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Water Level Easing
Easing — down from 17.53 at 19:30, now 17.48
17.48

Bray

Groundwater Level 💧 Groundwater
Thames from Hurley to Teddington catchment • Egham • Windsor and Maidenhead • ID: SU97/78A • Level
(31m ago) • 4 readings/hr • 89 views

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Current Level
17.484 mAOD
▼ Easing
24h Max
17.530 mAOD
24h Min
17.472 mAOD
Typical Range
17.45 - 20.30
mAOD
Highest Recorded
21.87 mAOD
EA official record
19.51 in our data (since Feb 2026)
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Falling · -3 cm over 5h
10 Oct 05:15 ▬ steady 17.484 mAOD
10 Oct 05:00 ▼ -0.2 cm 17.485 mAOD
10 Oct 04:45 ▼ -0.1 cm 17.487 mAOD
10 Oct 04:30 ▼ -0.1 cm 17.488 mAOD
10 Oct 04:15 ▬ steady 17.489 mAOD
10 Oct 04:00 ▼ -0.2 cm 17.490 mAOD
10 Oct 03:45 ▬ steady 17.492 mAOD
10 Oct 03:30 ▼ -0.1 cm 17.493 mAOD
10 Oct 03:15 ▼ -0.2 cm 17.494 mAOD
10 Oct 03:00 ▼ -0.1 cm 17.496 mAOD
10 Oct 02:45 ▼ -0.2 cm 17.497 mAOD
10 Oct 02:30 ▼ -0.1 cm 17.499 mAOD
10 Oct 02:15 ▼ -0.4 cm 17.500 mAOD
10 Oct 01:30 ▼ -0.2 cm 17.504 mAOD
10 Oct 01:15 ▼ -0.1 cm 17.506 mAOD
10 Oct 01:00 ▬ steady 17.507 mAOD
10 Oct 00:45 ▼ -0.1 cm 17.508 mAOD
10 Oct 00:30 ▼ -0.2 cm 17.509 mAOD
10 Oct 00:15 ▼ -0.2 cm 17.511 mAOD
10 Oct 00:00 17.513 mAOD

Station Details

Technical details: references, datum, range, flow archive
  • Station Reference: SU97/78A
  • RLOI id: 9583 (the EA's check-for-flooding station id)
  • EA Gauge ID: SU97_78A-level-groundwater-i-15_min-mAOD
  • Parameter: Level
  • Unit: mAOD
  • 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: Thames from Hurley to Teddington
  • Typical Range: 17.448 – 20.300 mAOD
  • EA Cross-check: 17.48 mAOD (EA at 10 Oct 05:15)

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.

Nearby

Rainfall & Weather

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Flood history near this gauge

Official Environment Agency warnings issued since 2012 for the 6 flood areas linked to this gauge (nearest 3.8 km away).

0flood warnings 53flood alerts

Most recent flood alert: 24 Feb 2025 — Cut

Year by year
YearWarningsAlerts
2025 0 3
2024 0 7
2023 0 3
2021 0 4
2020 0 3
2019 0 4
2018 0 5
2017 0 4
2016 0 6
2015 0 3
2014 0 6
2013 0 3
2012 0 2

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 Egham flood history.

Flood areas linked to this gauge

Flood warnings and alerts are issued for whole areas. These are the 6 areas linked to this gauge, nearest first.

Frequently asked questions

Is the Groundwater Level at Bray flooding today?

The current level is 17.48m, which is within the typical range of 17.45 to 20.30m. Flooding is unlikely at this level.

Is the river level rising or falling at Bray?

Based on the most recent readings, the level is currently falling slightly. 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 Groundwater Level at Bray?

The typical range at this station is 17.45m to 20.30m, based on Environment Agency historical data. Levels above 20.30m 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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Postcodes within 5 km with properties in the Environment Agency’s rivers-and-sea flood-risk bands:

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