Flood risk assessment
National Planning Policy Framework|National Planning Policy Framework Section 10 Paragraph 103
Planning Practice Guidance on Flood Risk and Coastal Change|
|Type of application|
|Geographic locations where this information is required||-All areas|
|What information is required|
Application types 1, 2 & 3: Evidence that the site meets the, Flood risk sequential and exception testif appropriate.
Application type 1: full Flood Risk Assessment
Application type 2: full Flood Risk Assessment
Application type 3: a Surface Water Drainage Self Assessment Form [PDF file 109KB]|
Your Flood Risk Assessment (FRA) should identify and assess the risks of all forms of flooding to and from the development and demonstrate how these risks will be managed, taking climate change into account. The FRA should be proportionate to the scale and nature of the development and the risk. It should describe the design of surface water management including consideration of Sustainable Drainage Systems (SuDS) and address the requirement for safe access to and egress from the development in areas at risk of flooding. Finally it should indicate how exceedance flows will be managed on or off site without increasing flood risk.
|Where to look for further assistance|
See 'Further Information' below.
If, after reading the Further Information, you are still unsure as to what to submit, contact the Council's Drainage Engineer on (01422) 392168 and the Environment Agency on (03708) 506506..
Flood Zones are defined in the Planning Practice Guidance Table 1 and shown on the Environment Agency’s Flood Risk Maps|
Any area not mapped as Zone 2 or 3 falls within Zone 1.
Levels of vulnerability are defined in the Planning Practice Guidance Table 2. Compatibility of vulnerable development with flood zone sites is defined in the Planning practice Guidance Table 3.
Flood Risk Assessments
The FRA should be prepared by an applicant in consultation with the local planning authority with reference to published local development documents and the Calder Valley Strategic Flood Risk Assessment (NB This document and the associated maps are currently under review.
The Environment Agency’s provides Flood Risk Assessment Guidance| on preparing flood risk assessments that is specific to the particular flood zone and type of development.
Prior to producing a flood risk assessment, it is advisable to ensure that the sequential test has been passed. If there are other available sites at a lower probability of flooding that could accommodate the proposed development then the sequential test will be failed and a flood risk assessment would be irrelevant. If the application of a sequential test demonstrates that it is not possible to locate the development in a lower flood risk zone, an exception test may then be required.
The Flood Risk Assessment should form part of an Environmental Statement when one is required by the Town and Country Planning (Environmental Impact Assessment (Amended) 2015.