Nivelmap
EN

How to read levelsSources and methods

North America

Western Europe

Central Europe

Mediterranean

Nordic countries

Chertsey Lock water level

River gauge, River Thames, Surrey, United Kingdom

Directions

Within the normal range

Water level

0.19m Up 0.02 m over the last 24 hours

0.0 0.5 1.0 Highest onrecord 1.32 m Lowest on record -0.08 m

History

0.10.20.30.4mOct 11Oct 12Oct 14Oct 16Oct 17Top of normal rangeBottom of normal range0.10.20.30.4mOct 11Oct 14Oct 17Top of normal rangeBottom of normal range
0.10.20.30.4mSep 18Sep 25Oct 2Oct 10Oct 17Top of normal rangeBottom of normal range0.10.20.30.4mSep 18Oct 2Oct 17Top of normal rangeBottom of normal range
Water level Top of normal rangeBottom of normal range

What this means

The River Thames at Chertsey Lock is at 0.19 m, within its typical range.

The usual range here runs from 0.13 m to 0.40 m.

It has risen 0.02 m over the past 24 hours. In the last month it has stayed between 0.08 m and 0.25 m.

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

Compared with the normal range the agency publishes for this gauge. How to read levels

Key numbers

Normal range
0.13 m – 0.40 m
Lowest and highest in 30 days
0.08 m – 0.25 m
Highest on record
1.32 mFebruary 11, 2014
Lowest on record
−0.08 mNovember 24, 1996

Fishing and paddling

Paddlers and anglers can expect the river much as they know it, though a heavy shower upstream can change that within hours.

Flood alerts and warnings come from the Environment Agency.

About the River Thames

River Thames

The River Thames, or simply the Thames, known alternatively in parts as the River Isis, is a river that flows through southern England including London. At 215 miles (346 km), it is the longest river entirely in England and the second-longest in the United Kingdom, after the River Severn.

Read more on Wikipedia

Text and image from Wikipedia and Wikimedia Commons, licensed under CC BY-SA.

Weather at the gauge

Rain in the last 3 days: 2.9 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

17 Sat 14° 6° – Wind 22 km/h
18 Sun 13° 7° 2.7 mm, 66% Wind 23 km/h
19 Mon 14° 9° – Wind 11 km/h
20 Tue 14° 12° 2.1 mm, 45% Wind 11 km/h
21 Wed 13° 10° 0.9 mm, 56% Wind 19 km/h
22 Thu 15° 6° 2.3 mm, 43% Wind 17 km/h
23 Fri 14° 8° 16 mm, 74% Wind 35 km/h

Forecast: Open-Meteo

Sunrise 07:29 AM Sunset 06:07 PM Daylight 10 hr, 37 min First quarter 44%

Map

Other gauges on the River Thames

Gauge Level Compared with normal 24 hours Distance
Shepperton LockRiver gauge, River Thames 0.13 m Normal ±0 2.1 km
Penton HookRiver gauge, River Thames 0.15 m Normal −0.01 m 2.8 km
WaltonRiver gauge, River Thames 3.34 m Normal ±0 4.5 km
StainesRiver gauge, River Thames 2.66 m Low −0.01 m 4.9 km
Sunbury LockRiver gauge, River Thames 0.24 m High ±0 5.0 km
Bell WeirRiver gauge, River Thames 0.24 m Very high ±0 6.4 km
Molesey LockRiver gauge, River Thames 0.15 m Normal +0.01 m 9.7 km
Old Windsor LockRiver gauge, River Thames 0.25 m Very high ±0 9.9 km
Thames Ditton IslandRiver gauge, River Thames 4.26 m Very low −0.03 m 11 km
Teddington LockRiver gauge, River Thames −0.09 m Very low −0.03 m 12 km
KingstonRiver gauge, River Thames 4.29 m Normal −0.03 m 13 km
Windsor ParkRiver gauge, River Thames 3.30 m Normal ±0 13 km

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Free Prae RoadRiver gauge, Chertsey Bourne 1.10 m High −0.02 m 1.1 km
Guildford StreetRiver gauge, Chertsey Bourne 0.49 m Normal −0.01 m 1.4 km
AddlestoneRiver gauge, Addlestone Bourne 0.31 m Low ±0 1.9 km
WeybridgeRiver gauge, River Wey 1.02 m Normal ±0 2.5 km
Knowle GreenRiver gauge, River Ash 0.51 m Normal ±0 4.5 km

Questions and answers

What is the typical range for the River Thames at Chertsey Lock?

The Environment Agency gives a typical range of 0.13 m to 0.40 m for this gauge.

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 0.19 m on the gauge does not mean the water is that deep.

What is the water level of Chertsey Lock today?

On 18 Oct 2026, 00:15 BST, the water level was 0.19 m. Up 0.02 m over the last 24 hours.

Is Chertsey Lock rising or falling?

Up 0.02 m over the last 24 hours. Down 0.01 m over the last 7 days.

Is the level of Chertsey Lock normal?

Within the normal range. Compared with the normal range the agency publishes for this gauge.

What is the highest water level ever recorded at Chertsey Lock?

The highest level on record is 1.32 m on February 11, 2014. The lowest is −0.08 m on November 24, 1996.

How often is this data updated?

The Environment Agency publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
Environment Agency
Station code
ea:2902TH (Agency page)
Coordinates
51.39062, -0.48637 (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 0.19 m 2026-10-17 23:15 Provisional

Download

Embed this gauge

Add a live card for this gauge to your website. It updates on its own and links back here.

How to cite

Environment Agency: Chertsey Lock (ea:2902TH). Accessed October 17, 2026 via Nivelmap, https://nivelmap.com/en/united-kingdom/surrey/chertsey-lock

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.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer