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0.63

Haw Bridge

Severn 🌊 Tidal
Severn Vale catchment • Apperley • Gloucestershire • ID: 2057 • Level
This gauge is tidally influenced — levels rise and fall with each tide, so rapid changes here are normal and don't necessarily indicate flooding.
(22m ago) • 4 readings/hr • 168 views

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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
0.626 mASD
▼ Falling (-2cm/hr)
24h Max
1.001 mASD
24h Min
0.546 mASD
Typical Range
0.53 - 4.50
mASD
Highest Recorded
6.23 mASD
EA official record
6.23 in our data (since Sep 1975)
Current level is 10% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Flood predictions aren't generated for tidal gauges — their levels are driven by the tide, not by catchment rainfall, so the forecast models would have no skill here.

Recent Readings

Falling · -36 cm over 5h
10 Oct 17:15 ▼ -0.8 cm 0.626 mASD
10 Oct 17:00 ▬ steady 0.634 mASD
10 Oct 16:45 ▼ -2 cm 0.634 mASD
10 Oct 16:30 ▼ -0.8 cm 0.652 mASD
10 Oct 16:15 ▼ -0.8 cm 0.660 mASD
10 Oct 16:00 ▼ -1 cm 0.668 mASD
10 Oct 15:45 ▼ -1 cm 0.678 mASD
10 Oct 15:30 ▼ -1 cm 0.690 mASD
10 Oct 15:15 ▼ -0.8 cm 0.704 mASD
10 Oct 15:00 ▼ -2 cm 0.712 mASD
10 Oct 14:45 ▼ -2 cm 0.728 mASD
10 Oct 14:30 ▼ -1 cm 0.747 mASD
10 Oct 14:15 ▼ -1 cm 0.758 mASD
10 Oct 14:00 ▼ -2 cm 0.772 mASD
10 Oct 13:45 ▼ -3 cm 0.787 mASD
10 Oct 13:30 ▼ -4 cm 0.812 mASD
10 Oct 13:00 ▼ -7 cm 0.851 mASD
10 Oct 12:30 ▼ -4 cm 0.923 mASD
10 Oct 12:15 ▼ -2 cm 0.963 mASD
10 Oct 12:00 0.982 mASD

Station Details

  • Monitoring Station: Haw Bridge
  • Watercourse: River Severn
  • Nearest Town: Apperley
  • County: Gloucestershire
  • Coordinates: 51°56'56"N 2°13'37"W (51.948918, -2.227065)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 1 Jul 1971
  • Status: Active
  • Station Type: River level station
Technical details: references, datum, range, flow archive
  • Station Reference: 2057
  • RLOI id: 2031 (the EA's check-for-flooding station id)
  • EA Gauge ID: 2057-level-stage-i-15_min-mASD
  • Parameter: Level
  • Unit: mASD
  • Typical rise rate: 50 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: 🌊 Yes — levels follow the tide
  • Lock / structure: No
  • Catchment Area: Severn Vale
  • Typical Range: 0.533 – 4.500 mASD
  • Drainage Area: 9,895 km² upstream of this gauge
  • Flow Data: Daily mean flow (m³/s) to 8 Oct (2 days behind — the EA publishes each day's mean a day or two after it ends; unchecked, provisional) via EA Hydrology
  • EA Cross-check: 0.63 mASD (EA at 10 Oct 16:45)
  • Flow Archive: National River Flow Archive ↗

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

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

💧 Storm overflows upstream of this gauge

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.

389 storm overflows are traced upstream of this gauge, the nearest 5.9 km away along the river. 0 report discharging now, 352 report not discharging, and for 37 the monitor is offline or has not reported, so their status is not known.

💧
Severn Trent Water · into The Mill Avon · 5.9 km upstream along the river
36 spills · 669 hours in 2025
Not discharging now · last
💧
Severn Trent Water · into Mill Avon · 6.7 km upstream along the river
61 spills · 551 hours in 2025
Not discharging now · last
💧
Severn Trent Water · into Mill Avon · 7.5 km upstream along the river
2 spills · 0 hours in 2025
Not discharging now · last
💧
Severn Trent Water · into Mill Avon · 7.8 km upstream along the river
0 spills · 0 hours in 2025
Not discharging now · last
💧
Severn Trent Water · into Tributary Of River Avon · 12.0 km upstream along the river
49 spills · 533 hours in 2025
Not discharging now · last
💧
Severn Trent Water · into Kemerton Brook · 15.5 km upstream along the river
44 spills · 534 hours in 2025
Not discharging now · last
Placed on the river by its position alone.
💧
Severn Trent Water · into Tirle Brook · 15.6 km upstream along the river
53 spills · 342 hours in 2025
Not discharging now · last
💧
Severn Trent Water · into Hyde Brook · 16.3 km upstream along the river
19 spills · 230 hours in 2025
Not discharging now · last

381 more further upstream, up to 254.7 km away along the river.

Nearby, connection not known

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

💧
Severn Trent Water · into Colliers Brook · 5.0 km away in a straight line · no mapped watercourse close enough to be sure
21 spills · 267 hours in 2025
Not discharging now · last

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 →

Contains OS data © Crown copyright and database rights 2026.

Rainfall & Weather

Loading rainfall and weather data...

How often this river runs high

In a typical year this gauge reaches its typical high of 4.50 m on about 26 days. This year so far: 32 days.

