does the river has any religious significance?
Yes, the waters are purifying and wash away sins.
Ganges
 By the 5th century CE, an elaborate mythology surrounded the Ganges, now a goddess in her own right, and a symbol for all rivers of India. Hindu temples all over India had statues and reliefs of the goddess carved at their entrances, symbolically washing the sins of arriving worshippers and guarding the gods within. 
what do you call ice falling from the sky Hail or sleet. how is it formed? In strong thunderstorm clouds,with intense updrafts, high liquid water content, great vertical extent, large water droplets, and where a good portion of the cloud layer is below freezing . what can be the size of this solid sleet? Their size is determined by measuring their diameter with a ruler or comparing them to coins. can they cause serious damage? Yes, to automobiles, aircraft, skylights, glass-roofed structures, livestock, and crops any incident related to the damage cause by this natural phenomenon? One of the earliest known incidents occurred around the 9th century in Roopkund, Uttarakhand, India. how did the state mentioned above get its name? From the Sanskrit words "uttara" meaning 'north', and "khaṇḍa" meaning 'land', altogether simply meaning 'Northern Land'. is there any pilgrimage site in the place mentioned? Yes, at Badrinath and Kedarnath. which are the different mode of transport in this state? Roadways, railways and airways. does the place have major rivers? Yes, the Ganges and Yamuna. from where does the first river begin its course? Gangotri Glacier. what marine creature likely to found there? It has been estimated that about 350 fish species live in the entire Ganges along with crocodiles, turtles and dolphins.
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Ganges [SEP] Ganges in classical Indian iconography
Although she has provided sustenance to millions, she has also brought hardship, injury, and death by causing major floods along her banks. The goddess Ganga is also accompanied by a dwarf attendant, who carries a cosmetic bag, and on whom she sometimes leans, as if for support. (See, for example, frames 1, 2, and 4 above.)