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Conditions are worth watching: the Environment Agency has a Flood Alert in force for Tidal Thames riverside from Putney Bridge to Teddington Weir — flooding is possible from 02:15 AM to 04:15 AM on Saturday 10th October. Flooding is possible — be prepared and keep an eye on updates.
Updated 2026-10-09 18:46:08 UTC · Official GOV.UK warnings · Flood preparation & help guide
North Harrow is a suburban area of North West London, situated north-west of central Harrow within the London Borough of Harrow. Its residential roads have expanded from North Harrow tube station, a station on the Metropolitan line of the London Underground which is one stop away from Harrow-on-the-Hill station in Harrow town centre. Before North Harrow tube station was opened and the suburb developed, the area was known as Hooking Green.
Towns and villages near North Harrow 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 · 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 Yeading Brook, about 10 m from the middle of North Harrow's gauges. It flows into the River Crane about 15 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 Yeading Brook nearest the middle of North Harrow'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.
North Harrow is monitored by 1 Environment Agency river level station on the Yeading Brook, in Greater London. Water levels are updated every 15 minutes, providing real-time flood monitoring for the area.
The Yeading Brook is monitored by 1 station (Harrow, Village Way). 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 North Harrow. When the EA issues a flood warning for any of these areas, it will appear on this page. These include: The Yeading Brooks East and West at Ruislip and Harrow; The River Pinn at Pinner, Harrow; Yeading Brook West at Ruislip Manor including North Harrow, Ruislip Gardens and North Hillingdon; The River Pinn at Eastcote Village.
There are 6 storm overflows within 5km of North Harrow. None of the 4 with a reporting monitor are currently discharging (2 have no live status right now). Enable "Sewage" on the map above to see their locations.
Each has its own page of live status and past discharges:
If flooding is forecast in North Harrow, 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.
North Harrow 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), 0.4 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 Tidal Thames riverside from Putney Bridge to Teddington Weir — flooding is possible from 02:15 AM to 04:15 AM on Saturday 10th October. Flooding is possible — be prepared and keep an eye on updates.
North Harrow has river level monitoring on Yeading Brook — 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 4 recorded flood extents around the town centre since 1703, most recently in 2016. 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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