nitrate-nitrogen and
soluble reactive phosphorus (SRP) were
determined in the laboratory by nesslerization,
cadmium reduction and ascorbic acid
methods, respectively.