Stanwell Gate 1 (Lake Offtake) water level

Name: Stanwell Gate 1 (Lake Offtake) water level (Environment Agency)
Creator: Environment Agency
License: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/

River gauge, Surrey, United Kingdom

Directions

Latest reading

Surface elevation

18.42m Up 0.06 m over the last 24 hours

Measured 19 Oct 2026, 21:45 BST (33 min ago)

History

7 days 30 days

Surface elevation

What this means

Stanwell Gate 1 (Lake Offtake) reads 18.42 m as of 19 Oct 2026, 21:45 BST. The agency publishes no normal range or warning level for this river yet, so there is nothing to judge the number against.

It has risen 0.06 m over the past 24 hours. In the last month it has stayed between 18.33 m and 18.46 m.

Over the past seven days the change adds up to +0.05 m.

The agency publishes no normal range for this gauge yet, so we show the trend only. How to read levels

Key numbers

Lowest and highest in 30 days: 18.33 m – 18.46 m
Lowest and highest in 12 months: 18.37 m – 18.41 m

Fishing and paddling

Watch the direction of travel. A rising river after rain behaves very differently from one that is dropping and clearing.

Flood alerts and warnings come from the Environment Agency.

Weather at the gauge

Rain in the last 3 days: 3.1 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

19 Mon 13° 9° 0.5 mm, 63% Wind 15 km/h

20 Tue 13° 9° 8.8 mm, 92% Wind 15 km/h

21 Wed 13° 8° 6.1 mm, 53% Wind 33 km/h

22 Thu 13° 6° 3.9 mm, 85% Wind 19 km/h

23 Fri 13° 8° 15 mm, 90% Wind 38 km/h

24 Sat 12° 6° 8.8 mm, 64% Wind 26 km/h

25 Sun 18° 12° 4.4 mm, 63% Wind 33 km/h

Forecast: Open-Meteo

Sunrise 07:33 AM Sunset 06:02 PM Daylight 10 hr, 30 min First quarter 62%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Stanwell MillRiver gauge, River Colne	0.68 m	Very high	+0.04 m	0.2 km
PoyleRiver gauge, Poyle Channel	1.50 m	Normal	+0.01 m	1.5 km
Horton MillRiver gauge, Colne Brook	0.12 m	Normal	+0.02 m	2.2 km
Staines AshRiver gauge, River Ash	0.11 m	Very high	+0.01 m	3.1 km
Staines Trading EstateRiver gauge, River Colne	1.20 m	Normal	+0.02 m	3.4 km
Pound Mill, StainesRiver gauge, Wraysbury River	0.11 m	Normal	+0.02 m	3.6 km
Hythe EndRiver gauge, Colne Brook	0.48 m	Normal	+0.03 m	3.9 km
Thorney Mill Road, West Drayton (Temporary)River gauge, River Colne	0.03 m	Lowest on record	+0.02 m	3.9 km

Questions and answers

Is Stanwell Gate 1 (Lake Offtake) really 18.42 m deep?

No. 18.42 m is the height of the water surface above sea level (or the agency's vertical datum), not the depth of the water.

What is the water level of Stanwell Gate 1 (Lake Offtake) today?

On 19 Oct 2026, 21:45 BST, the surface elevation was 18.42 m. Up 0.06 m over the last 24 hours.

Is Stanwell Gate 1 (Lake Offtake) rising or falling?

Up 0.06 m over the last 24 hours. Up 0.05 m over the last 7 days.

Is the level of Stanwell Gate 1 (Lake Offtake) normal?

The agency publishes no normal range for this gauge yet, so we show the trend only.

How often is this data updated?

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

Where does this data come from?

The values come directly from the Environment Agency, the official operator of this gauge, and are published under the Open Government Licence v3.0. We do not estimate or model live values.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: Environment Agency
Station code: ea:2868TH
Coordinates: 51.46711, -0.49979 (WGS84)
Vertical datum: ODN
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

Parameter	Last value	Time (UTC)	Quality
Surface elevation	18.42 m	2026-10-19 20:45	Provisional

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How to cite

Environment Agency: Stanwell Gate 1 (Lake Offtake) (ea:2868TH). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-kingdom/surrey/stanwell-gate-1-lake-offtake

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