1 in 6 properties in England are at risk of flooding from rivers, sea and surface water, with many others susceptible to various sources of flooding. This number is only set to increase due to climate change, making the need for you as a property owner to check your own risk ever more important. A variety of information is available to help you check your flood risk, giving you a head start to prepare your property for potential flooding.
Maps are a useful way of visually representing the risk of different types of flooding where you live and in the surrounding area.
The following maps have been produced by the Environment Agency:
Example of the Environment Agency’s flood risk map
There may be extra information available for your local area from your Local Authority or County Council. Click here to find your local council.
If there are flood schemes to reduce flood risk in your area, whether ongoing or complete, there will always remain a level of residual risk present. Please don’t rely on these schemes for full protection or expect them to remove flood risk completely.
Also known as fluvial flooding, this occurs as a result of intense or sustained rainfall across a catchment that exceeds the capacity of a rivers channel. This type of flooding affects main rivers and ordinary watercourses.
The Environment Agency is responsible for managing flood risk from main rivers and for the strategic overview of all flooding and coastal erosion management. They have a strategic overview of all sources of flooding and coastal erosion (as defined in the Flood and Water Management Act 2010). They lead on flood and coastal erosion risk management activities on main rivers and the coast. To report any blockages, flooding or pollution incidents, visit the GOV.UK website here or call their incident hotline on 0800 80 70 60.
Click here to find out what the Environment Agency do during an incident.
River Ribble during flooding in Ribchester, Lancashire
Pluvial flooding, also referred to as surface water flooding, happens when the amount of rainfall exceeds the drainage capacity of surface water sewers and drains, causing water to accumulate on land instead of being absorbed. This type of flooding can be worsened by blocked road gullies, sewers, and drains, as well as saturated land and increased hard surfaces.
The Lead Local Flood Authority (LLFA) is responsible for managing the risk of flooding from surface water and producing local flood risk management strategies, as well as investigating and producing a Section 19 report for flooding incidents when deemed necessary. You should report this type of flooding to your LLFA which will either be the District Council, provided it is a Unitary Authority, or the County Council. Find your local council here.
You can also find out who your LLFA is by entering your postcode on the Environment Agency’s ‘Long Term Flood Risk Information service’ here.
FACT: Surface water flooding threatens more people and properties than any other form of flood risk. In the UK, over 3 million properties are at risk from surface water flooding, compared to 2.7 million at risk from rivers and the sea. – Environment Agency
Groundwater flooding occurs when the water table rises above the surface, usually during a prolonged wet period. Low lying areas, areas near aquifers, and properties with cellars or basements are more likely to experience groundwater flooding. You can find out whether there are any groundwater flooding alerts or warnings here.
The Lead Local Flood Authority (LLFA) is responsible for managing the risk of flooding from groundwater and producing local flood risk management strategies, as well as investigating and producing a Section 19 report for flooding incidents when deemed necessary. You should report this type of flooding to your LLFA which will either be the District Council, provided it is a Unitary Authority, or the County Council. Find your local council here.
Sewer flooding incidents usually happen as a result of blockages caused by the misuse of the sewerage system, for example by flushing unsuitable items down the toilet. Heavy rainfall can also contribute to overloading the sewerage system, especially when there are blockages. It can be dangerous as contaminated sewage may end up in properties or rivers.
It is important that only the 3 P’s are flushed down the toilet (paper, pee and poo), any other unsuitable items or fat, oil and grease (FOG) can lead to blockages and flooding. Check out our resource on ‘Sewers, Blockages and Flooding,’ here for more information.
Water and sewerage companies are responsible for managing the risk of flooding from public sewers and utility pipes. In the North West, this is United Utilities, to report sewer flooding call 03456 723 723, to report a leak or a burst water main call 0800 33 00 33, for blocked drains visit their website here, or visit this webpage for more information.
FACT: More than 3,000 homes are flooded in the UK every year because of fat, oil and grease (FOG) blockages and fatbergs – Southern Water.
Coastal flooding has a variety of causes but most commonly occurs from storm surges where high storm winds and low pressure push sea water towards the coast, creating large waves that are likely to overtop coastal defences. Coastal erosion causes the coastline to retreat inland, increasing the risk of coastal flooding and the potential loss of land.
Climate change is causing rising sea levels of around 4mm per year, which may contribute to flooding as not only does it make low lying land more vulnerable but it gives storm surges a higher starting point. Flooding may be more likely on developed land that has been reclaimed from the sea via coastal management. Even a small rise in sea levels may be enough to cause flooding in these areas.
