Free Prae Road water level
River gauge, Chertsey Bourne, Surrey, United Kingdom
Right now
High for mid-October
Water level
History
20252026
What this means
The Chertsey Bourne at Free Prae Road is above normal at 1.11 m.
The median for mid-October is 0.88 m, based on 21 years of readings, so the river level is 0.24 m above typical. On the same day last year the reading was 0.98 m, a difference of +0.14 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 m0.24 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+0.14 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.
Forecast: Open-Meteo
Map
Other gauges on the Chertsey Bourne
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Guildford StreetRiver gauge, Chertsey Bourne | 0.50 m | Normal | +0.01 m | 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 | 0.18 m | Normal | ±0 | 1.1 km |
| AddlestoneRiver gauge, Addlestone Bourne | 0.31 m | Low | ±0 | 2.1 km |
| WeybridgeRiver gauge, River Wey | 1.02 m | Normal | ±0 | 2.9 km |
| Shepperton LockRiver gauge, River Thames | 0.13 m | Normal | ±0 | 3.0 km |
| Penton HookRiver gauge, River Thames | 0.16 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 | 5.0 km |
| StainesRiver gauge, River Thames | 2.67 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 0.14 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 1.11 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, 20:45 BST, the water level was 1.11 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
| Parameter | Last value | Time (UTC) | Quality |
|---|---|---|---|
| Water level | 1.11 m | 2026-10-18 19:45 | Provisional |
Download
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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.
Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer