Flood warnings for River Thames and River Kennet West Berkshire Council says it 'can be highly dangerous' Liam Headd '); A NUMBER of flood warnings and alerts have been put in place for parts of West Berkshire as a result of high water levels and recent rainfall. According to the Gov.uk website, property in the Purley area is expected to flood as river levels continue to rise slowly on the River Thames due to heavy rainfall. The Government's Flood Information Service says: "Our incident response staff are operating weirs to reduce flood risk. "Please remain safe and aware of your local surroundings, activate any property flood protection products you may have, such as flood barriers and air brick covers, and refer to the 'River and Sea levels in England' webpage for current river levels."