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Height for "Above a height"
Drag the line on the chart, or type a value:mASD
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You'll be notified when this gauge is rising more than 0.10 m/hr — a sign of rapidly increasing water levels.
You'll be notified when a new storm-overflow (sewage) discharge starts within ~3 km of this gauge, based on the water companies' near-real-time feeds.
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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
0.217 mASD
▲ Rising (+1cm/hr)
24h Max
0.243 mASD
24h Min
0.120 mASD
Typical Range
0.08 - 0.30
mASD
Highest Recorded
1.40 mASD
EA official record
0.96 in our data (since Nov 2012)
Current level is 15% of this
ⓘ
Flood alert
Tidal Thames riverside from Putney Bridge to Teddington Weir
High tides overnight may lead to flooding.
Flooding is possible from 02:15 AM to 04:15 AM on Saturday 10th October.
The forecast high tide at Richmond is 4.70 mAOD at 03:15 AM on 10/10/2026.
We believe there is a possibility of flooding for Putney Embankment (SW15), Chiswick Mall and Strand on the Green (W4), Thames Bank at Mortlake (SW14), Ranelagh Drive (TW1), Friars Lane and Water Lane (TW9), Riverside and The Embankment at Twickenham, and the Towpath below Teddington Lock. Flooding of properties is not expected.
Astronomical tide levels are rising. The river flow at Teddington Weir is 4 cubic metres per second and is steady. We anticipate the flows to remain steady for the next few days.
We are closely monitoring the situation .
Avoid low lying roads near rivers, which may be flooded.
This message will be updated by 9:00AM on Saturday 10 October or as the situation changes.
Flood predictions aren't generated for
lock / structure gauges —
their levels are driven by gate operation,
not by catchment rainfall, so the forecast models would have no skill here.
Downstream level
7 days
The level on the DOWNSTREAM side of this lock/weir structure — a separate EA
measure from the main (upstream) reading shown on the Current tab. Threshold bands
are computed from this gauge's own downstream history.
Storm overflows whose water reaches this gauge on the mapped river network, nearest first by distance along the river. The status is each water company's monitor: it says whether an overflow is discharging, not how much or what it contains.
118 storm overflows are traced upstream of this gauge, the nearest 10.6 km away along the river. 0 report discharging now, 115 report not discharging, and for 3 the monitor is offline or has not reported, so their status is not known.
Thames Water · into The Cut · 37.7 km upstream along the river
19 spills · 215 hours in 2025
Not discharging now · last
Placed on the river by its position alone.
110 more further upstream, up to 216.0 km away along the river.
1 other overflow within 6 km is downstream of this gauge or on another branch of the river network, so it is 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 →
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 Laleham flood history.
Flood areas linked to this gauge
Flood warnings and alerts are issued for whole areas. These are the 30 areas linked to this gauge, nearest first.
Is the River Thames at Penton Hook flooding today?
The current level is 0.22m, which is within the typical range of 0.08 to 0.30m. Flooding is unlikely at this level.
Is the river level rising or falling at Penton Hook?
Based on the most recent readings, the level is currently rising. 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 River Thames at Penton Hook?
The typical range at this station is 0.08m to 0.30m, based on Environment Agency historical data. Levels above 0.30m 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:
FloodRadar
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