Great Yeldham water level

Name: Great Yeldham water level (Environment Agency)
Creator: Environment Agency
License: https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/

River gauge, River Colne, Essex, United Kingdom

Directions

Within the normal range

Water level

0.11m Steady over the last 24 hours

Measured 18 Oct 2026, 05:00 BST (16 hours ago)

History

7 days

Water level Top of normal rangeBottom of normal range

What this means

The River Colne at Great Yeldham is at 0.11 m, within its typical range.

The usual range here runs from 0.08 m to 1.45 m.

It has barely moved over the past 24 hours. In the last month it has stayed between 0.09 m and 0.12 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: 0.08 m – 1.45 m
Highest on record: 1.50 mNovember 2, 2023
Lowest on record: 0.06 mJuly 11, 2023

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 Colne

The Colne is a river and a tributary of the River Thames in England. Just over half its course is in south Hertfordshire. Downstream, it forms the boundary between Buckinghamshire and the London Borough of Hillingdon. The confluence with the River Thames is on the Staines reach at Staines-upon-Thames.

Weather at the gauge

Rain in the last 3 days: 1.3 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 14° 8° 5.6 mm, 100% Wind 24 km/h

19 Mon 14° 10° 3.5 mm, 96% Wind 12 km/h

20 Tue 13° 11° 7.1 mm, 53% Wind 17 km/h

21 Wed 13° 7° 2.7 mm, 51% Wind 27 km/h

22 Thu 13° 5° 0.9 mm, 36% Wind 23 km/h

23 Fri 12° 6° 45 mm, 73% Wind 35 km/h

24 Sat 10° 4° – Wind 28 km/h

Forecast: Open-Meteo

Sunrise 07:28 AM Sunset 05:59 PM Daylight 10 hr, 32 min First quarter 52%

Map

Other gauges on the River Colne

Gauge	Level	Compared with normal	24 hours	Distance
Poole StreetRiver gauge, River Colne	0.07 m	Normal	±0	4.2 km
Earls ColneRiver gauge, River Colne	0.11 m	Very low	−0.01 m	15 km
LexdenRiver gauge, River Colne	0.20 m	Very low	±0	26 km
London ColneyRiver gauge, River Colne	1.09 m	Normal	±0	67 km
WatfordRiver gauge, River Colne	0.18 m	Normal	±0	75 km
Moor LaneRiver gauge, River Colne	7.46 m	Normal	+0.01 m	81 km
Denham ColneRiver gauge, River Colne	0.14 m	Normal	±0	87 km
WillowbankRiver gauge, River Colne	0.83 m	Very low	−0.01 m	88 km
Iver, Clisbys BridgeRiver gauge, River Colne	0.35 m	Normal	−0.02 m	90 km
Farlows BridgeRiver gauge, River Colne	0.33 m	Very low	±0	91 km
West DraytonRiver gauge, River Colne	0.40 m	Very low	±0	92 km
Thorney Mill Road, West Drayton (Temporary)River gauge, River Colne	−0.01 m	Lowest on record	−0.01 m	92 km

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Broad GreenRiver gauge, Bumpstead Brook	0.04 m	Normal	±0	5.9 km
KedingtonRiver gauge, River Stour	0.21 m	Normal	±0	6.4 km
SturmerRiver gauge, Stour Brook	0.11 m	Normal	−0.01 m	6.5 km
WestmillRiver gauge, River Stour	0.22 m	Normal	−0.01 m	11 km
Copford HallRiver gauge, River Pant	0.27 m	High	±0	11 km
GlemsfordRiver gauge, River Glem	0.10 m	Normal	±0	13 km
Long MelfordRiver gauge, Chad Brook	0.20 m	Normal	+0.01 m	14 km
LamarshRiver gauge, River Stour	0.37 m	Very low	+0.02 m	15 km

Questions and answers

What is the typical range for the River Colne at Great Yeldham?

The Environment Agency gives a typical range of 0.08 m to 1.45 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 0.11 m on the gauge does not mean the water is that deep.

What is the water level of Great Yeldham today?

On 18 Oct 2026, 05:00 BST, the water level was 0.11 m. Steady over the last 24 hours.

Is Great Yeldham rising or falling?

Steady over the last 24 hours.

Is the level of Great Yeldham 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 Great Yeldham?

The highest level on record is 1.50 m on November 2, 2023. The lowest is 0.06 m on July 11, 2023.

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:E31349 (Agency page)
Coordinates: 52.02820, 0.54189 (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

Parameter	Last value	Time (UTC)	Quality
Surface elevation	–	–	–
Water level	0.11 m	2026-10-18 04:00	Provisional

Download

Embed this gauge

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

<iframe src="https://nivelmap.com/embed/3740?lang=en" width="360" height="230" style="border:0;max-width:100%" loading="lazy" title="Great Yeldham water level"></iframe>

How to cite

Environment Agency: Great Yeldham (ea:E31349). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-kingdom/essex/great-yeldham

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