Total 6370 people have been shifted to the safer places, out of which 3400 people in Surendranagar district alone.
"Interacted with Professor Yash Pal extensively on many occasions including the National Children's Science Congress in Gujarat in 2009", the P M said in a condolence message.
The flooding has affected Banaskantha, Sabarkantha, Anand, Patan and parts of Valsad districts in Gujarat.
The state government has dispatched one Odisha Disaster Rapid Action Force team each to the northern Keonjhar and Bhadrak districts, as overflowing rivers pushed several places to the brink of floods. Two Air Force choppers has also been kept on stand-by to evacuate people.
North Gujarat, especially Banaskantha district, received heavy rain since Sunday night.
The military was yesterday called in to help in relief and rescue operations in some districts of Gujarat and Rajasthan after copious rains caused floods, leaving thousands of people marooned, officials said.
Prime Minister Narendra Modi will undertake an aerial survey of the flood-affected areas of Gujarat, where around 33,000 people had to be evacuated over the last 24 hours. Rupani also conducted an aerial survey of Sundernagar. However, 19 state highways as well as 102 internal roads in various parts of state are still closed due to waterlogging. Chief Minister Vijay Rupani reviewed rescue operations after a meeting with officials at the state disaster control room.
Gujarat has so far received nearly 56.61 per cent of the total expected rainfall. Since June 2017, 70 people have died in the state due to rain related incidents.
Several parts of South Rajasthan also reeled from flood like situation.