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No property in an EA risk band
No property in LN11 9RH appears in the Environment Agency's rivers-and-sea flood-risk dataset. That dataset covers one of five flood sources. It is area-level, it covers rivers and the sea only, and it is never proof a place cannot flood — surface water, groundwater, sewers and reservoirs are assessed separately. See the at-risk postcodes in LN11 or get the full picture below.
LN11 9RH gets about 730 mm of rain a year on average (wettest month November, 74 mm; driest March, 43 mm). That is 37% drier than the UK as a whole, which averages 1,163 mm a year.
A thirty-year average for the surrounding area, not a measurement at this address and not a flood risk on its own: a dry area floods when a storm sits over it, and a wet one may drain away perfectly well. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 1.9 km away. Average rainfall: HadUK-Grid v1.3.2, Met Office. Contains public sector information licensed under the Open Government Licence v3.0.
The ground here sits at about 150 m above sea level and falls 59 m across the surrounding 800 m. Surface water reaching this point runs off ground lying to the north-north-east, 5.0 m higher.
The river map has no watercourse within 1 km of the centre of LN11 9RH.
That means this spot is not on the river map, not that there is no water here: Ordnance Survey’s river map (OS Open Rivers) leaves out small streams, ditches and culverts. Contains OS data © Crown copyright and database rights 2026.
Because 4 recorded flood outlines mapped nearby.
The map above shows the real EA rivers & sea likelihood cells around LN11 9RH. The small panels are illustrative previews of the report's per-layer map views — the full report draws each layer for real, plus recorded extents, defences and a building picker on an interactive map.
Warnings cover flood areas, not individual addresses.
| Date | Mapped flood extent | Approx. distance |
|---|---|---|
| Feb 2020 | 2020 February Flood Incident - Storm Dennis | ~74.2 km |
| Nov 2019 | 2019 November Flood Incident | ~78.2 km |
| Dec 2013 | LNA_2013_12_Tidal_Witham_Haven | ~32.2 km |
| Jan 1953 | LNA_1953_01_Lincolnshire Coastline | ~16.5 km |
These are extents the Environment Agency has mapped, not a list of every flood. Records, not floods: no outline on the record is not evidence a place has not flooded. The full report tests whether any extent covered the exact spot.
| Gauge | River | Distance | Typical high | Highest on record |
|---|---|---|---|---|
| GOULCEBY GS WITS | — | 3.3 km | — | — |
| Goulceby | River Bain | 3.3 km | 0.35 m | 1.19 m |
| LOUTH RIVER LUD GS | — | 9.7 km | — | — |
| Louth | River Lud | 9.7 km | 0.40 m | 1.17 m |
Live levels, predictions and rain-response behaviour are on each gauge's page and in the property report.
No mapped flood-defence assets within 500 m of the postcode centre. Defences reduce risk, never remove it.
The interactive flood-risk map with a building picker (your exact house, not the postcode), the 2050s climate view, surface-water and planning flood zones at your building, exact recorded-flood distances, year-by-year warning charts, watercourses including culverted streams, an insurance outlook with the Flood Re rules, and a printable document with every dataset receipt — start with the free preview, unlock for £19.
At-risk postcodes near LN11 9RH — all in the LN11 district.
© 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. Recorded Flood Outlines and warning history © Environment Agency copyright and/or database right 2025. Storm-overflow figures: EA Event Duration Monitoring (England); live overflow status © the water companies, incl. Dŵr Cymru Welsh Water and Scottish Water. Flood defences © Environment Agency (OGL v3). This page summarises public area-level data — it is not a flood-risk survey and not a substitute for the official GOV.UK service. All data sources & licences. More postcodes: the LN11 district.