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▲▼ Water Level just past its peak
Rose 0.11 m since 06:00 — peaked 1.00 at 10:15, now 0.99 and holding
0.99

Harold Park

Ingrebourne
Beam and Ingrebourne catchment • Harold Wood • Greater London • ID: 5546TH • Level
(21m ago) • 3 readings/hr • 193 views

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Current Level
0.993 mASD
▲▼ Crested · peaked 1.00
24h Max
1.002 mASD
24h Min
0.890 mASD
Typical Range
-0.24 - 2.20
mASD
Highest Recorded
3.13 mASD
EA official record
A 5.71 reading (18 Jul 2025) sits in our unverified raw history and is not treated as the record
Current level is 32% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Rising · +10 cm over 7h
10 Oct 13:15 ▼ -0.5 cm 0.993 mASD
10 Oct 13:00 ▲ +0.1 cm 0.998 mASD
10 Oct 12:45 ▲ +0.1 cm 0.997 mASD
10 Oct 12:15 ▼ -0.1 cm 0.996 mASD
10 Oct 12:00 ▼ -0.3 cm 0.997 mASD
10 Oct 11:45 ▼ -0.2 cm 1.000 mASD
10 Oct 11:15 ▲ +0.5 cm 1.002 mASD
10 Oct 11:00 ▲ +0.8 cm 0.997 mASD
10 Oct 10:45 ▲ +1 cm 0.989 mASD
10 Oct 10:15 ▲ +2 cm 0.978 mASD
10 Oct 09:45 ▲ +5 cm 0.958 mASD
10 Oct 09:15 ▲ +0.3 cm 0.911 mASD
10 Oct 09:00 ▲ +0.4 cm 0.908 mASD
10 Oct 08:45 ▼ -0.1 cm 0.904 mASD
10 Oct 08:30 ▲ +0.6 cm 0.905 mASD
10 Oct 08:00 ▲ +0.4 cm 0.899 mASD
10 Oct 07:45 ▼ -0.1 cm 0.895 mASD
10 Oct 07:30 ▲ +0.6 cm 0.896 mASD
10 Oct 07:00 ▼ -0.3 cm 0.890 mASD
10 Oct 06:45 0.893 mASD

Station Details

  • Monitoring Station: Harold Park
  • Watercourse: River Ingrebourne
  • Nearest Town: Harold Wood
  • County: Greater London
  • Nearest reservoir: Hanningfield (18.7 km) · 54.9% full (as of 28 Dec 2025)
  • Coordinates: 51°35'60"N 0°14'59"E (51.599864, 0.249585)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 1 Jan 2001
  • Status: Active
  • Station Type: River level station
Technical details: references, datum, range, flow archive
  • Station Reference: 5546TH
  • RLOI id: 7384 (the EA's check-for-flooding station id)
  • EA Gauge ID: 5546TH-level-stage-i-15_min-mASD
  • Parameter: Level
  • Unit: mASD
  • Typical rise rate: 7 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No
  • Catchment Area: Beam and Ingrebourne
  • Typical Range: -0.235 – 2.200 mASD
  • EA Cross-check: 1.00 mASD (EA at 10 Oct 12:45)

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 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.

1 storm overflow is traced upstream of this gauge, the nearest 390 m away along the river. 0 report discharging now, 1 reports not discharging.

💧
Thames Water · into River Ingrebourne · 390 m upstream along the river
17 spills · 192 hours in 2025
Not discharging now · last

Nearby, connection not known

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

💧
Anglian Water · into Mardyke Trib Of Thames Estuary · 3.1 km away in a straight line · discharges to the sea, an estuary or tidal water
3 spills · 8 hours in 2025
Not discharging now · last
💧
Anglian Water · into Mardyke W Trib Trib Thames Est · 4.1 km away in a straight line · several watercourses close by, nothing to choose between them
0 spills · 0 hours in 2025
Not discharging now · last

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 2.20 m on about 1 day. This year so far: 0 days.

2026 0 days so far
2025 1 day
2024 3 days
2023 0 days
2022 1 day
2021 3 days
2020 2 days
2019 1 day
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 2007 for the 8 flood areas linked to this gauge (nearest 1.9 km away).

7flood warnings 157flood alerts

Most recent flood warning: 14 Jan 2021 — River Ingrebourne at Hornchurch

Year by year
YearWarningsAlerts
2026 0 9
2025 0 5
2024 0 17
2023 0 13
2022 0 5
2021 1 22
2020 0 18
2019 0 14
2018 0 4
2017 0 9
2016 5 5
2015 0 3
2014 0 10
2013 0 3
2012 1 13
2011 0 1
2010 0 3
2009 0 2
2007 0 1

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 Harold Wood flood history.

Flood areas linked to this gauge

Flood warnings and alerts are issued for whole areas. These are the 8 areas linked to this gauge, nearest first.

Frequently asked questions

Is the River Ingrebourne at Harold Park flooding today?

The current level is 0.99m, which is within the typical range of -0.24 to 2.20m. Flooding is unlikely at this level.

Is the river level rising or falling at Harold Park?

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 Ingrebourne at Harold Park?

The typical range at this station is -0.24m to 2.20m, based on Environment Agency historical data. Levels above 2.20m 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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📮 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 →