Understanding Flood Risk Reports: What You Need to Know (2023)

Flood Risk Assessment| RIDA Reports

What is a flood risk report?

During the conveyancing process, a flood risk report is used to let prospective buyers know if the property is at risk of flooding in the future, depending on floods from the past.

In order to give a general idea of the danger of flooding to the property or land, the report is put together using a collection of flood data from The Environment Agency, The British Geological Survey, and property data from HM Land Registry.

What is included in a flood risk report?

A typical flood risk report contains the following sections.

  1. Flood risk with protection measures
  2. Provided flood protection measures
  3. Property flood risk information
  4. Property flood history
  5. Guidance for property owner/occupier
  6. Glossary

Methodology and key considerations when interpreting flood risk reports

Flood risk with protection measures

After considering the flood measures provided, the flood risk to the property is summarized in this section.

  • The highest flood depth that the measures can guard against is given, in meters above the property line and in m AOD, if possible.
  • The measures incorporated into the property are distinguished as manual and automatic.
  • The projected flood risk likelihood for each source of flooding like surface water, groundwater, rivers, sea, etc at which the protective measures will no longer be effective is given.
  • The measures identified in the pre-installation survey are stated if they have been fitted, and if they have not been fitted, the reason for it.
  • Visually inspectable measures and those that are not visually inspectable during the survey are differentiated.
  • The following information can also help assess the effectiveness of flood protection measures.
    • It is indicated whether the property is a standalone structure or if it shares a wall with another property. When possible, if a wall is shared, if the adjacent property has flood protection measures and the level of protection that these measures offer are mentioned.
    • Information on community flood groups in the area is specified, and if the tenant or owner is a member of the group is indicated.
    • The pertinent flood warning services available are described, how or whose organisation delivers them, and whether residents are signed up for them.

Provided flood protection measures

  • All measures provided against flood risk are provided.
  • Activities outside the property’s border might be paired with flood protection measures to lower the risk of flooding. Information if any similar work has been done that has had an impact on this property is provided.

Property flood risk information

  • The flood risk from every possible source of flooding is summarised in this section. The estimated possibility that the property will flood for each potential cause of the flooding is given. Even if it is impossible to assess the risk for any of the sources, this table would still be used.
  • If it is impossible to evaluate the property’s flood risk, it is stated in a phrase above the summary table.
  • Any topographic surveys that have been done in detail are described. If the property hasn’t had a topographic survey, that is declared.
  • Where possible, supplementary tables are used to offer more specific data on flood levels and heights at the property from various sources.
  • If there is any information on how climate change affects flood risk (for example, tidal flooding), it is included at the end of this section.

Property flood history

The main aim of this section is to provide background information about the history of flooding in the local area and the property to the flood insurers.

  • All known information about the property flooding is entered, including dates, cause of flooding, impact, and depth. The source of information is also specified.
  • Any prior efforts to reduce the area’s flood risk, including who was in charge of them and when they were carried out, are given.

Guidance for property owner/occupier

The primary aim of this section is to advise the homeowner or occupier to keep and store their measures properly and to remind them how to use the finished report.

Glossary

The terms used in the report are defined in this section.

For more information on flood risk reports, click here – https://www.gov.uk/government/publications/property-flood-protection-flood-risk-report.

Different ways flood risk reports can be used

Flood risk reports have a variety of use cases, such as in planning, design, and risk management.

The Environment Agency uses the Strategic Flood Risk Assessment to inform recommendations about the spatial development strategy or the local plan.

Flood risk consultants and developers use it for the following purposes.

  • To assist with their site-specific flood risk assessments
  • As proof to back up the sequential and exception testing for individual applications
  • To come up with ideas for how development could help lessen the causes and effects of flooding

Risk management authorities use it for the following purposes.

  • Informing their management of the sources of flood risk they are accountable for in their assessment.
  • Identifying areas where development could help to lessen the effects of the sources of flood risk that they are responsible for

How long is a flood risk report valid?