The Environment Agency is responsible for managing flood risk from main rivers and for the strategic overview of all flooding and coastal erosion management. To report any blockages, flooding or pollution incidents, visit the GOV.UK website here or call their incident hotline on 0800 80 70 60.
Download our ‘Influences on coastal flooding’ resource here.
Flooding on the road can come from a number of sources and most commonly, the cause is blocked gullies and drains.
The highway authority are responsible for ensuring that there is no increased flood risk from any roads and road projects. For gullies and drains on main roads and smaller roads, the highway authority is usually the County Council or Unitary Authority. To report flooding to them, find your local council here. National Highways is the responsible highway authority for flooding on major roads and motorways.
Road flooding in Ribchester, March 2019
Flash flooding often happens without warning due to intense and heavy rainfall. Places that have gone through a long period of dry weather, as well as urban areas with a lot of hard surfaces, are at higher risk of flash flooding as the land can’t absorb the water. Locations situated near steep valleys are particularly vulnerable to this type of flooding.
The Environment Agency have put together some further information on flash flooding, click here to find out more.
The source of the flash flood will often determine who is responsible for managing the flood risk.
Download our flash flooding resource here.
Reservoir flooding is very unlikely to happen, but in the rare chance that it does, it may happen with little or no warning and can cause major damage. Some of the causes of reservoir flooding include improper maintenance, a leak or crack in the dam or embankment structure, a landslip down the embankment of a dam and slope instability. Most large reservoirs are operated by water companies (United Utilities in the North West) or the Environment Agency, and are regularly monitored and inspected to ensure they are safe. Reservoir maps were created to help authorities and emergency services plan for the risk of reservoir flooding, by showing how far flood water would spread in a worst case scenario.
If you own or operate a reservoir, there are certain requirements which must be met and different sized reservoirs have different requirements. ‘Large raised reservoirs’ are those which hold at least 25,000 cubic metres of water above ground level and they must be registered with the Environment Agency.
Download our Reservoir Flooding one page summary here and our ‘Introduction to Reservoir Flooding’ booklet here.
Canal flooding occurs when the water levels are too high and over top, which can happen when locks are operated incorrectly or vandalised. Flooding from canals is rare, but even with the best controls in place there can sometimes be too much water to manage.
Incidents can be reported to the Canal and River Trust, during office hours, by calling 0303 040 4040. If the canal towpath is flooded or there is a failure of the canal bank, there is a 24 hr emergency contact number 0800 479 9947. If there is an emergency call 999.
There are a number of ways that an area can flood; various Risk Management Authorities (RMAs) and individuals are responsible for the different types of flooding, whilst who you report each type of flooding to can also vary.
Visit our ‘Report’ section here for a straightforward guide on who to report the different types of flooding to.
For an overview on the types of flooding download the resource here, or for a summary of who’s responsible for manging flood risk from different sources, download the resource here.
Responsible for managing flood risk from:
Also known as watercourse owners, riparian owners are responsible for maintaining watercourses that run through, beneath, or adjacent to their land, including culverts, ditches, brooks, dykes and streams. Flooding from these watercourses due to a lack of maintenance could lead to legal action. Find out more about watercourse ownership and responsibilities on our Landowner page here, or go directly to GOV.UK to the Environment Agency’s ‘Owning a watercourse’ guidance here.
See if you’re a riparian owner by downloading our ‘Are you a riparian owner?’ flowchart here.
Download our ‘What is Riparian Ownership?’ resource here.
Flood alerts and warnings are a great way to keep up to date with the flood risk and the river and sea conditions in your area, allowing you to be pre-warned of any risks towards your property.
The ‘Check for flooding’ service is provided by the Environment Agency and allows users to input their postcode and find out the:
Image of Live Flood Map which can be viewed via the Environment Agency’s ‘Check for Flooding’ service.
The page is regularly updated and provides information on the risk of flooding from rivers, the sea and groundwater only. There’s information on how to sign up for flood warnings and how to find out your risk of flooding from surface water.
Click here to view the ‘Check for flooding’ service
The Environment Agency measures current river and sea levels across England via Environment Agency monitoring stations. These river levels are publicly available data, and are available on other sites such as Gauge Map. For each river monitoring station there is a graph available that shows the threshold level which, if exceeded, means flooding may be possible at that location. These recorded river levels can act as a trigger for the Environment Agency Flood Alert and Warning service.
