This map highlights how many residential addresses are at risk of surface water flooding using three probabilities: 1 in 30 per year risk (3.3% risk each year), 1 in 100 per year risk (1% risk each year) and 1 in 1,000 per year risk (0.1% risk each year). ‘1 in 30' being the most at risk, and '1 in 1000'...