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No official flood warning is active nearby and the closest river stations are within normal ranges.
Updated 2026-10-10 12:32:41 UTC · Official GOV.UK warnings · Flood preparation & help guide
Charlton is an area of southeast London, England, in the Royal Borough of Greenwich. It is east of Greenwich and west of Woolwich, on the south bank of the River Thames, 7.2 miles (11.6 km) southeast of Charing Cross. An ancient parish in the county of Kent, it became part of the metropolitan area of London in 1855 and is home to Charlton Athletic and Charlton House.
Towns and villages near Charlton with a page of their own: the homes in a flood risk area there, the nearest river gauges, and recorded floods.
Hallsville Quarter · Woolwich · West Ham · East Ham · Lewisham · Hackney · Barking · Bermondsey
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 Woolwich Reach (River Thames) (tidal here), about 20 m from the middle of Charlton'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 Woolwich Reach (River Thames) nearest the middle of Charlton'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.
Charlton is monitored by 1 Environment Agency river level station on the Thames Tideway, in Greater London. Water levels are updated every 15 minutes, providing real-time flood monitoring for the area.
The Thames Tideway is monitored by 1 station (Charlton). 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 Charlton. When the EA issues a flood warning for any of these areas, it will appear on this page. These include: River Thames from Woolwich Arsenal to Deptford Creek including New Charlton, the Greenwich Peninsula, the Royal Naval College and Greenwich Town Centre; River Thames from Beckton Sewage Works to the River Lee including Beckton Gas Works, London City Airport, the ExCeL Centre, areas around the King George V, Royal Albert and Royal Victoria docks and Canning Town; The Lower River Lee from West Ham to Canning Town; River Thames at the Isle of Dogs south of South Dock including areas around West India and Millwall Docks, Cubitt Town, and Mudchute.
There are 17 storm overflows within 5km of Charlton. None of the 15 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 Charlton, 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.
Charlton gets about 601 mm of rain a year on average (wettest month October, 66 mm; driest March, 36 mm). That is 48% 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), 3.0 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.
Charlton has river level monitoring on Thames Tideway — 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 1953. 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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