Heavy rains over past few days have caused Krishna and Panchaganga rivers to swell in Sangli and Kolhapur districts respectively.
Gadchiroli District Disaster Management Officer (DDMO) Krishna Reddy said while flood-like situation prevails in Bhamragad, the situation in other 11 tehsils is under control.
Brihanmumbai Municipal Corporation (BMC) on Wednesday declared that schools under its jurisdiction will be used as shelters for housing people stranded due to rain.
From the past few days, Raigad and other nearby regions have been receiving incessant rainfall leading to an increase in water level.
Heavy rains and floods battered several areas of western Maharashtra and the Konkan region earlier this month, with Kolhapur and Sangli districts bearing the maximum brunt.
Out of the five districts that fall under the administrative division, Sangli and Kolhapur were badly affected by floods in the second week of August.
In Shirol tehsil, the MI-17 helicopter dropped 12 tones of relief material including food and water in 15 villages which were still marooned on Tuesday, said a district official.
The Mumbai-Bengaluru National Highway (NH-4), which was closed since the last six days due to flooding, was partially opened for traffic in Kolhapur district.
The first gate of the project was lifted at 7.40am on Monday and following that phase-wise more gates opened with the tenth gate being opened at around 10 am.
More than five lakh cusec of water is being discharged from Almatti dam on the Krishna river in Karnataka to ease the flood situation in western Maharashtra.
While the overall situation, especially in Kolhapur and Sangli, improved slightly on Saturday, evacuation of people from flooded areas continued.
Although the overall situation has improved slightly, the operation to evacuate the flooded areas and moving stranded people to safer locations and providing relief to them is still on.
The water level of the Godavari has risen but it is flowing within its banks, irrigation officials said.
The NCP also said all public representatives of the party will donate one month's salary for flood relief.