Policy information sourced from Barnet Colindale AAP 2010

6.4 Flood Risk

Sites within Flood Zone 1 over 1ha, all sites within Flood Zone 2 and 3 and sites with critical drainage issues require site specific Flood Risk Assessments (FRAs) in accordance with Planning Policy Statement 25. The FRA will have regard to the Strategic Flood Risk Assessment and the Outline Surface Water Strategy carried out for the AAP. Water efficiency initiatives will be included in all new development.

Planning permission for residential development on sites wholly or partly within the existing flood zone of the Silk Stream (Flood Zone 2, 3 and 3b) will not be granted. For development of non-residential uses on sites that might lie partly in Flood Zone 2 or 3, the sequential approach should be carried out on site to design the development so that buildings and vulnerable uses are kept outside of the flood zones and that the area affected by Flood Zone 2 or 3 can be used as green space or parking.

A green corridor should be created along the Silk Stream River. A vegetated buffer zone between the river and proposed developments will help manage flood risk and enhance biodiversity.

For more information please see the Colindale AAP 2010