(i) Fresh water bodies with streams
(ii) Phenyl or foamy turbid water
(iii) Presence of adequate amount of oxygen in water
(iv) Heavy rain with thunder
(v) Upstream hill slopes
(vi) Water temperature 24-28 degree centigrade
(vii) River bends
(viii) Fluctuation of water
(ix) Monsoon and Amavasyaba Purnima Tithi.