Thames from Hurley to Teddington catchment
• Staines • Surrey • ID: 2900TH • Level
(1h ago) • 4 readings/hr • 242 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 mASD/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
2.624 mASD
▬ Steady
24h Max
2.664 mASD
24h Min
2.624 mASD
Typical Range
2.70 - 4.00
mASD
Highest Recorded
5.85 mASD
12 Mar 2022
Since Oct 1990
Current level is 45% of this
Current Flow
Loading...
🚽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. Shown with its calibrated 10–90% confidence band. 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
Falling · -0.5 cm over 5h
23 Aug 21:30▬ steady2.624 mASD
23 Aug 21:15▬ steady2.624 mASD
23 Aug 21:00▼ -0.3 cm2.624 mASD
23 Aug 20:45▲ +0.2 cm2.627 mASD
23 Aug 20:30▬ steady2.625 mASD
23 Aug 20:15▼ -0.2 cm2.624 mASD
23 Aug 20:00▬ steady2.626 mASD
23 Aug 19:45▬ steady2.627 mASD
23 Aug 19:30▬ steady2.626 mASD
23 Aug 19:15▼ -0.2 cm2.626 mASD
23 Aug 19:00▼ -0.5 cm2.628 mASD
23 Aug 18:45▲ +0.2 cm2.633 mASD
23 Aug 18:30▬ steady2.631 mASD
23 Aug 18:15▬ steady2.630 mASD
23 Aug 18:00▲ +0.4 cm2.630 mASD
23 Aug 17:45▼ -0.3 cm2.626 mASD
23 Aug 17:30▲ +0.2 cm2.629 mASD
23 Aug 17:15▼ -0.2 cm2.627 mASD
23 Aug 17:00▬ steady2.629 mASD
23 Aug 16:302.629 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.
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 Recorded Flow
404 m³/s
11 Feb 2014
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 2.62m, 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 steady. The chart above shows the last 7 days of measurements, 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 1.3mm 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 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:
