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0.18

Tilford

Wey
Wey catchment • Tilford • Surrey • ID: 3040TH • Level
(1h ago) • 4 readings/hr • 252 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
0.184 mASD
▬ Steady
24h Max
0.189 mASD
24h Min
0.160 mASD
Typical Range
0.14 - 1.40
mASD
Highest Recorded
2.09 mASD
EA official record
A 2.34 reading (15 Apr 2025) sits in our unverified raw history and is not treated as the record
Current level is 9% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Rising · +0.2 cm over 6h
08 Oct 01:30 ▼ -0.1 cm 0.184 mASD
08 Oct 01:15 ▼ -0.1 cm 0.185 mASD
08 Oct 01:00 ▬ steady 0.186 mASD
08 Oct 00:45 ▼ -0.1 cm 0.186 mASD
08 Oct 00:30 ▬ steady 0.187 mASD
08 Oct 00:15 ▼ -0.1 cm 0.187 mASD
08 Oct 00:00 ▲ +0.1 cm 0.188 mASD
07 Oct 23:45 ▼ -0.1 cm 0.187 mASD
07 Oct 23:30 ▬ steady 0.188 mASD
07 Oct 22:30 ▬ steady 0.188 mASD
07 Oct 22:15 ▼ -0.1 cm 0.188 mASD
07 Oct 22:00 ▬ steady 0.189 mASD
07 Oct 21:45 ▲ +0.1 cm 0.189 mASD
07 Oct 21:30 ▲ +0.1 cm 0.188 mASD
07 Oct 21:15 ▬ steady 0.187 mASD
07 Oct 21:00 ▬ steady 0.187 mASD
07 Oct 20:45 ▲ +0.3 cm 0.187 mASD
07 Oct 20:30 ▲ +0.1 cm 0.184 mASD
07 Oct 20:15 ▲ +0.1 cm 0.183 mASD
07 Oct 20:00 0.182 mASD

Station Details

  • Monitoring Station: Tilford
  • Watercourse: River Wey
  • Nearest Town: Tilford
  • County: Surrey
  • Coordinates: 51°10'55"N 0°45'1"W (51.181979, -0.750222)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 1 Jan 1986
  • Status: Active
  • Station Type: River level station
Technical details: references, datum, range, flow archive
  • Station Reference: 3040TH
  • RLOI id: 7231 (the EA's check-for-flooding station id)
  • EA Gauge ID: 3040TH-level-stage-i-15_min-mASD
  • Parameter: Level
  • Unit: mASD
  • Typical rise rate: 1 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No
  • Catchment Area: Wey
  • Typical Range: 0.139 – 1.400 mASD
  • Drainage Area: 396 km² upstream of this gauge
  • Flow Data: Daily mean flow (m³/s) to 6 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: 0.18 mASD (EA at 8 Oct 01:45)
  • 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.

9 storm overflows are traced upstream of this gauge, the nearest 12.1 km away along the river. 0 report discharging now, 8 report not discharging, and for 1 the monitor is offline or has not reported, so their status is not known.

💧
Churt SPS🏊 Bathing water
Thames Water · into Whitmoor Vale Stream · 12.1 km upstream along the river
4 spills · 8 hours in 2025
Not discharging now · last
Placed on the river by its position alone.
💧
Thames Water · into Wey (Southern Branch) · 16.6 km upstream along the river
9 spills · 98 hours in 2025
Not discharging now · last
💧
Thames Water · into River Wey · 20.3 km upstream along the river
0 spills · 0 hours in 2025
Monitor offline: it cannot say whether it is discharging
💧
Thames Water · into Oakhanger Stream · 23.9 km upstream along the river
59 spills · 899 hours in 2025
Not discharging now · last
💧
Thames Water · into Oakhanger Stream · 24.0 km upstream along the river
2 spills · 12 hours in 2025
Not discharging now · last
💧
Thames Water · into River Wey · 25.2 km upstream along the river
6 spills · 77 hours in 2025
Not discharging now · last
💧
Thames Water · into Wey · 26.5 km upstream along the river
0 spills · 0 hours in 2025
Not discharging now · last
💧
Thames Water · into River Wey (South) · 28.8 km upstream along the river
33 spills · 303 hours in 2025
Not discharging now · last

1 more further upstream, up to 28.8 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.

