Flood Risk Assessment in Skegness

Any flood risk assessment in Skegness has to begin at the sea wall. The town stands on the flat Lincolnshire marsh behind a sea wall and a beach that the Environment Agency tops up with dredged sand. Even so, the agency's planning map puts almost all of it in Flood Zone 3. We prepare flood risk assessments in Skegness for planning applications, buyers, lenders and insurers, together with sequential and exception tests and surface water drainage strategies, for sites from the front to the town's western edge.

Skegness, Lincolnshire, is taken here as the built-up area the Office for National Statistics draws. That covers the old town and the front either side of the pier and the Clock Tower, Winthorpe and Seathorne to the north, Seacroft to the south, and the estates and business land out along Burgh Road. Nearly all of it falls in the PE25 postcode district, which it shares with Ingoldmells, the holiday-park village beyond its northern edge that ONS maps as a separate built-up area. Gibraltar Point, the nature reserve at the southern tip, lies outside the outline.

Laid over the ONS outline of the town, the Environment Agency's Flood Map for Planning puts 98.5% of Skegness in Flood Zone 3, almost all of it at risk from the sea. Only a sliver of the built-up area is in Flood Zone 1.

To talk through a Skegness site with one of our flood risk consultants, call 01293 214444 or email enquiries@unda.co.uk. Reports for sites in Skegness come from Unda Consulting Limited, a CIWEM Business Partner.

Why Skegness maps as Flood Zone 3 behind its sea wall

The Flood Map for Planning shows where water would go if the defences were not there, and Skegness is low enough that the North Sea would reach nearly all of it. Our overlay of the map on 21 October 2026 found 98.5% of the built-up area in Flood Zone 3, 0.7% in Flood Zone 2 and less than 1% in Flood Zone 1. The agency marks almost all of that zone 3 land as at risk from the sea, and a few small patches, mostly on the western side of the town, as at risk from river and sea together. Water can reach a Skegness site by several routes:

• The North Sea. The front from Seathorne to Seacroft is held by a sea wall and a nourished beach. The Environment Agency's Tidal flooding of low lying areas in Skegness warning area takes in Seathorne, Winthorpe, Lincoln Road, the A158, the A52 and Seacroft, and a second area covers the land nearest the defences, including North Parade and South Parade.
• Gibraltar Point and the Wash. South of Seacroft the coast turns into the Wash, where dunes, saltmarsh and the walls at Burgh Sluice face the sea, with warning areas of their own along the Wash frontage.
• The Steeping and the Croft drains. Inland to the south-west, the River Steeping and its relief channel reach the sea at Gibraltar Point, and the agency warns separately for the Little River Lymn and Cowcroft Drain around Croft. The relief channel was built in the 1970s to store water while high tides hold the outfall shut.
• Board drains and pumps. Rain that falls on the town leaves through the Lindsey Marsh Drainage Board's drains, culverts and pumping stations. The district's 2017 SFRA says the board aims for a 1 in 75 standard in built-up areas.
• Sewers on level ground. There is very little fall across the town, so a cloudburst can fill Anglian Water's sewers and the road gullies faster than they drain.

The flood zones decide which planning tests apply; they do not describe how likely a flood is today. The Environment Agency's Skegness flood risk page gives the risk with the defences in place, along with any warning in force.

Search a Skegness postcode, from Winthorpe to Seacroft

Type a postcode into the map below for a first screen of one Skegness address, built from the Environment Agency's sea, river, surface water and reservoir layers; our full flood risk map covers the rest of England. The coral line follows the ONS built-up area, with Winthorpe and Seathorne at its northern end and Seacroft at its southern end, and Ingoldmells and Gibraltar Point beyond it.

The Environment Agency's recorded outline of the 1953 flood covers about a quarter of that built-up area (2.0 km²): the seafront and the old town around the Clock Tower, Lumley Road, Grand Parade, North Parade and Drummond Road. Winthorpe, Seathorne, Seacroft and the streets by the station lie outside it. The agency rates the outline's data as fair, and it records where the sea got in that night, not where it could reach now.

Skegness flooding on record, from 1953 to the Wainfleet breach

Four dates mark the town's flood record. Each comes from the county council, the Environment Agency or the Lincolnshire Wildlife Trust:

1. 31 January 1953. A North Sea surge overtopped the defences along the Lincolnshire coast. The county council records 43 deaths in Lincolnshire, names Mablethorpe, Sutton on Sea and Skegness as the worst affected places and says the water went up to two miles inland. Our piece on the 1953 North Sea flood traces the surge from Spurn Head to the Thames.
2. 5 December 2013. The biggest surge since 1953 broke about 90 metres of floodwall at Skegness between the pier and the lifeboat station, and police received reports of water up to the Clock Tower. At Gibraltar Point the sea breached Bull Dog Bank and overtopped the walls at Burgh Sluice, and the Wildlife Trust reported its visitor centre flooded up to two feet deep. Across the county 607 homes and 121 businesses flooded, most of them in Boston, according to the council's after-action report.
3. 2015. The Environment Agency built a new wall behind the damaged one between the RNLI station and Scarborough Esplanade, pausing for the summer season, while the district council paid to double the width of the promenade along it.
4. 10 to 15 June 2019. After 74.6 mm of rain on 10 June, the bank of the Steeping's relief channel gave way near Wainfleet, about 9 km south-west of the town. The county's Section 19 report counts 88 properties flooded internally, six of them in Croft parish, and 580 homes evacuated over six days, affecting around 1,000 people.

The town's own floods have come from the sea, while the 2019 water came down a river into the parishes next door. Our live river levels map shows the Environment Agency's gauges on the Steeping and along this coast, alongside any warning in force, and our storm surge explainer covers how forecasters see a surge coming.

The wall, the sand and a shoreline policy still open after 2055

Skegness relies on defences that the Environment Agency maintains under its Saltfleet to Gibraltar Point Strategy, and the Shoreline Management Plan sets a long-term policy for each length of coast. What a site behind the front relies on, and what the plans say about it after 2055:

East Lindsey's guidance on the Coastal Zone says work on the coast's future is going on through the Lincs Coast 2100+ partnership, and warns that the Environment Agency is likely to be unable to support new development whose lifetime runs beyond 2040. Our explainers on sea defences and sea level rise set out the national picture behind that date.

East Lindsey's Coastal Zone and what a Skegness application must show

East Lindsey District Council decides applications in Skegness under its Local Plan Core Strategy, adopted in July 2018. The whole town lies in the Coastal Zone, the area the plan takes from the Environment Agency's Coastal Flood Hazard Map, and most of the rules that shape a scheme follow from that:

• Policy SP3. Housing on the coast is held to the commitments that existed when the plan was adopted, with exceptions set out in policies SP18, SP8 and SP9. The plan places its market housing allocations inland.
• Policies SP17 to SP19. SP17 deals with coastal East Lindsey, SP18 with coastal housing and SP19 with holiday accommodation, the policy the Environment Agency cites when it asks for caravans and lodges to stand empty through the winter.
• The 2017 SFRA. Where a housing site lies wholly within the red, orange or yellow hazard bands, the district's flood evidence runs the sequential test search across the rest of the district outside those bands, which in practice means looking inland.
• The council's current guidance. Relevant new development needs a site-specific assessment that "must consider the undefended scenario", and "In all circumstances a Flood Warning and Evacuation Plan (FWEP) will be required." The Environment Agency's advice has to be answered but is not decisive on its own. Our note on residual flood risk covers breach and overtopping.
• Drainage. Lincolnshire County Council, as Lead Local Flood Authority, comments on major schemes against its 2021 roads and sustainable drainage guidance, and the drainage board's consent is needed for any new discharge to its drains.
• National policy. The August 2026 NPPF deals with flood risk in chapter 18: policy F4 decides when an assessment is triggered, F5 and F6 hold the two tests, and F8 points all development to the 2025 national standards for sustainable drainage.

For housing, the sequential test is usually the deciding step. In January 2026 an inspector dismissed an appeal for 15 homes off Skegness Road in Burgh le Marsh, in the Coastal Hazard Zone, because no other sites had been assessed, even though the homes could have been built to stay dry. District-wide requirements and validation are on our East Lindsey District Council page.

Holiday parks, Skegness Gateway and the foreshore

Most proposals in and around Skegness are one of a handful of kinds, and the Coastal Zone sets a different test for each:

Skegness Gateway is the same question asked of a whole new neighbourhood. East Lindsey's Executive Board first resolved to adopt a Local Development Order for the 336-acre site, with around 1,000 homes, in March 2024, and approved a revised order in April 2025, subject to legal agreements. The Environment Agency had objected to the earlier proposals on flood risk grounds. The landowner's £151 million Flood Risk Resilience Fund comes from a management fee on the new homes, and the scheme's assessment counts 13.8 km of defences, from Burgh Sluice to the main drain outfall at Ingoldmells, as protecting the site. For smaller sites, our guide to campsite and caravan site flood risk sets out the national rules.