2026 32 days, 9 of them high · 9 high so far
2025 22 days, 1 of them high · 1 high
2024 58 days, 15 of them high · 15 high
2023 37 days, 4 of them high · 4 high
2022 11 days, 1 of them high · 1 high
2021 21 days, 9 of them high · 9 high
2020 40 days, 22 of them high · 22 high
2019 34 days, 10 of them high · 10 high
2018 8 days
2017 0 days

Counted from each day's highest reading. Days with missing or implausible readings are left out. The darker part is days above 5.09 m, the level this gauge tops only a few days a year.

Flood history near this gauge

Official Environment Agency warnings issued since 2008 for the 14 flood areas linked to this gauge (nearest 1.0 km away).

2severe warnings 291flood warnings 134flood alerts

Most recent flood warning: 3 Mar 2026 — River Severn at Severn Ham, Tewkesbury

Year by year
YearSevereWarningsAlerts
2026 0 15 13
2025 0 17 6
2024 0 58 16
2023 0 31 15
2022 1 13 6
2021 0 14 8
2020 0 31 4
2019 0 28 10
2018 0 8 8
2017 0 0 3
2016 0 12 5
2015 0 5 7
2014 1 25 2
2013 0 12 8
2012 0 22 8
2011 0 0 3
2010 0 0 1
2009 0 0 7
2008 0 0 4

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 Apperley flood history.

Flood areas linked to this gauge

Flood warnings and alerts are issued for whole areas. These are the 14 areas linked to this gauge, nearest first.

Show 6 more

Catchment Character

🌊 Mixed response A balance of quick runoff and slower groundwater baseflow.

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
0.51
mixed response
Avg Annual Rainfall
849 mm/yr
1991–2020 · +4% since 1941–70
Urban Extent
3.5%
partly urbanised
Median Annual Flood
490 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
1,340 m³/s
23 Jul 2007 · daily mean, not the instantaneous peak
Flow-Duration Curve
mean 11338568.5021.135% (high)% of days exceeded95% (low)
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.
Land Cover (2023)
Woodland 9%Grassland 52%Arable 30%Heath/scrub 1%Urban 7%Other 1%

Flow affected by: surface-water abstraction, reservoir influence, public water supply, groundwater abstraction, effluent returns, industrial / agricultural abstraction.

Photos

Gauging-station photographs from the National River Flow Archive (UKCEH).

Photos © NRFA / UKCEH & the measuring authority — shown at web resolution. Full gallery on the NRFA ↗

About this gauge

Velocity area station downstream of Warwickshire Avon inflow that is tidally affected and subject to heavily regulated/modified flows owing to PWS exports and effluent returns - provides the lowest gauge on the Severn.

More detail

The catchment

Very large, diverse catchment, lowest on the Severn. Paleozoic slates in Welsh headwaters, Permo-Triassic sediments in middle reaches and Jurassic and Liassic clays in the Avon basin.

The station

Haw Bridge is a velocity-area measurement station located on the B4213. It is downstream of the Warwickshire Avon inflow and is the lowest flow gauge on the River Severn. The site is impacted by the tide, however flows values will not account for this. Tidal influences are taken into account by the Deerhurst ADCP gauge approximately 2.21miles upstream (54110).

How it measures flow

Gauging possible from bridge up until bankfull. Difficult to access at times of very high flows if access to the bridge and road are restricted. Previously at very high flows gauging have been conducted along the B4213 and within the channel itself. There remains a high percentage of error with high flow gaugings due to the complexity of the site. Hysteresis observed during high flow events. The site is tidal influenced, however it is not possible to measure this, at this gauge. Deerhurst approximately 2.21 miles further upstream is able to account for the resultant change in velocity and flow direction as it is an ADCP site. The site itself can be prone to weed growth and bed movement, as well as siltation problems with the stilling tube on site. Multiple ratings have been applied across the period of record. Ratings applied are a compromise between allowing for bed movement and making the best use of out of bank gaugings. Most recent rating fits well to corresponding out of bank gaugings.

Flow regime

Heavily regulated/modified flows; compensation flows from Llyn Clywedog and the Shropshire Groundwater Scheme, with PWS exports (to Liverpool, West Midlands and Gloucestershire) and effluent returns (chiefly to Avon, Stour (Worcs.) and Severn at Worcester). The flows are affected by tides.

The flow record

July 2007 peak exceeded limits of rating curve by a large margin, all flows for event estimated using National Flow Forecasting System hydrodynamic model. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).

Descriptions from the National River Flow Archive (UKCEH). NRFA station record ↗

Gauge Details

How this gauging station is built and how long it has measured (NRFA / UKCEH).

Gauge type
Velocity–area
Operating since
1971
Station datum
6.0 mAOD
Flow record
1971–2024 · 53 yrs · 99% complete
Peak-flow record
since 1972
Hydrometric area
54
Measured by
Environment Agency

Frequently asked questions

Is the River Severn at Haw Bridge flooding today?

The current level is 0.63m, which is within the typical range of 0.53 to 4.50m. Flooding is unlikely at this level.

Is the river level rising or falling at Haw Bridge?

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 6.6mm 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 Severn at Haw Bridge?

The typical range at this station is 0.53m to 4.50m, based on Environment Agency historical data. Levels above 4.50m 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.

Embed this gauge on your website

Free live river-level widget — ideal for parish councils, angling clubs and local sites. Updates automatically.

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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 →