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1.05

North Cheam

Pyl Brook
London catchment • North Cheam • Greater London • ID: 4045TH • Level
(35m ago) • 4 readings/hr • 171 views

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⤴ Unusual rise — FloodRadar+Top 1% rise rate for this gauge.
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Not an emergency service — if in danger call 999. Alerts rely on EA/SEPA/NRW data and are best-efforts. Terms

Current Level
1.045 mASD
▬ Steady
24h Max
1.135 mASD
24h Min
1.044 mASD
Typical Range
0.73 - 2.39
mASD
Highest Recorded
2.92 mASD
EA official record
2.92 in our data (since Oct 2000)
Current level is 36% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Falling · -0.6 cm over 5h
08 Oct 16:30 ▬ steady 1.045 mASD
08 Oct 16:15 ▬ steady 1.044 mASD
08 Oct 16:00 ▬ steady 1.045 mASD
08 Oct 15:45 ▼ -0.1 cm 1.045 mASD
08 Oct 15:30 ▲ +0.1 cm 1.046 mASD
08 Oct 15:15 ▬ steady 1.045 mASD
08 Oct 15:00 ▼ -0.1 cm 1.045 mASD
08 Oct 14:45 ▬ steady 1.046 mASD
08 Oct 14:30 ▬ steady 1.047 mASD
08 Oct 14:15 ▼ -0.2 cm 1.047 mASD
08 Oct 14:00 ▬ steady 1.049 mASD
08 Oct 13:45 ▲ +0.1 cm 1.048 mASD
08 Oct 13:30 ▼ -0.2 cm 1.047 mASD
08 Oct 13:15 ▼ -0.1 cm 1.049 mASD
08 Oct 13:00 ▬ steady 1.050 mASD
08 Oct 12:45 ▬ steady 1.051 mASD
08 Oct 12:30 ▬ steady 1.050 mASD
08 Oct 12:15 ▬ steady 1.051 mASD
08 Oct 12:00 ▬ steady 1.051 mASD
08 Oct 11:45 1.051 mASD

Station Details

  • Monitoring Station: North Cheam
  • Watercourse: Pyl Brook
  • Nearest Town: North Cheam
  • County: Greater London
  • Coordinates: 51°22'29"N 0°12'30"W (51.374843, -0.208335)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 1 Jan 2000
  • Status: Active
  • Station Type: River level station
Technical details: references, datum, range, flow archive
  • Station Reference: 4045TH
  • RLOI id: 7294 (the EA's check-for-flooding station id)
  • EA Gauge ID: 4045TH-level-stage-i-15_min-mASD
  • Parameter: Level
  • Unit: mASD
  • Typical rise rate: 1 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No
  • Catchment Area: London
  • Typical Range: 0.734 – 2.390 mASD
  • EA Cross-check: 1.04 mASD (EA at 8 Oct 16:15)

Geographic coordinates may reflect the access point for the gauge, and not the precise location in the watercourse that it is taking readings from.

Nearby Stations

Gauges connected to this river, and others nearby. A distance “by river” follows the river on the map; any other is in a straight line.

Connected downstream

Same river system, separate branch

Nearby

Distances by river: OS Open Rivers. Contains OS data © Crown copyright and database rights 2026.

💧 Storm overflows upstream of this gauge

None of the storm overflows FloodRadar holds is traced upstream of this gauge on the mapped river network. That is not the same as none: the map leaves out many small streams and culverts, so an overflow it cannot place may still drain here, and not every company publishes every overflow. Those nearby are listed below.

Nearby, connection not known

Within 6 km in a straight line, but the river map cannot say whether their water passes this gauge.

💧
Thames Water · into Beddington Effluent Carrier/Wa · 3.7 km away in a straight line · several watercourses close by, nothing to choose between them
5 spills · 14 hours in 2025
No live feed for this overflow
💧
Thames Water · into Old Pyl Ditch · 3.8 km away in a straight line · no mapped watercourse close enough to be sure
1 spill · 1 hours in 2025
Not discharging now · last
💧
Thames Water · into Green Lanes Stream · 5.0 km away in a straight line · its recorded watercourse is not the one mapped beside it
2 spills · 2 hours in 2025
Not discharging now · last
💧
Thames Water · into River Graveney · 5.9 km away in a straight line · its watercourse is not on the river map
2 spills · 2 hours in 2025
Not discharging now · last
💧
Thames Water · into Graveney · 5.9 km away in a straight line · its watercourse is not on the river map
51 spills · 92 hours in 2025
Not discharging now · last
💧
Thames Water · into Graveney · 5.9 km away in a straight line · its watercourse is not on the river map
18 spills · 21 hours in 2025
Not discharging now · last

3 other overflows within 6 km are downstream of this gauge or on another branch of the river network, so they are not listed.

These are the water companies' monitor statuses; a spill does not by itself explain a change in the gauge level. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels. Explore the sewage map →

Contains OS data © Crown copyright and database rights 2026.

Rainfall & Weather

Loading rainfall and weather data...

How often this river runs high

This gauge rarely reaches its typical high of 2.39 m: 0 days since 2017. This year so far: 0 days.

2026 0 days so far
2025 0 days
2024 0 days
2023 0 days
2022 0 days
2021 0 days
2020 0 days
2019 0 days
2018 0 days
2017 0 days

Counted from each day's highest reading. Days with missing or implausible readings are left out.

Flood history near this gauge

Official Environment Agency warnings issued since 2012 for the 9 flood areas linked to this gauge (nearest 0.9 km away).

3flood warnings 56flood alerts

Most recent flood warning: 29 Oct 2023 — Pyl Brook at North Cheam

Year by year
YearWarningsAlerts
2025 0 2
2024 0 4
2023 1 2
2022 0 5
2021 2 9
2020 0 3
2019 0 6
2018 0 6
2017 0 5
2016 0 5
2014 0 4
2013 0 2
2012 0 3

Warnings apply to a whole flood area, not necessarily this exact spot. Years before 2006 aren't covered by the EA's historic record. See also the North Cheam flood history.

Flood areas linked to this gauge

Flood warnings and alerts are issued for whole areas. These are the 9 areas linked to this gauge, nearest first.

Show 1 more

Frequently asked questions

Is the Pyl Brook at North Cheam flooding today?

The current level is 1.05m, which is within the typical range of 0.73 to 2.39m. Flooding is unlikely at this level.

Is the river level rising or falling at North Cheam?

Based on the most recent readings, the level is currently steady. The chart above shows the last 12 hours of measurements by default (up to 7 days), updated roughly every 15 minutes.

What is a normal level for the Pyl Brook at North Cheam?

The typical range at this station is 0.73m to 2.39m, based on Environment Agency historical data. Levels above 2.39m are higher than usually seen and may indicate a flood risk.

How often is this river level data updated?

Readings are supplied by the Environment Agency gauge. FloodRadar checks for updates roughly every 15 minutes; the timestamp above shows how recent the latest available reading is.

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📮 Flood risk by postcode near this gauge

Postcodes within 5 km with properties in the Environment Agency’s rivers-and-sea flood-risk bands:

Check any UK postcode’s flood risk →

🏠 Buying or renting around here? Get the Property Flood-Risk Report for any English postcode — official risk band, recorded floods, warning history, river behaviour and nearby storm overflows. £19 one-off. Learn more →