Drains, pumps and soakaways on the Skegness marsh

Surface water from most Skegness sites reaches the sea through a drainage board drain and a pump or sluice, so the board's consent matters as much as the council's:

• Lindsey Marsh Drainage Board. Its district covers 52,500 ha of the coastal marsh, with 942 km of maintained watercourses and 30 pumping stations, and it is running an asset survey and cleansing programme in Skegness. Its byelaws bar building, fencing or planting within nine metres of a board watercourse, open or piped, without consent.
• Discharge consent. Any increase in surface water or treated foul flow into the board's network needs consent, and in its extended area the board consents on behalf of the county council.
• The county's limits. Greenfield sites may not exceed the greenfield peak, and previously developed land has to come as close to it as practicable. Only a direct outfall to the sea or a large estuary is spared those controls.
• Soakaways. The county wants infiltration tests repeated three times, using the worst rate, and a metre between the base of a soakaway and the highest recorded groundwater, a margin a low-lying site may not have.
• Sewers. Anglian Water runs the public sewers, and the county's rules never allow surface water into a foul sewer.

Our BRE 365 infiltration rate calculator works through soakaway test results, and our guide to internal drainage boards explains consents and byelaws.

Reports we prepare for Skegness sites, from Seathorne to Seacroft

A park operator at Winthorpe, a buyer on the front and a housebuilder on the western edge each need something different, but every one of those reports starts from the sea. Reports come from our chartered consultants and go out only once a senior consultant has signed them off.

• Applications in the Coastal Zone. New homes, conversions and holiday accommodation need a flood risk assessment for planning that covers the undefended scenario the district council now asks for.
• Sea, drains and rain together. A flood risk assessment for a Skegness site weighs overtopping and breach on the front, the board's pumped drains and surface water on level ground in one report.
• Before exchange. Almost every address in the town shows Flood Zone 3 in conveyancing searches, and a flood risk survey for property purchase explains what the defences, the 1953 outline and the floor level mean for one building.
• Testing the location. Housing wholly within the hazard bands goes through the sequential and exception test, with the search for alternatives running across the district outside the Coastal Zone.
• Drainage with the application. Major schemes go to the county council for comment, so the submission needs a drainage strategy showing where the water goes and with whose consent.
• Rates the board will accept. Where the outfall is a board drain, a surface water drainage strategy stores runoff on site and limits the release to the rate the board and the county allow.
• After permission. Where an East Lindsey permission comes with a drainage condition, discharge of drainage conditions supplies the details, the board's consent and the maintenance arrangements.
• A plan for every site. The district council asks for a flood warning and evacuation plan with relevant development in the Coastal Zone, tied to the Skegness tidal warning areas.
• Breach depths for one plot. Where the hazard mapping is too coarse for a plot near the front, flood modelling can test overtopping and breach at the site itself, as the Gateway's own assessment did.
• Holiday parks and seafront property. Buyers and lenders taking on a caravan park at Winthorpe or Ingoldmells, or an arcade or hotel on the Skegness front, can commission flood risk due diligence on its exposure to a surge and its SP19 occupancy limits before they commit.
• Homes inside the 1953 outline. Owners in the old town, which the 1953 flood reached and where water was reported at the Clock Tower in 2013, can use a flood risk assessment for insurance to show their actual exposure.
• Keeping a seafront business trading. Kiosks on the front were damaged in 2013, and a business continuity assessment plans how a shop, kiosk or arcade responds to the next tidal warning.

When the sea, a drain or a sewer floods in Skegness

If water threatens anyone's life, ring 999; a power cut goes to 105. Day to day, flood risk in Skegness is split between these bodies:

Questions from Skegness owners, buyers and park operators

Unda Consulting Limited prepares flood risk assessments, sequential and exception tests and drainage strategies for sites across Skegness, from Seathorne and Winthorpe to Seacroft. To talk one through, call 01293 214444 or email enquiries@unda.co.uk. The wider county, including Lincoln and the Wolds, is on our Lincolnshire page; Mablethorpe faces the same sea farther north, and Boston lies on the tidal Witham near the Wash. Every other town we cover is in our list of areas.