Velocity

Indicates the speed of flood water and the direction in which it is travelling within Potentially Vulnerable Areas (PVAs).

Velocity direction is available only within the river flood maps. It is sampled at a 150m resolution therefore cannot be used to identify detailed flow pathways. The velocity displayed on the river flood map shows the general speed and direction of flood water over a set distance at the scale limitations set by the published flood maps.

Some areas are coloured grey where we do not have sufficient information to show velocity on the map at this time. This layer is best viewed with reference to the PVA layer.