Sometimes if it is discovered that you project lies within flood
zone 2 or 3, it will be stipulated by you local planning authority that
you may need a Flood Risk Assessment, although this is perceived by most
as an annoyance, and its certainly can be that, a
flood risk assessment
can contain useful information such as finished floor levels, and
Flood risk maps that have been made by the environment agency and their consultant partners, are based on fluvial and marine flooding only, and do not take in to account surface water flooding (separate maps see below) and sewer flooding where large volumes of water can be transferred from one area to another through the sewer network.
So a flood risk assessment, based on available data is by no means fool proof, but more often than not will prove that your site is low risk (hopefully) or a bit of a nightmare.
|Depending on what flood plains
you are in will depend on what you can build as outlined by
However, chances are if you are building in the flood plan area, you will have taken advice from your LPA or the EA.
I you have a worry about anything give us a buzz and we will try to explain, you will get charged for a report but not for informal chit chat.
In the case of the project near the map area above, even though the site was situated within the flood zone 2, it was allowed to go ahead, for the following reasons:
1 - The type of project matched established uses for flood zone area 2 uses. That was good.
2 - There were questions over the resolution of the mapping, it appeared the site was on a raised area of ground not accounted for in the maps.
|Historic Flood extent
maps (left) and surface flooding maps are also used to compile data and
flood risk for a site.
Key Parts of Flood Risk Assessment
1 - Exception Test
2 - Sequential Test
3 - Surface Water Management Plan
4 - Safe Refuge Designation
5 - Scoping or Screening
If you have any questions regarding discharge consents whether existing or proposed then please contact SWEL, and we will offer you (of course) a free of charge initial consultation.
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