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Thornton Heath water level

River gauge, Norbury Brook, Greater London, United Kingdom

Directions

Right now

Normal for mid-October

Water level

1.00m Up 0.01 m over the last 24 hours

1.0 1.5 2.0 2.5 Highest onrecord 2.53 m Lowest on record 0.93 m

History

History
1.01.2mOct 12Oct 14Oct 16Oct 17Oct 19Bottom of normal range1.01.2mOct 12Oct 16Oct 19Bottom of normal range
1.01.2mSep 19Sep 27Oct 4Oct 12Oct 19Bottom of normal range1.01.2mSep 19Oct 4Oct 19Bottom of normal range
1.01.2mOct 2025Jan 2026Apr 2026Jul 2026Oct 2026Bottom of normal range1.01.2mOct 2025Apr 2026Oct 2026Bottom of normal range
1.01.2mJanMarMayJulSepNov20261.01.2mJanAprJulOct2026

20252026

Water level Normal range (10–90 %) Top of normal rangeBottom of normal range

What this means

The gauge at Thornton Heath reads 1.00 m, a normal level for mid-October.

The median for mid-October is 0.98 m, based on 21 years of readings, so the river level is 0.01 m above typical. On the same day last year the reading was 0.97 m, a difference of +0.03 m.

The water is rising: up 0.01 m over the past 24 hours. Over the past 30 days it has moved between 0.97 m and 1.33 m.

Autumn rain usually starts to lift rivers again after the summer low.

Compared with 21 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
0.98 m0.01 m above the median for this date
Normal for this date
0.96 m – 1.11 m8 years in 10 fall in this range (21 years of records)
Normal range
0.96 m – 2.34 m
Same day last year
0.97 m+0.03 m
Lowest and highest in 30 days
0.97 m – 1.33 m
Lowest and highest in 12 months
0.95 m – 1.31 m
Highest on record
2.53 mJuly 20, 2007
Lowest on record
0.93 mMay 1, 2003

On the river at Thornton Heath

A level in the typical range is usually good news for both anglers and canoeists, but conditions can change quickly after rain in the hills.

Flood warnings for the area come from the Environment Agency.

Weather at the gauge

Rain in the last 3 days: 2.8 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 14° 8° 7.0 mm, 92% Wind 17 km/h
19 Mon 14° 9° 0.9 mm, 87% Wind 13 km/h
20 Tue 12° 11° 9.0 mm, 55% Wind 7 km/h
21 Wed 14° 8° 3.0 mm, 40% Wind 18 km/h
22 Thu 14° 7° 2.4 mm, 49% Wind 14 km/h
23 Fri 12° 8° 56 mm, 86% Wind 28 km/h
24 Sat 10° 5° – Wind 18 km/h

Forecast: Open-Meteo

Sunrise 07:31 AM Sunset 06:01 PM Daylight 10 hr, 30 min First quarter 60%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Waddon PondsRiver gauge, River Wandle −0.11 m Very low −0.01 m 3.1 km
Beddington ParkRiver gauge, River Wandle 0.24 m Normal ±0 3.7 km
Abercairn RoadRiver gauge, River Graveney 0.88 m Low +0.02 m 4.0 km
Upper Elmers EndRiver gauge, St James Stream 0.37 m High +0.01 m 4.2 km
HackbridgeRiver gauge, River Wandle 1.12 m Lowest on record ±0 4.8 km
BeckenhamRiver gauge, The Beck 0.48 m Normal +0.02 m 5.2 km
Carshalton PondsRiver gauge, River Wandle 0.07 m Low ±0 5.5 km
Longley RoadRiver gauge, River Graveney 0.07 m Normal +0.01 m 6.1 km

Questions and answers

Is Norbury Brook at Thornton Heath higher than last year?

Yes, it is 0.03 m higher than on the same day last year, when the reading was 0.97 m.

What is a normal level for Norbury Brook at Thornton Heath in mid-October?

The median for mid-October is 0.98 m. In 8 years out of 10 the reading falls between 0.96 m and 1.11 m, based on 21 years of records.

Is the river level the same as the depth of the water?

No. The reading is measured from a fixed zero mark at the gauge, so 1.00 m on the gauge does not mean the water is that deep.

What is the water level of Thornton Heath today?

On 19 Oct 2026, 15:15 BST, the water level was 1.00 m. Up 0.01 m over the last 24 hours.

Is Thornton Heath rising or falling?

Up 0.01 m over the last 24 hours. Up 0.01 m over the last 7 days.

Is the level of Thornton Heath normal?

Normal for mid-October. Compared with 21 years of daily readings for this time of year.

What is the highest water level ever recorded at Thornton Heath?

The highest level on record is 2.53 m on July 20, 2007. The lowest is 0.93 m on May 1, 2003.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
Environment Agency
Station code
ea:4182TH (Agency page)
Coordinates
51.39476, -0.09730 (WGS84)
Vertical datum
station datum
Update interval
every 15 minutes
Licence
Open Government Licence v3.0. Contains Environment Agency data licensed under the Open Government Licence v3.0

Published series

ParameterLast valueTime (UTC)Quality
Water level 1.00 m 2026-10-19 14:15 Provisional

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How to cite

Environment Agency: Thornton Heath (ea:4182TH). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-kingdom/greater-london/thornton-heath

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.