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Conditions are worth watching: the Environment Agency has a Flood Alert in force for Tidal Thames riverside from the Thames Barrier to Putney Bridge — flooding is possible from 01:00 AM to 03:00 AM on Saturday 10th October. Flooding is possible — be prepared and keep an eye on updates.
Updated 2026-10-10 04:45:01 UTC · Official GOV.UK warnings · Flood preparation & help guide
Coldblow is a village in South East London within the London Borough of Bexley. It is located south east of Bexleyheath and south west of Dartford, adjacent to the Greater London boundary with the county of Kent.
Towns and villages near Coldblow with a page of their own: the homes in a flood risk area there, the nearest river gauges, and recorded floods.
Bexley · Erith · Dartford · Purfleet-on-Thames · Swanscombe · Woolwich · West Thurrock · Dagenham
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.
Two mapped watercourses are about the same distance from the middle of Coldblow's gauges: the River Cray (about 10 m) and the River Shuttle (about 20 m), so this page cannot say which one is nearer to you.
Distances along the river are from the point on each watercourse nearest the middle of Coldblow'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.
Coldblow is monitored by 1 Environment Agency river level station on the River Cray, in Greater London. Water levels are updated every 15 minutes, providing real-time flood monitoring for the area.
The River Cray is monitored by 1 station (Hall Place). 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 Coldblow. When the EA issues a flood warning for any of these areas, it will appear on this page. These include: River Cray from St Mary's Cray to Crayford, including Hall Place and the River Shuttle from Blackfen through Sidcup to Old Bexley including Lamorbey Park; River Cray in St Marys Cray, St Pauls Cray, Foots Cray, Sidcup, North Cray, Old Bexley, Hall Place and Crayford to the River Darent; River Shuttle at Blackfen, Sidcup Golf Course, Lamorbey Park, Sidcup and Old Bexley to Hall Place; Areas at risk from Groundwater flooding including Caterham Bourne, Coulsdon Bourne, Beddington, Carshalton, Coulsdon, Kenley, Purley, South Croydon, Whyteleafe, Bromley, Bexley, Lewisham, Greenwich, Epsom and Ewell..
There are 2 storm overflows within 5km of Coldblow. None of the 2 with a reporting monitor are currently discharging. 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 Coldblow, 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.
Coldblow gets about 610 mm of rain a year on average (wettest month October, 65 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: Watch. Conditions are worth watching: the Environment Agency has a Flood Alert in force for Tidal Thames riverside from the Thames Barrier to Putney Bridge — flooding is possible from 01:00 AM to 03:00 AM on Saturday 10th October. Flooding is possible — be prepared and keep an eye on updates.
Coldblow has river level monitoring on River Cray — 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 2 recorded flood extents around the town centre since 1703, most recently in 1977. 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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