Environment Agency directory · London
Flood warnings and river levels in Greater London
Current warnings are checked live. Monitoring areas, stations and watercourses below are directory records and may be listed even when no warning is in force.
- Designated areas
- 140
- Level stations
- 102
- Named watercourses
- 56
- Directory snapshot
- 6 Aug 2026, 01:13
Live Environment Agency status
Current flood warnings in Greater London
Directory metadata refreshed 6 Aug 2026, 01:13 (UK time). Warning status is requested separately from the EA feed.
Permanent EA coverage
Designated monitoring areas in Greater London
These are predefined places where the Environment Agency can issue a Flood Warning or Flood Alert. The category describes how EA organises the area; it does not show whether an alert is active now. Similar names can refer to different official stretches of the same river.
| Official area name | Watercourse / coast | EA area category |
|---|---|---|
| The Silk Stream and the Deans, Edgware, Dollis, Mutton, Wembley and Wealdstone Brooks and their tributaries EA ref 062WAF38BrentBks | Silk Stream; Dollis Brook; Deans Brook; Edgware Brook; Mutton Brook; Wealdstone Brook; Wembley Brook | Designated alert area Coverage type—not a current warning |
| The Salmons Brook at Grange Park and Lower Edmonton including World's End EA ref 062FWF53Salmons | Salmons Brook | Designated warning area Coverage type—not a current warning |
| The River Brent in the London Borough of Brent including Tokyngton, Stonebridge and Alperton EA ref 062FWF38LBBrent | River Brent | Designated warning area Coverage type—not a current warning |
| The River Brent from Hendon to Brentford including Brent Cross, Tokyngton, Alperton, Greenford and Hanwell EA ref 062WAF38Brent | River Brent | Designated alert area Coverage type—not a current warning |
| River Thames at Thames Ditton Island including Boyle Farm Island EA ref 061FWB23DitIslnd | River Thames | Designated warning area Coverage type—not a current warning |
| River Thames at Thames Ditton Island including Boyle Farm Island EA ref 061WAB23DitIslnd | River Thames | Designated alert area Coverage type—not a current warning |
| River Wandle at Beddington Park including Hackbridge and Waddon, London Boroughs of Sutton and Croydon EA ref 064FWF41BeddPark | River Wandle | Designated warning area Coverage type—not a current warning |
| River Wandle area in the London Boroughs of Wandsworth, Merton, Lambeth, Croydon and Sutton. Including the Norbury Brook from Thornton Heath to Tooting EA ref 064WAF41Wandle | River Wandle | Designated alert area Coverage type—not a current warning |
| River Thames from Shepperton to West and East Molesey including Hamm Court, Walton-on-Thames and Sunbury EA ref 061WAF23Shepprtn | River Thames | Designated alert area Coverage type—not a current warning |
| River Wandle at Wandsworth including King Georges Park and Earlsfield, London Boroughs of Wandsworth and Merton EA ref 064FWB41Wndswrth | River Wandle | Designated warning area Coverage type—not a current warning |
| River Wandle at Morden, including Morden Hall Park, London Borough of Merton EA ref 064FWF41Morden | River Wandle | Designated warning area Coverage type—not a current warning |
| River Graveney at Tooting and Colliers Wood, London Boroughs of Wandsworth and Merton EA ref 064FWF41Graveney | River Wandle | Designated warning area Coverage type—not a current warning |
Showing 12 of 140 matching areas
River-level monitoring
Stations and readings in Greater London
Blue points are monitoring instruments—not flood incidents. Open a station for recent readings, time checked and nearby context.
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Pinner, Eastcote Road
River Pinn
Pinn catchment
View readings and location →Kingston
River Thames
Thames from Hurley to Teddington catchment
View readings and location →Walthamstow, Low Hall
River Lee
Lower Lee catchment
View readings and location →Chingford
Ching Brook
Lower Lee catchment
View readings and location →Edgware Hospital
Silk Stream
Brent (Brooks) catchment
View readings and location →Winsford Road
River Pool
London catchment
View readings and location →Beddington Park
River Wandle
London catchment
View readings and location →Hampstead Suburb
Mutton Brook
Brent (Brooks) catchment
View readings and location →Northholt, Yeading East
Yeading Brook (Eastern Arm)
Crane catchment
View readings and location →Westminster
Thames Tideway
London catchment
View readings and location →Trowlock Island
River Thames
Thames from Hurley to Teddington catchment
View readings and location →Gosshill Road
Kyd Brook
London catchment
View readings and location →Showing 12 of 102 matching stations
Directory index
Watercourses associated with Greater London
Rivers, streams, drains and coastal waters named in EA area or station records. Inclusion does not mean the watercourse is currently high or flooding.
- Beam
- Beck
- Beverley Brook
- Brent
- Cannon Brook
- Chaffinch Brook
- Ching Brook
- Deans Brook
- Dollis Brook
- East Pyl Brook
- Edgware Brook
- Frays River
- Groundwater Level
- Hogsmill
- Hogsmill River
- Ingrebourne
- Kenton Brook
- Kyd Brook
- Loxford Water
- Mutton Brook
- Norbury Brook
- Ply Brook
- Pool River
- Pyl Brook
Check property-level risk before buying or insuring
Our directory lists 140 Environment Agency warning and alert areas associated with Greater London. The count does not determine the risk to a specific address. Use the postcode checker and official long-term flood-risk service, then confirm cover with your insurer or a qualified professional where necessary.