Does Ramsey Island flood?

What the Environment Agency's rivers-and-sea flood-risk data says about Ramsey Island

Ordnance Survey places 22 postcodes in Ramsey Island 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 783 properties in the EA dataset's likelihood bands.

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.

Flood warning areas near Ramsey Island

9 Environment Agency flood warning areas lie within 10 km of Ramsey Island. The EA has issued 747 flood warnings and alerts for them since 2006, most recently on 26 Oct 2026.

• The south bank of the Blackwater estuary from Maylandsea to St Peters Flat, including Osea Island
  1 warning or alert since 2006, latest Dec 2013 1.1 km
• The area of Tollesbury from Salcott Channel, including Old Hall Creek and adjacent marshland towards Goldhangar
  1 warning or alert since 2006, latest Dec 2013 4.9 km
• The Essex coast from Clacton to St Peters Flat, including Jaywick, Brightlingsea, Mersea Island, Heybridge, Maldon and the Colne and Blackwater estuaries
  547 warnings and alerts since 2006, latest Oct 2026 6.2 km
• The south bank of the Blackwater estuary from Maldon to Maylandsea, including Northey Island
  3 warnings and alerts since 2006, latest Dec 2013 7.2 km
• Salcott cum Virley, and surrounding marshland
  no warning on record since 2006 7.4 km
• The Essex coast from St Peters Flat to Shoeburyness, including Burnham-on-Crouch, South Woodham Ferrers, Hullbridge and the Crouch and Roach estuaries
  178 warnings and alerts since 2006, latest Oct 2026 7.8 km
• The Essex coast from St Peters Flat to Burnham-on-Crouch, including Dengie Marshes
  1 warning or alert since 2006, latest Dec 2013 7.9 km
• The north bank of the Blackwater estuary from Goldhanger to Maldon, including Heybridge Basin
  3 warnings and alerts since 2006, latest Dec 2013 8.1 km
• Maldon Town waterfront from Anchorage Hill, including Chandlers Quay, The Hythe, Promenade Park and Blackwater Leisure Centre
  13 warnings and alerts since 2006, latest Oct 2026 9.1 km

Recorded floods near Ramsey Island

Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of Ramsey Island, most recent first. Records, not floods: no outline on the record is not evidence a place has not flooded. See them on the map →

• 5 Dec 2013 — 2013 Flood Outline Sea
• 9 Jan 2009 — 2009 Flood Outline Main river
• 12 Jan 1968 — 1968 September Flood Outline Main river
• 1 Jun 1958 — 1958 Flood Outline Other
• 31 Jan 1953 — 1953 Coast Flood Outline Essex Sea
• 13 Feb 1947 — 1947 Flood Outline Main river

Rainfall near Ramsey Island

Ramsey Island gets about 526 mm of rain a year on average (wettest month October, 57 mm; driest March, 31 mm). That is 55% drier than the UK as a whole, which averages 1,163 mm a year. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 2.9 km from the place centre.

The nearest rain gauge, Rainfall station (3.9 km away), recorded 3.0 mm in the last 24 hours and 33.6 mm in the last 7 days (latest reading 35 min ago).

At-risk postcodes in Ramsey Island

Every postcode Ordnance Survey places in Ramsey Island that appears in the EA's rivers-and-sea dataset, worst band first. Each links to its own flood-risk page.

High likelihood (2)

Low likelihood (4)

Very low likelihood (16)

Postcode districts

Sources

FloodRadar summarises public flood data. It is not a flood-risk survey of any property, and it does not replace official GOV.UK flood warnings or the GOV.UK long-term flood risk service.