💧
Thames Water · into Farnham Bourne · 3.1 km away in a straight line · no mapped watercourse close enough to be sure
4 spills · 33 hours in 2025
Not discharging now · last
💧
Thames Water · into Farnham Park Tributary · 4.6 km away in a straight line · several watercourses close by, nothing to choose between them
27 spills · 269 hours in 2025
No live feed for this overflow

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 1.40 m on about 5 days. This year so far: 7 days.

2026 7 days so far
2025 6 days
2024 13 days
2023 7 days
2022 3 days
2021 2 days
2020 9 days
2019 4 days
2018 0 days
2017 0 days

Counted from each day's highest reading. Days with missing or implausible readings are left out.

Flood history near this gauge

Official Environment Agency warnings issued since 2012 for the 9 flood areas linked to this gauge (nearest 0.9 km away).

23flood warnings 129flood alerts

Most recent flood warning: 27 Jan 2026 — River Wey at Elstead and Eashing

Year by year
YearWarningsAlerts
2026 2 6
2025 4 6
2024 3 12
2023 1 17
2022 0 13
2021 0 13
2020 4 10
2019 1 8
2018 2 10
2017 0 4
2016 0 9
2015 0 5
2014 4 9
2013 2 3
2012 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 Tilford 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

Catchment Character

🌊 Groundwater-fed Slow 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
0.80
groundwater-fed — slow & steady
Avg Annual Rainfall
929 mm/yr
1991–2020 · +7% since 1941–70
Urban Extent
5.3%
partly urbanised
Median Annual Flood
26.20 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
56.20 m³/s
16 Sep 1968 · daily mean, not the instantaneous peak
Flow-Duration Curve
mean 3.348.052.451.335% (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 23%Grassland 35%Arable 26%Heath/scrub 3%Urban 12%
Urban 7% → 12% since 1990

Flow affected by: groundwater abstraction, effluent returns.

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

One of the main gauging stations in the Upper Wey Catchment that measures flow from the South and North Wey tributaries.

More detail

The catchment

A predominantly pervious catchment (Chalk and Upper Greensand). Mainly rural with substantial mixed woodland in the headwaters while arable agriculture predominates in the western part of the catchment. Topographical catchment exceeds the gw catchment.

The station

Crump weir (crest: 12m wide) replaced an informal broad-crested structure in 1972 that was incapable of precise flow measurement.

How it measures flow

A tail recorder was installed in May 2013. The weir was originally constructed with a pressure tapping, but this is almost permanently blocked by silt. The weir is bypassed during peak flows. One peak flow rating applied across period of record incorporating the effects of drowning. Gauged rating replaced Crump calibration in March 1997.

Flow regime

Runoff influenced by groundwater abstraction/recharge. Flows increased by effluent returns. Small net export of water. Substantial baseflow but very responsive to storm events.

The flow record

Early low flows likely to be over-estimates e.g. 1958 & 1969); differing hydrometric performance reflected in flow records. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).

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
Crump weir
Operating since
1954
Station datum
47.8 mAOD
Flow record
1954–2024 · 70 yrs · 100% complete
Peak-flow record
since 1954
Hydrometric area
39
Measured by
Environment Agency

Frequently asked questions

Is the River Wey at Tilford flooding today?

The current level is 0.18m, which is within the typical range of 0.14 to 1.40m. Flooding is unlikely at this level.

Is the river level rising or falling at Tilford?

Based on the most recent readings, the level is currently steady. 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 Wey at Tilford?

The typical range at this station is 0.14m to 1.40m, based on Environment Agency historical data. Levels above 1.40m 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.

Preview

📮 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 →