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Does Great Yarmouth flood? 538 postcodes in Great Yarmouth are in the Environment Agency's rivers-and-sea flood-risk data (42 High, 38 Medium likelihood) — the breakdown is further down this page.
Conditions are worth watching: the Environment Agency has a Flood Alert in force for The Suffolk coast at Southwold — flooding is possible from 8:30am to 10:30am on Saturday 10th October. Flooding is possible — be prepared and keep an eye on updates.
Updated 2026-10-09 18:46:47 UTC · Official GOV.UK warnings · Flood preparation & help guide
Great Yarmouth, often called Yarmouth, is a seaside town which gives its name to the wider Borough of Great Yarmouth in Norfolk, England; it straddles the River Yare and is located 20 miles (32 km) east of Norwich. Its fishing industry, mainly for herring, shrank after the mid-20th century and has all but ended. North Sea oil from the 1960s supplied an oil rig industry that services offshore natural gas rigs; more recently, offshore wind power and other renewable energy industries have ensued. In 2021 the built up area had a population of 28,985.
Ordnance Survey places 538 postcodes in Great Yarmouth in the Environment Agency's rivers-and-sea flood-risk dataset (Risk of Flooding from Rivers and Sea). Each postcode is counted once, under the worst band any of its properties reaches; together they hold 9,311 properties in the EA dataset's likelihood bands.
| EA likelihood band | Postcodes (worst band) | Properties in the EA dataset | of which homes |
|---|---|---|---|
| High | 42 | 378 | 75 |
| Medium | 38 | 812 | 369 |
| Low | 291 | 4,123 | 3,336 |
| Very low | 167 | 3,998 | 3,249 |
| All bands | 538 | 9,311 | 7,029 |
This dataset covers flooding from rivers and the sea only — one of five flood sources. Surface water, groundwater, sewers and reservoirs are assessed separately, so a postcode missing from it is not proof that a place cannot flood. The band describes the land around properties (allowing for defences), not any single address and not today's conditions.
…and 438 more at-risk postcodes, listed on the district pages below.
Gorleston-on-Sea · Caister-on-Sea
Flood-risk bands: © Environment Agency copyright and/or database right 2025. All rights reserved. Some features of this map are based on digital spatial data from the Centre for Ecology & Hydrology, © NERC (CEH). © Crown Copyright and Database Rights 2025 OS AC0000807064. This product is produced in part from PAF® and Multiple Residence Data, the copyright in which is owned by Royal Mail Group Limited and/or Royal Mail Group plc. All rights reserved. Licence number AC0000807064.
Place names: Contains OS data © Crown copyright and database rights 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Contains National Statistics data © Crown copyright and database right 2026. Licensed under the Open Government Licence v3.0.
The nearest watercourse on the river map is an unnamed stream (tidal here), about 60 m from the middle of Great Yarmouth's gauges.
A gauge downstream shows water that has already passed this point; one upstream sees it first. Distances along the river are from the point on an unnamed stream nearest the middle of Great Yarmouth's gauges. From Ordnance Survey’s river map (OS Open Rivers), which leaves out small streams, ditches and culverts, so a nearer one may exist. This describes where water goes on the map; it says nothing about flooding at any address. Contains OS data © Crown copyright and database rights 2026.
Great Yarmouth is monitored by 1 Environment Agency river level station on the Norfolk Coast, in Norfolk. Water levels are updated every 15 minutes, providing real-time flood monitoring for the area.
The Norfolk Coast is monitored by 1 station (Great Yarmouth). Each station records water levels continuously, with data synced to FloodRadar every 5 minutes.
There are 8 Environment Agency flood warning areas within 10km of Great Yarmouth. When the EA issues a flood warning for any of these areas, it will appear on this page. These include: The west bank of the River Yare at Great Yarmouth, from Gorleston to Ferry Hill, including areas around Riverside Road; The east bank of the River Yare at Great Yarmouth, from South Denes to South Quay, including areas around Southgates and South Denes; The west bank of the River Yare at Great Yarmouth, from Ferry Hill to Breydon Water, including Southtown and Cobholm; The seafront at Great Yarmouth, from Salisbury Road to the Pleasure Beach.
There are 9 storm overflows within 5km of Great Yarmouth. None of the 7 with a reporting monitor are currently discharging (2 have no live status right now). Enable "Sewage" on the map above to see their locations.
6 of them, nearest first, with their own page of live status and past discharges:
If flooding is forecast in Great Yarmouth, call Floodline on 0345 988 1188 for the latest information. Move valuables upstairs, turn off gas and electricity if safe to do so, and avoid walking or driving through flood water. Sign up for flood warnings on any station page above to receive email alerts when water levels rise. For emergency numbers, a preparation checklist and insurance guidance, see our flood help & preparation guide.
Great Yarmouth gets about 621 mm of rain a year on average (wettest month October, 71 mm; driest April, 35 mm). That is 47% drier than the UK as a whole, which averages 1,163 mm a year. See the rain gauges →
A thirty-year average for the area, not a forecast and not a flood risk on its own. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 1.5 km away. Average rainfall: HadUK-Grid v1.3.2, Met Office. Contains public sector information licensed under the Open Government Licence v3.0.
Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of the town centre — most recent first. These are records of mapped extents, not a full list of floods. See them on the map →
Records, not floods: no outline on the record is not evidence a place has not flooded.
Current verdict: Watch. Conditions are worth watching: the Environment Agency has a Flood Alert in force for The Suffolk coast at Southwold — flooding is possible from 8:30am to 10:30am on Saturday 10th October. Flooding is possible — be prepared and keep an eye on updates.
Great Yarmouth has river level monitoring on Norfolk Coast — 1 monitoring station in total.
Use the GOV.UK Check for Flooding service (check-for-flooding.service.gov.uk) or call Floodline on 0345 988 1188 (24 hours). You can also set up free FloodRadar email or browser alerts from any station page above.
Follow official advice: move valuables and vehicles to safety, never walk or drive through flood water, turn off gas and electricity if safe, and check on vulnerable neighbours. See our flood preparation guide at floodradar.co.uk/flood-help.
Yes — the Environment Agency's Recorded Flood Outlines dataset shows 2 recorded flood extents around the town centre since 1703, most recently in 2013. That is a count of mapped extents, not of separate floods. Records, not floods: no outline on the record is not evidence a place has not flooded. See the flood history link below.
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