The Environment Agency offers a free Flood Warning Service that enables people in flood warning areas to receive flood alerts and warnings by telephone, text and email, even if you are not at home when they are sent. You can easily sign up to receive these warnings on the website or via telephone on 0345 988 1188 to give yourself more time to prepare for a flood. Understanding what each warning stage means is important in avoiding unnecessary panic and stress. These warnings cover the risk of flooding from main rivers and the sea, but do not cover flooding from groundwater, surface water or sewer flooding.
It is important to note that not all areas at risk of flooding are covered by the Environment Agency’s Flood Warning Service.
For more information on the actions to take at the different flood alert and warning stages, see our flooding planning section here.
This flood warning resource outlines what steps to take should a flood warning be issued. Click here to download.
There are a range of ways to receive flood and weather warnings and keep up to date with your local flood risk, allowing you to act upon triggers to put your flood plan into place. As well as the Environment Agency’s flood warning service, here are some alternatives:
The Met Office provides a Weather Warning Service on their website that uses a colour coded system of warnings. The three warning levels are:
Water cameras are present on all types of watercourses across the UK. There are many sites available online where you can search a map or enter a postcode to find a watercam near you. The cameras show live or regularly updated conditions of rivers and watercourses, with some also providing graphs of river levels, rainfall and tide times, as well as archive photos of past conditions.
The Emergency App from the British Red Cross provides information and alerts for flooding and other emergencies. You can tailor the app to notify you about weather conditions in certain places, and can add chosen contacts for those areas. There are other similar apps available that you may find useful.
By keeping up to date with your local news and radio you will be more informed and prepared to act when severe weather occurs. You can do this by tuning in to local radio stations whilst driving and downloading news apps to receive newsflashes.
Gauge boards show the current height of water on various rivers and watercourses. They are physical boards installed at specific locations on a watercourse and can usually be viewed from a river bank or crossing. In the absence of a gauge board you can familiarise yourself with the normal level of the watercourse so you can detect abnormally high water levels in times of flooding. These methods are useful when flooding is common in an area, as you can use certain water levels as a trigger for your flood plan.
Gauge boards by the River Ribble in Ribchester, Lancashire
These alarm systems are designed to give you a more localised trigger and provide ample time to implement temporary defence measures. They are most suitable for properties with a watercourse nearby or on private land. They usually include an indoor alarm unit, and a water sensor installed at a location where rising floodwater will be detected early, well before flooding commences.
Click here to download our ‘Alternative Flood Warnings’ resource.
The ‘Check for flooding’ Service is provided by the Environment Agency and allows users to input their postcode and find out the:
Image of Live Flood Map which can be viewed via the Environment Agency’s ‘Check for Flooding’ service.
The page is regularly updated and provides information on the risk of flooding from rivers, the sea and groundwater only. There’s information on how to sign up for flood warnings and how to find out your risk of flooding from surface water.
Click here to view the ‘Check for Flooding’ service
Here are some quick steps you can take to try and minimise the damage from flooding and keep yourself safe…
If you need to evacuate…
For more detailed information about planning and preparing for flooding, visit our Household page here.
Ideally you should not attempt to drive if the roads are flooded. Instead, you should move your vehicle to higher ground to avoid any damage when it is safe to do so – this may be when a weather warning or flood warning has been issued. If you feel that driving is unavoidable in severe weather conditions or if you are perhaps caught in heavy downpours and flash flooding, consider these points:
For more information, click here to read our blog or download our ‘Driving in Floodwater’ resource, which can be found by clicking here. Check out our animation below.
Climate change is increasing the risk of flooding to both coastal and inland communities. Over the last 10 years, record breaking rainfall and floods have become a new normal.
The world is facing a climate emergency as human activity has caused an increased rate in the release of greenhouse gases into the Earth’s atmosphere, largely resulting from the Industrial Revolution and the increased burning of fossil fuels. Increased emissions trap the sun’s energy in the atmosphere and cause a rise in global temperatures which results in the following effects becoming increasingly visible year on year:
Download our ‘Impacts of Climate Change’ resource here.
To find out more about the climate emergency, visit the United National Environment Programme (UNEP) website here.
Rochdale Borough Council’s ‘Climate Conversations – Think global, act local – part one’ video.
We also have our own KS2 Climate Change Education Package which can be found here.
