According to the
Palmer’s algal index all the lakes are categorized as
organically polluted. One of the well developed
technique for detection of organic pollution is the
OMNIDA GB 5.3 soft ware. This software uses only
diatoms for the detection of organic pollution. It
can also suggest the levels of degradation in any
water body and as well detect which diatoms are
autochathonous and which are
allocathonous.Diatoms remain as benthic or
epiphytic forms and can serve as good indicators
of organic pollution.