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Free Prae Road water level

River gauge, Chertsey Bourne, Surrey, United Kingdom

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Right now

High for mid-October

Water level

1.06m Steady over the last 24 hours

1 2 Highest onrecord 2.63 m Lowest on record 0.43 m

History

History
1.01.5mOct 11Oct 12Oct 14Oct 16Oct 18Top of normal rangeBottom of normal range1.01.5mOct 11Oct 14Oct 18Top of normal rangeBottom of normal range
1.01.5mSep 18Sep 25Oct 3Oct 10Oct 18Top of normal rangeBottom of normal range1.01.5mSep 18Oct 3Oct 18Top of normal rangeBottom of normal range
1.01.52.0mOct 2025Jan 2026Apr 2026Jul 2026Oct 2026Top of normal rangeBottom of normal range1.01.52.0mOct 2025Apr 2026Oct 2026Top of normal rangeBottom of normal range
1.01.52.0mJanMarMayJulSepNov20261.01.52.0mJanAprJulOct2026

20252026

Water level Normal range (10–90 %) Top of normal rangeBottom of normal range

What this means

The Chertsey Bourne at Free Prae Road is above normal at 1.06 m.

The median for mid-October is 0.88 m, based on 21 years of readings, so the river level is 0.19 m above typical. On the same day last year the reading was 0.98 m, a difference of +0.09 m.

It has barely moved over the past 24 hours. In the last month it has stayed between 0.85 m and 1.16 m.

Autumn rain usually starts to lift rivers again after the summer low.

Compared with 21 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
0.88 m0.19 m above the median for this date
Normal for this date
0.74 m – 1.23 m8 years in 10 fall in this range (21 years of records)
Normal range
0.72 m – 1.60 m
Same day last year
0.98 m+0.09 m
Lowest and highest in 30 days
0.85 m – 1.16 m
Lowest and highest in 12 months
0.91 m – 2.14 m
Highest on record
2.63 mJanuary 2, 2003
Lowest on record
0.43 mOctober 18, 2000

Fishing and paddling

Coloured, rising water usually ends the fishing for a day or two. As it fines down, it can bring fresh fish up the river.

Flood alerts and warnings come from the Environment Agency.

Weather at the gauge

Rain in the last 3 days: 2.9 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 14° 8° 3.5 mm, 83% Wind 22 km/h
19 Mon 15° 9° 0.4 mm, 81% Wind 16 km/h
20 Tue 13° 11° 11 mm, 63% Wind 8 km/h
21 Wed 14° 8° 3.0 mm, 44% Wind 26 km/h
22 Thu 15° 6° 2.5 mm, 53% Wind 13 km/h
23 Fri 12° 8° 41 mm, 78% Wind 32 km/h
24 Sat 11° 5° – Wind 20 km/h

Forecast: Open-Meteo

Sunrise 07:31 AM Sunset 06:05 PM Daylight 10 hr, 34 min First quarter 46%

Map

Other gauges on the Chertsey Bourne

Gauge Level Compared with normal 24 hours Distance
Guildford StreetRiver gauge, Chertsey Bourne 0.47 m Normal ±0 0.5 km
Trumps GreenRiver gauge, Chertsey Bourne 0.76 m Normal ±0 4.4 km

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Chertsey LockRiver gauge, River Thames 0.20 m Normal +0.02 m 1.1 km
AddlestoneRiver gauge, Addlestone Bourne 0.31 m Low −0.01 m 2.1 km
WeybridgeRiver gauge, River Wey 1.02 m Normal ±0 2.9 km
Shepperton LockRiver gauge, River Thames 0.14 m Normal +0.01 m 3.0 km
Penton HookRiver gauge, River Thames 0.15 m Normal −0.01 m 3.1 km
Knowle GreenRiver gauge, River Ash 0.51 m Normal ±0 5.0 km
West Byfleet BridgeRiver gauge, Rive Ditch 1.50 m Normal +0.01 m 5.0 km
StainesRiver gauge, River Thames 2.66 m Low −0.01 m 5.1 km

Questions and answers

Is the Chertsey Bourne at Free Prae Road higher than last year?

Yes, it is 0.09 m higher than on the same day last year, when the reading was 0.98 m.

What is a normal level for the Chertsey Bourne at Free Prae Road in mid-October?

The median for mid-October is 0.88 m. In 8 years out of 10 the reading falls between 0.74 m and 1.23 m, based on 21 years of records.

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 1.06 m on the gauge does not mean the water is that deep.

What is the water level of Free Prae Road today?

On 18 Oct 2026, 05:00 BST, the water level was 1.06 m. Steady over the last 24 hours.

Is Free Prae Road rising or falling?

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

Is the level of Free Prae Road normal?

High for mid-October. Compared with 21 years of daily readings for this time of year.

What is the highest water level ever recorded at Free Prae Road?

The highest level on record is 2.63 m on January 2, 2003. The lowest is 0.43 m on October 18, 2000.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
Environment Agency
Station code
ea:2937TH (Agency page)
Coordinates
51.38633, -0.50136 (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

ParameterLast valueTime (UTC)Quality
Water level 1.06 m 2026-10-18 04:00 Provisional

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How to cite

Environment Agency: Free Prae Road (ea:2937TH). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-kingdom/surrey/free-prae-road

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.