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No official flood warning is active nearby and the closest river stations are within normal ranges.
Updated 2026-10-09 13:00:28 UTC · Official GOV.UK warnings · Flood preparation & help guide
Northolt is a town in West London, England, spread across both sides of the A40 trunk road. It is 11 mi (17.7 km) west-northwest of Charing Cross and is one of the seven major towns that make up the London Borough of Ealing. It had a population of 30,304 at the 2011 UK census.
Towns and villages near Northolt with a page of their own: the homes in a flood risk area there, the nearest river gauges, and recorded floods.
Harrow · Hayes · Ealing · New Denham · Isleworth · Bushey
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, about 50 m from the middle of Northolt's gauges. It flows into Yeading Brook about 2.3 km downstream.
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 Northolt'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.
Northolt is monitored by 2 Environment Agency river level stations on the The Roxbourne, the Yeading Brook (Eastern Arm), in Greater London. Water levels are updated every 15 minutes, providing real-time flood monitoring for the area.
The The Roxbourne is monitored by 1 station (Harrow, Thistledene Avenue). The Yeading Brook (Eastern Arm) is monitored by 1 station (Northholt, Yeading East). 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 Northolt. When the EA issues a flood warning for any of these areas, it will appear on this page. These include: The Yeading Brook East at South Ruislip; Yeading Brook West at Ruislip Manor including North Harrow, Ruislip Gardens and North Hillingdon; The Yeading Brooks East and West at Ruislip and Harrow; The Yeading Brook at Hillingdon including Yeading.
There are 8 storm overflows within 5km of Northolt. None of the 2 with a reporting monitor are currently discharging (6 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 Northolt, 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.
Northolt gets about 675 mm of rain a year on average (wettest month November, 73 mm; driest March, 43 mm). That is 42% 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), 2.3 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: Normal. No official flood warning is active nearby and the closest river stations are within normal ranges.
Northolt has river level monitoring on The Roxbourne, Yeading Brook (Eastern Arm) — 2 monitoring stations 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 6 recorded flood extents around the town centre since 1703, most recently in 2024. 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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