The source of the River Thames has dried up further downstream than ever before, as England looks set to enter a drought that some experts say the country is unprepared for.

Areas downstream from six dams have been warned of possible flooding, river overflowing and landslides due to the deluge of water being released from the brimming reservoirs, Disaster Prevention and Mitigation Department (DPMD) chief Chayapol Thitisak said on Tuesday.