The Army and Air Force services have been requisitioned while the death toll due to rains has crossed 30 after one person was killed in a wall collapse in Anand district on Wednesday night, sources said.

Chief Minister Narendra Modi who was expected to carry an aerial survey of the worst affected areas has not been able to do so owing to bad weather, official sources said.

The state government has already evacuated more then 30,000 people across the state after rainwater flooded their habitats.

"Heavy rains have been reported from Anand, Kheda and Vadodara districts and the army has been requisitioned. Several people who were stranded in Adala in Ahmedabad and Surendranagar district overnight have been rescued this morning even though the rain water in these areas has not subsided," state relief commissioner Rajesh Kishore said.

Reports from Vadodara, one of the worst rain-affected districts, said 10,000 people from low-lying areas of the city have been shifted to safer places following heavy rains in the catchments area of Vishwamitri and Wante rivers and more could be shifted if the water levels continue to rising.

The Pratapura Sarovar reservoir and the Ajwa lake are overflowing and people living in the vicinity have been alerted to shift to safer places.

The situation in Amreli district also turned grim with heavy rains being reported overnight in Khambha, Sabarkundla and Rajula talukas while the highest rainfall was recorded from Dangs district at 359 mm.

Officials also managed to rescue five passengers, who were stuck overnight in a state transport bus in Amreli district after rain water blocked roads completely.

Constant downpour has also affected road traffic in more than 500 routes including two national highways and efforts were on to clear the roads for smooth traffic flow.