- Flood risk assessment
A flood risk assessment is an assessment of the risk of
flooding, particularly in relation to residential, commercial and industrial land use.
England and Wales
In England and Wales, the
Environment Agencyrequires a Flood Risk Assessment (FRA) to be submitted alongside planning applications in areas that are known to be at risk of flooding, planning permissionis not usually granted until the FRA has been accepted by the Environment Agency. Flood risk assessments are also relevant to the maintenance and insurance of existing buildings. [ [http://www.floodrisk.org.uk/ Floodrisk Management Research Consortium] ]
PPS(25) legislation - England only
Flood Risk Assessments are required to be completed according to
Planning Policy Statement(PPS)25: Development and Flood Risk. The initial legislation (PPG25) was introduced in 2001.Fact|date=April 2008 PPS(25)was designed to "strengthen and clarify the key role of the planning system in managing flood risk and contributing to adapting to the impacts of climate change." [ [http://www.communities.gov.uk/statements/corporate/planning-policy-flooding Planning Policy Statement (PPS) 25: Flooding - Corporate - Communities and Local Government ] ] and sets out policies for local authorities to ensure flood risk is taken into account during the planning process to prevent inappropriate development in high risk areas and to direct development away from areas at highest risk.
In its introduction, PPS25 states "flooding threatens life and causes substantial damage to property [and that] although [it] cannot be wholly prevented, its impacts can be avoided and reduced through good planning and management". [ [http://www.communities.gov.uk/documents/planningandbuilding/pdf/153740 PPS(25) pdf] ]
Composition of an FRA
For a flood risk assessment to be written information is needed concerning the existing and proposed developments, the Environment Agency modeled flood levels and topographic levels on site. At its most simple (and cheapest) level an FRA can provide an indication of whether a development will be allowed to take place at a site.
An initial idea of the risk of flooding to a local area can be found on the [http://www.environment-agency.gov.uk/subjects/flood/ Environment Agency flood map website] . However, the Environment Agency use low resolution flood mapping to create this flood map as a cautious estimate of flood risk, and therefore on the more local scale this mapping may not be accurate. [ [http://www.ggy.bris.ac.uk/research/hydrology/models/lisflood School of Geographical Sciences, University of Bristol ] ]
Longer FRAs consist of a detailed analysis of available data to inform the
Environment Agencyof flood risk at an individual site and also recommend to the developer any mitigation required for a planning application to be submitted. More costly analysis of flood risk can be achieved through detailed flood modelling to challenge the agency's modelled levels and corresponding flood zones.
The FRA takes into account the risk and impact of flooding on the site, and takes into consideration how the development may affect flooding in the local area. It also includes provides recommendations as to how the risk of flooding to the site can be improved or improved following development.
Assessments can also be used to provide insurers with a more detailed assessment of flood risk at a location, and can act as a means of reducing insurance premiums.Fact|date=May 2008
* [http://www.floodsmart.gov/prp US Government: Flooding Assesment in the United States]
Wikimedia Foundation. 2010.
Look at other dictionaries:
Strategic Flood Risk Assessment — In England and Wales, Strategic Flood Risk Assessments (SFRAs) are a required part of the local planning process, as set out in Planning Policy Statement 25, produced by the Department for Communities and Local Government. SFRAs are primarily… … Wikipedia
Risk assessment — is a common first step in a risk management process. Risk assessment is the determination of quantitative or qualitative value of risk related to a concrete situation and a recognized threat. Quantitative risk assessment requires calculations of… … Wikipedia
Flood — A flood is an overflow of an expanse of water that submerges land, a deluge.MSN Encarta Dictionary. [http://encarta.msn.com/encnet/features/dictionary/DictionaryResults.aspx?refid=1861612277 Flood.] Retrieved on 2006 12 28.] In the sense of… … Wikipedia
Risk — takers redirects here. For the Canadian television program, see Risk Takers. For other uses, see Risk (disambiguation). Risk is the potential that a chosen action or activity (including the choice of inaction) will lead to a loss (an undesirable… … Wikipedia
Risk management — For non business risks, see risk, and the disambiguation page risk analysis Example of risk management: A NASA model showing areas at high risk from impact for the International Space Station. Risk management is the identification, assessment,… … Wikipedia
Nepal Risk Reduction Consortium — (NRRC) was launched by the Government of Nepal (GoN) and a group of international organizations working to promote the UN International Strategy for Disaster Reduction (ISDR) in 2009. It exists to bridge the spectrum of development and… … Wikipedia
IPCC Fourth Assessment Report — IPCC Assessment reports: First (1990) 1992 sup. Second (1995) Third (2001) Fourth (2007) … Wikipedia
North Sea flood of 1953 — 1953 North Sea flood Aftermath of the flood in Oude Tonge, Goeree Overflakkee, Netherlands … Wikipedia
Cresta, Catastrophe Risk Evaluating and Standardizing Target Accumulations — CRESTA (Catastrophe Risk Evaluation and Standardizing Target Accumulations) was founded as a joint project of Swiss Reinsurance Company, Gerling Konzern Globale Reinsurance Company, and Munich Reinsurance Company. CRESTA has set itself the aim of … Wikipedia
Coastal flood — Coastal flooding occurs when normally dry, low lying land is flooded by sea water. The extent of coastal flooding is a function of the elevation inland flood waters penetrate which is controlled by the topography of the coastal land exposed to … Wikipedia