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Water Level Falling
Down from 0.51 at 17:30, now 0.41
0.41

Kings College

Pyl Brook
London catchment • New Malden • Greater London • ID: 4063TH • Level
(34m ago) • 4 readings/hr • 141 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
0.405 mASD
▼ Falling (-1cm/hr)
24h Max
0.536 mASD
24h Min
0.349 mASD
Typical Range
0.09 - 1.60
mASD
Highest Recorded
2.52 mASD
EA official record
1.85 in our data (since Feb 2025)
Current level is 16% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Falling · -0.3 cm over 5h
09 Oct 22:30 ▼ -0.3 cm 0.405 mASD
09 Oct 22:15 ▼ -0.3 cm 0.408 mASD
09 Oct 22:00 ▼ -0.6 cm 0.411 mASD
09 Oct 21:45 ▼ -0.4 cm 0.417 mASD
09 Oct 21:30 ▼ -0.7 cm 0.421 mASD
09 Oct 21:15 ▼ -0.7 cm 0.428 mASD
09 Oct 21:00 ▼ -0.6 cm 0.435 mASD
09 Oct 20:45 ▼ -0.2 cm 0.441 mASD
09 Oct 20:30 ▼ -0.3 cm 0.443 mASD
09 Oct 20:15 ▼ -0.7 cm 0.446 mASD
09 Oct 20:00 ▼ -0.8 cm 0.453 mASD
09 Oct 19:45 ▼ -0.9 cm 0.461 mASD
09 Oct 19:30 ▼ -1 cm 0.470 mASD
09 Oct 19:15 ▼ -1 cm 0.481 mASD
09 Oct 19:00 ▼ -1 cm 0.494 mASD
09 Oct 18:45 ▼ -0.3 cm 0.506 mASD
09 Oct 18:30 ▲ +5 cm 0.509 mASD
09 Oct 18:00 ▲ +2 cm 0.462 mASD
09 Oct 17:45 ▲ +3 cm 0.439 mASD
09 Oct 17:30 0.408 mASD

Station Details

  • Monitoring Station: Kings College
  • Watercourse: Pyl Brook
  • Nearest Town: New Malden
  • County: Greater London
  • Coordinates: 51°23'51"N 0°13'51"W (51.397462, -0.230955)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 1 Jan 1997
  • Status: Active
  • Station Type: River level station
Technical details: references, datum, range, flow archive
  • Station Reference: 4063TH
  • RLOI id: 7296 (the EA's check-for-flooding station id)
  • EA Gauge ID: 4063TH-thames-level-stage-i-15_min-mASD
  • Parameter: Level
  • Unit: mASD
  • Typical rise rate: 4 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No
  • Catchment Area: London
  • Datum: 14.000m AOD
  • Typical Range: 0.094 – 1.600 mASD
  • EA Cross-check: 0.41 mASD (EA at 9 Oct 22:15)

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 upstream

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 Old Pyl Ditch · 800 m 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 N/A · 4.2 km away in a straight line · its watercourse is not on the river map
0 spills · 0 hours in 2025
Not discharging now · last
💧
Thames Water · into N/A · 4.2 km away in a straight line · its watercourse is not on the river map
0 spills · 0 hours in 2025
Not discharging now · last
💧
Thames Water · into N/A · 4.7 km away in a straight line · its watercourse is not on the river map
3 spills · 4 hours in 2025
Not discharging now · last
💧
Thames Water · into River Graveney · 4.9 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 · 4.9 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 · 4.9 km away in a straight line · its watercourse is not on the river map
18 spills · 21 hours in 2025
Not discharging now · last
💧
Thames Water · into Beddington Effluent Carrier/Wa · 5.3 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

13 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

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Flood history near this gauge

Official Environment Agency warnings issued since 2012 for the 9 flood areas linked to this gauge (nearest 0.4 km away).

3flood warnings 54flood 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 2
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 New Malden 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 Kings College flooding today?

The current level is 0.41m, which is within the typical range of 0.09 to 1.60m. Flooding is unlikely at this level.

Is the river level rising or falling at Kings College?

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

Why is the level slowly falling?

When little or no rain has fallen for a while, a river level gradually drops as the water stored in the ground and soil drains away with nothing to replace it. This is called baseflow recession and is normal in dry spells. Only about 9.3mm of rain has fallen nearby in the last 7 days, so the flow is being sustained mainly by groundwater. A gentle decline like this is expected and is not a sign of a problem — downstream gauges often recede a little faster than headwaters further upstream, and levels recover once rain returns.

What is a normal level for the Pyl Brook at Kings College?

The typical range at this station is 0.09m to 1.60m, based on Environment Agency historical data. Levels above 1.60m 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 →