PPS 15 Planning and Flood Risk (Revised)·Page 48·6.61
Presumption Against Development in High Hazard Flood Risk Areas
There is a presumption against development where flood risk assessments indicate unacceptable combinations of depth and velocity, particularly near reservoir impoundments where flood waves have short lead times and greater water depths and velocities.
There will be a presumption against development in areas where the Flood Risk Assessment indicates that there is a likelihood of an unacceptable combination of depth and velocity. In many situations this may be in locations close to the reservoir impoundment, where, in the event of a reservoir flood event, such areas may be subjected to flood waves that have very short lead in times with greater water depths and higher velocities than elsewhere within the flood inundation area.
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