St Johns Weir water level

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

River gauge, Sherston Avon, Wiltshire, United Kingdom

Directions

Within the normal range

Water level

0.10m Steady over the last 24 hours

Measured 18 Oct 2026, 10:15 BST (33 min ago)

History

7 days

Water level Top of normal rangeBottom of normal range

What this means

The Sherston Avon at St Johns Weir is at 0.10 m, within its typical range.

The usual range here runs from 0.09 m to 0.54 m.

The level has held steady over the past 24 hours. In the last month it has stayed between 0.09 m and 0.10 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: 0.09 m – 0.54 m
Highest on record: 1.48 mNovember 25, 2012
Lowest on record: 0.08 mAugust 9, 2010

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

18 Sun 12° 5° 0.6 mm, 32% Wind 23 km/h

19 Mon 14° 8° 7.8 mm, 84% Wind 17 km/h

20 Tue 12° 6° 4.8 mm, 78% Wind 9 km/h

21 Wed 13° 5° 4.8 mm, 57% Wind 30 km/h

22 Thu 14° 5° 0.7 mm, 69% Wind 17 km/h

23 Fri 9° 6° 22 mm, 82% Wind 32 km/h

24 Sat 9° 4° 0.9 mm, 54% Wind 28 km/h

Forecast: Open-Meteo

Sunrise 07:38 AM Sunset 06:11 PM Daylight 10 hr, 33 min First quarter 48%

Map

Other gauges on the Sherston Avon

Gauge	Level	Compared with normal	24 hours	Distance
FossewayRiver gauge, Sherston Avon	0.17 m	Low	±0	4.4 km

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Crabb MillRiver gauge, Woodbridge Brook	0.05 m	Very low	±0	1.4 km
RodbourneRiver gauge, Gauze Brook	0.04 m	Low	±0	2.9 km
BrokenboroughRiver gauge, Tetbury Avon	0.13 m	Low	±0	3.2 km
Great SomerfordRiver gauge, River Avon	0.14 m	Very low	±0	4.8 km
SeagryRiver gauge	53.43 m	Normal	±0	6.8 km
Avon WeirRiver gauge	50.49 m	Low	+0.01 m	7.9 km
DauntseyRiver gauge, Dauntsey Brook	0.03 m	Very low	−0.02 m	8.0 km
OakseyRiver gauge, Swill Brook	−0.30 m	Lowest on record	±0	8.3 km

Questions and answers

What is the typical range for the Sherston Avon at St Johns Weir?

The Environment Agency gives a typical range of 0.09 m to 0.54 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 0.10 m on the gauge does not mean the water is that deep.

What is the water level of St Johns Weir today?

On 18 Oct 2026, 10:15 BST, the water level was 0.10 m. Steady over the last 24 hours.

Is St Johns Weir rising or falling?

Steady over the last 24 hours.

Is the level of St Johns Weir 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 St Johns Weir?

The highest level on record is 1.48 m on November 25, 2012. The lowest is 0.08 m on August 9, 2010.

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:531158 (Agency page)
Coordinates: 51.58087, -2.09482 (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	0.10 m	2026-10-18 09:15	Provisional

Download

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How to cite

Environment Agency: St Johns Weir (ea:531158). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-kingdom/wiltshire/st-johns-weir

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