The scope and details of the Flood Risk Assessments will vary depending on the size and topography of the site, and which Flood Zone the site lies within.
The flood zone for a sites are obtained from the Environment Agency and Local Authority Strategic Flood Risk Assessment which are defined as Flood Zone 1 to Flood Zone 3, and the site areas being defined as more or less than 1 hectare.
(Flood Zone 1 is has 1 in 1000 (0.1%) or less annual probability of flooding, Flood Zone 2 has between 1 in 1000 (0.1%) to 1 in 100 (1%) annual probability of flooding, and Flood Zone 3 has more than a 1 in 100 (1%) annual probability of flooding).