Portmarsh Lane water level

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

River gauge, Coney Gut, Devon, United Kingdom

Directions

Within the normal range

Water level

0.26m Up 0.17 m over the last 24 hours

Measured 17 Oct 2026, 09:30 BST (32 min ago)

History

7 days 30 days

Water level Top of normal rangeBottom of normal range

What this means

The Coney Gut at Portmarsh Lane is at 0.26 m, within its typical range.

The usual range here runs from 0.06 m to 0.50 m.

It has risen 0.17 m over the past 24 hours. In the last month it has stayed between 0.05 m and 0.67 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: 0.06 m – 0.50 m
Lowest and highest in 30 days: 0.05 m – 0.67 m
Highest on record: 2.95 mAugust 17, 2020
Lowest on record: 0.00 mOctober 9, 2002

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: 5.9 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

17 Sat 13° 6° – Wind 12 km/h

18 Sun 13° 6° – Wind 13 km/h

19 Mon 12° 9° 6.2 mm, 48% Wind 23 km/h

20 Tue 13° 6° 3.3 mm, 59% Wind 19 km/h

21 Wed 11° 7° 14 mm, 65% Wind 55 km/h

22 Thu 13° 9° 4.5 mm, 67% Wind 31 km/h

23 Fri 13° 8° 15 mm, 82% Wind 41 km/h

Forecast: Open-Meteo

Sunrise 07:43 AM Sunset 06:21 PM Daylight 10 hr, 38 min First quarter 39%

Map

Other gauges on the Coney Gut

Gauge	Level	Compared with normal	24 hours	Distance
Coney GutRiver gauge	0.48 m	Normal	±0	0.7 km

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Landkey Newland Tanners RoadRiver gauge, Halford Stream	0.16 m	Lowest on record	−0.03 m	3.9 km
Collard BridgeRiver gauge, River Yeo	0.38 m	Normal	−0.04 m	4.0 km
Plaistow MillRiver gauge, Bradiford Water	0.28 m	Normal	+0.01 m	4.9 km
SwimbridgeRiver gauge, Landkey Brook	0.05 m	Low	−0.02 m	6.2 km
Braunton Butts BridgeRiver gauge, River Caen	0.58 m	Normal	−0.05 m	8.7 km
StoneybridgeRiver gauge, River Caen	0.00 m	Normal	−0.03 m	9.7 km
UmberleighRiver gauge, River Taw	0.29 m	Low	+0.05 m	10.0 km
Bideford Elliots Kingsley RoadRiver gauge, Kenwith Stream	0.08 m	Normal	−0.12 m	12 km

Questions and answers

What is the typical range for the Coney Gut at Portmarsh Lane?

The Environment Agency gives a typical range of 0.06 m to 0.50 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 0.26 m on the gauge does not mean the water is that deep.

What is the water level of Portmarsh Lane today?

On 17 Oct 2026, 09:30 BST, the water level was 0.26 m. Up 0.17 m over the last 24 hours.

Is Portmarsh Lane rising or falling?

Up 0.17 m over the last 24 hours. Up 0.04 m over the last 7 days.

Is the level of Portmarsh Lane 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 Portmarsh Lane?

The highest level on record is 2.95 m on August 17, 2020. The lowest is 0.00 m on October 9, 2002.

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:50137 (Agency page)
Coordinates: 51.07494, -4.05092 (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	0.26 m	2026-10-17 08:30	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/1514?lang=en" width="360" height="230" style="border:0;max-width:100%" loading="lazy" title="Portmarsh Lane water level"></iframe>

How to cite

Environment Agency: Portmarsh Lane (ea:50137). Accessed October 17, 2026 via Nivelmap, https://nivelmap.com/en/united-kingdom/devon/portmarsh-lane

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