1. 2 nd Generation Flood Map Tim Jolley (Head of Hydrology, SEPA) Flooding Issues and Advisory Committee 21 April 2005 Scottish Executive

2. Purpose A strategic map of flood hazard that will: Provide a first estimate of flood hazard Support the implementation of SPP7 Raise awareness of flood risk Allow resources to be prioritised

3. Scope  Map to cover mainland Scotland & Islands  Catchments >3km 2  Fluvial and coastal flood envelopes 0.1%, 0.5%, and 1%  Areas that benefit from flood defences  Produced using a consistent, recognised hydrological modelling methodology  Public access via the internet

4. Assign flow points to DRN

5. Abstract cross- sections and assign roughness

6. Overlay flows and cross-sections and calculate depth

7. knowledge Judgement Experience Validated using flood event data..

8. The published map..

9. DISCLAIMER Please note that these maps only show the predicted likelihood of flooding from rivers or the sea for defined areas, and are not detailed enough to account for precise addresses. Individual properties therefore may not always face the same chance of flooding as the areas that surround them. There may also be particular occasions when flooding occurs and the observed pattern of flooding does not in reality match the predicted patterns shown on these maps. For Further Information visit www.sepa.org.uk