At least 10 villages of Dhal Char union and Monpura union under Char Fasson upazila of Bhola went under water due to tidal surge caused by depression in the Bay of Bengal on Thursday.   Dhal Char union parishad chairman Abdus Salam said at least 1,500 people of his union remained marooned for eight hours from morning to afternoon. The tidal water rose to 4-5 feet high and washed away many houses, shops and fish farms, Salam said. He, however, doesn't know the amount of the affected properties and cattle. On the other hand, Purbo Andirpar, Panschim Andirpar, Kawartek, Ishwarganj, Kulagazi Taluk village of Monpura union, Dasherhat, Sonarchar, Char Jatin, Char Gyan of Hajirhat union and Alamnagar and Mastarhat area of Uttar Sakuchia union were inundated by the tidal surge. Besides, Char Khalek, Machhuakhali, and Kolatoli villages under the recently declared Kolatoli union went under seawater. Moreover, more than 20000 people of Char Nizam, Badnar Char, Dhal Char, and Char Samsuddin have been marooned.   A depression over coastal Odisha and the adjoining Northwest Bay moved westwards and weakened into a well-marked low on Wednesday. Read: Depression in Bay: Avoid Cox’s Bazar beach, say tourist police On Thursday, the well-marked low over Chhattisgarh and adjoining areas of India moved westwards, weakening into a low pressure area over Madhya Pradesh and adjoining areas. Steep pressure gradient persists over the North Bay and adjoining coastal areas of Bangladesh. Squally weather may affect the maritime ports, the North Bay and the adjoining coastal areas of Bangladesh, said a Met office bulletin.