Thames from Hurley to Teddington catchment
• Staines • Surrey • ID: 2900TH • Level
(23m ago) • 4 readings/hr • 291 views
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⤴Unusual rise — FloodRadar+Top 1% rise rate for this gauge.
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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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Current Level
2.627 mASD
▲ Rising
24h Max
2.686 mASD
24h Min
2.610 mASD
Typical Range
2.70 - 4.00
mASD
Highest Recorded
4.96 mASD
EA official record
A 5.85 reading (12 Mar 2022) sits in our unverified raw history and is not treated as the record
Current level is 53% of this
Current Flow
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🚽Sewage overflows nearby
Recent Water Levels
🌍 floodradar.co.uk
1 day
Prediction V2
Prediction Eris
Nimbus beta
Experimental model fusing soil moisture, river flow, groundwater and catchment
character. The shaded band is its 10–90% range, widened so that about 80% of recent outcomes fall inside it.
Under evaluation — not yet promoted, so treat as a second opinion.
River Flow
90 days
Daily mean discharge (m³/s) with the daily min–max band, from the EA Hydrology API. Flow is the volume of water passing the gauge — often a more direct flood signal than level.
Long Term
🌍 floodradar.co.uk
—
Consecutive rainy days0 → 10+
Days Above Normal
This year vs 5-year monthly range
Recent Readings
Rising · +2 cm over 5h
10 Sep 05:30▬ steady2.627 mASD
10 Sep 05:15▬ steady2.626 mASD
10 Sep 05:00▼ -0.2 cm2.625 mASD
10 Sep 04:45▲ +0.4 cm2.627 mASD
10 Sep 04:30▲ +0.1 cm2.623 mASD
10 Sep 04:15▲ +0.2 cm2.622 mASD
10 Sep 04:00▬ steady2.620 mASD
10 Sep 03:45▬ steady2.620 mASD
10 Sep 03:30▲ +0.4 cm2.621 mASD
10 Sep 03:15▬ steady2.617 mASD
10 Sep 03:00▲ +0.2 cm2.618 mASD
10 Sep 02:45▬ steady2.616 mASD
10 Sep 02:30▼ -0.2 cm2.615 mASD
10 Sep 02:15▲ +0.5 cm2.617 mASD
10 Sep 01:30▬ steady2.612 mASD
10 Sep 01:15▬ steady2.613 mASD
10 Sep 01:00▲ +0.2 cm2.612 mASD
10 Sep 00:45▼ -0.2 cm2.610 mASD
10 Sep 00:30▲ +0.2 cm2.612 mASD
10 Sep 00:152.610 mASD
Rainfall & Weather
Loading rainfall and weather data...
Flood history near this gauge
Official Environment Agency warnings issued since 2012 for the 25 flood
areas linked to this gauge (nearest 0.7 km away).
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 Staines flood history.
Flow Data: Daily mean flow (m³/s) to 8 Sep (2 days behind — the EA publishes each day's mean a day or two after it ends; unchecked, provisional)via EA Hydrology
Geographic coordinates may reflect the access point for the gauge, and not the precise location in the watercourse that it is taking readings from.
Catchment Character
🌊 Groundwater-fedSlow and steady — fed largely by groundwater, so levels change gradually, not in sudden spikes.
Your catchment is all the land that drains rainfall into the river above this gauge. Its character — how
steep, wet, wooded, urban or chalky that land is — decides how fast rain here turns into a rising river. A steep, bare or clay
catchment is “flashy” (rises and falls quickly, floods easily); a flat, chalk or well-wooded one is
slow and steady. The tiles below put numbers to that; the flow-duration curve reads left-to-right
from the river’s typical high flows (Q5) down to its low flows (Q95) — a steep curve means a flashy river.
The physical character of the land that drains to this gauge, and how it shapes its flood response — from the National River Flow Archive (UKCEH).
Baseflow Index
0.65
groundwater-fed — slow & steady
Avg Annual Rainfall
743 mm/yr
1991–2020 · +4% since 1941–70
Urban Extent
5.6%
partly urbanised
Highest Daily Mean Flow
404 m³/s
11 Feb 2014 · daily mean, not the instantaneous peak
Flow-Duration Curve
Daily flow (m³/s) exceeded each % of the time — a steep curve is flashy, a flat one is steady. Q5 high · Q50 median · Q95 low.
Flow affected by: public water supply, groundwater abstraction, industrial / agricultural abstraction.
About this gauge
Ultrasonic gauging station located on the main channel of the River Thames, within the lower reaches of the catchment.
More detail
The catchment
Scarp and vale topography. Diverse geology. Predominantly rural headwaters contrast with substantial urban and suburban development in the lower reaches.
The station
US multi-path (6) in cross configuration. Transducers are located in piles set in the channel.
How it measures flow
Excellent agreement between multi-meter check gaugings and US calibration. Levels affected by gate and lock movements. In hot weather temperature gradients can deflect beams.
Flow regime
Major PWS abstractions u/s very evident at low flows.
The flow record
Gap in data August 2018 - June 2019 due to site works.
How this gauging station is built and how long it has measured (NRFA / UKCEH).
Gauge type
Ultrasonic
Operating since
1990
Station datum
10.0 mAOD
Flow record
1990–2024 · 34 yrs · 94% complete
Hydrometric area
39
Measured by
Environment Agency
Nearby Groundwater
Soil Moisture
Possible storm-overflow correlation
💧 Storm overflows on this river
Frequently asked questions
Is the River Thames at Staines flooding today?
The current level is 2.63m, which is below the typical range. Flooding is very unlikely at this level.
Is the river level rising or falling at Staines?
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.
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. 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 River Thames at Staines?
The typical range at this station is 2.70m to 4.00m, based on Environment Agency historical data. Levels above 4.00m are higher than usually seen and may indicate a flood risk.
How often is this river level data updated?
Readings are taken by the Environment Agency gauge roughly every 15 minutes and FloodRadar refreshes its data continuously, so the level shown is normally less than an hour old.
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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:
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