Strictly speaking, a flood risk report is valid for three months. But it is usually valid for up to six months, depending on the work done on the catchment models. The Environment Agency will be able to confirm if a Flood Risk Assessment is still valid as they have all the information on the validity of the river models for the catchment area.

Table of Contents

Frequently Asked Questions

A drainage consultant in the UK should normally possess a degree in civil engineering or a similar profession. Professional certifications in drainage design, flood risk assessment, and sustainable drainage systems (SuDS) from organisations like the Institution of Civil Engineers (ICE) are highly desirable for this position.

Regarding following rules and getting the permissions you need, drainage specialists in the United Kingdom are invaluable. They examine drainage systems, create solutions that fulfil standards, and aid in permitting. They assist customers in complying with regulations like the Flood and Water Management Act 2010 by using their knowledge of sustainable drainage methods to interpret and meet these laws and standards.

Drainage consultants are not limited to residential properties; they also address drainage issues in commercial, industrial, and public infrastructure projects. Their expertise extends to stormwater management, flood risk assessments, and sustainable drainage systems (SuDS).

Yes, drainage consultants play a crucial role in flood risk assessments by evaluating existing drainage systems, analysing surface water runoff, and recommending strategies to mitigate flood risks.

Yes, a drainage specialist is essential in stormwater management plans. They examine topography, soil types, and rainfall patterns to build successful drainage systems.

Yes, drainage consultants play a crucial role in groundwater control and dewatering.

Drainage consultants at RIDA Drainage Consultancy use the latest SuDS design software, CAD technology, Causeway FLOW software, and other effective tools to deliver the highest quality work.

Drainage specialists, without a doubt, play an important role in upgrading old drainage infrastructure. They inspect existing systems, propose suitable rehabilitation methods such as trenchless technologies, lining, or replacement, and design efficient drainage solutions. Their experience guarantees that drainage systems are improved sustainably and cost-effectively, addressing problems like degradation, clogs, and capacity restrictions.

Frequently Asked Questions

Flood risk PPGs (Planning Practice Guidance) in the UK are created and maintained by the government’s Ministry of Housing, Communities and Local Government. Local planning authorities use these guidelines to assess and manage flood risk in development planning processes.

To access the latest Planning Practice Guidance (PPG) on flood risk, visit our official website

A Flood Risk Assessment (FRA) is a study that evaluates the potential flood risks associated with a development site. It considers flood sources’ impact on the site and proposes mitigation measures. FRAs are typically required for planning applications in flood-prone areas to inform decision-making and ensure safety.

To obtain flood risk data and maps for a specific area, you can reach out to the Flood Map for Planning section.

In many cases, you can apply for planning permission even if your site is in a high-risk flood area. However, the approval may depend on a thorough Flood Risk Assessment (FRA) and the implementation of suitable mitigation measures to address and minimise potential flood risks. The decision ultimately lies with the local planning authority.

Yes, Planning Practice Guidance (PPG) for flood risks in many jurisdictions is designed to be adaptable to various contexts, including rural and urban areas with different types of flooding risks. The guidance often provides flexibility to account for regional variations and diverse flood risk scenarios to ensure effective planning and development strategies.

Frequently Asked Questions

Although you must provide this information on your Seller’s Property Information Form, there is no legal obligation that you personally disclose to a prospective buyer that your property has experienced historic floods. It’s usually ideal to be upfront and transparent about flooding because the Environmental Search Report will also reveal flooding.

A flood risk report is essential if you are buying a home in a location where you are certain that there have been floods in the past. A potential flood risk might impact your mortgage application and insurance premium. Thus, your insurer and lender must be notified if a high-level risk is noted in the report.

If it’s a straightforward, low-risk construction, like a house extension, you might be able to perform the flood risk assessment yourself without having to engage a specialist. You can always contact the Environment Agency for guidance if you’re unsure.