Harrow, Thistledene Avenue water level

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

River gauge, The Roxbourne, Greater London, United Kingdom

Directions

Within the normal range

Water level

0.07m Up 0.03 m over the last 24 hours

Measured 20 Oct 2026, 17:15 BST (25 min ago)

History

7 days 30 days

Water level Top of normal rangeBottom of normal range

What this means

The The Roxbourne at Harrow, Thistledene Avenue is at 0.07 m, within its typical range.

The usual range here runs from 0.01 m to 1.10 m.

It has risen 0.03 m over the past 24 hours. In the last month it has stayed between 0.04 m and 0.11 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: 0.01 m – 1.10 m
Lowest and highest in 30 days: 0.04 m – 0.11 m
Lowest and highest in 12 months: 0.04 m – 0.05 m
Highest on record: 1.43 mDecember 20, 2010
Lowest on record: −0.16 mJanuary 21, 2005

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.

Weather at the gauge

Rain in the last 3 days: 1.4 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

20 Tue 13° 10° 12 mm, 100% Wind 19 km/h

21 Wed 11° 7° 8.0 mm, 80% Wind 35 km/h

22 Thu 14° 7° 8.2 mm, 87% Wind 19 km/h

23 Fri 13° 7° 19 mm, 94% Wind 37 km/h

24 Sat 12° 7° 4.2 mm, 90% Wind 30 km/h

25 Sun 16° 12° 7.0 mm, 40% Wind 17 km/h

26 Mon 17° 10° 2.0 mm, 38% Wind 23 km/h

Forecast: Open-Meteo

Sunrise 07:34 AM Sunset 06:00 PM Daylight 10 hr, 25 min Waxing gibbous 70%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Harrow, Village WayRiver gauge, Yeading Brook	0.16 m	Normal	+0.07 m	1.7 km
Northholt, Yeading EastRiver gauge, Yeading Brook (Eastern Arm)	0.13 m	High	+0.09 m	1.9 km
Pinner, Eastcote RoadRiver gauge, River Pinn	0.51 m	Very high	+0.14 m	3.0 km
Hillingdon, Gutteridge WoodRiver gauge, Yeading Brook	0.54 m	Very high	+0.13 m	3.2 km
Hillingdon, Charville LaneRiver gauge, Yeading Brook	0.55 m	High	+0.02 m	3.5 km
RuislipRiver gauge, River Pinn	0.36 m	Very high	+0.19 m	3.8 km
Pinner, Avenue RoadRiver gauge, River Pinn	0.41 m	Very high	+0.24 m	3.9 km
Pinner, Moss CloseRiver gauge, River Pinn	0.21 m	Normal	+0.07 m	4.1 km

Questions and answers

What is the typical range for the The Roxbourne at Harrow, Thistledene Avenue?

The Environment Agency gives a typical range of 0.01 m to 1.10 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 0.07 m on the gauge does not mean the water is that deep.

What is the water level of Harrow, Thistledene Avenue today?

On 20 Oct 2026, 17:15 BST, the water level was 0.07 m. Up 0.03 m over the last 24 hours.

Is Harrow, Thistledene Avenue rising or falling?

Up 0.03 m over the last 24 hours. Up 0.03 m over the last 7 days.

Is the level of Harrow, Thistledene Avenue 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 Harrow, Thistledene Avenue?

The highest level on record is 1.43 m on December 20, 2010. The lowest is −0.16 m on January 21, 2005.

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:3626TH (Agency page)
Coordinates: 51.56194, -0.37933 (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
Water level	0.07 m	2026-10-20 16:15	Provisional

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How to cite

Environment Agency: Harrow, Thistledene Avenue (ea:3626TH). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-kingdom/greater-london/harrow-thistledene-avenue

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