Beam and Ingrebourne catchment
• Upminster • England • ID: 5550TH • Level
(43m ago) • 2 readings/hr • 127 views
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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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EA/SEPA data and are best-efforts. Terms
Current Level
0.106 mASD
▬ Steady
24h Max
0.110 mASD
24h Min
0.076 mASD
Typical Range
0.10 - 1.15
mASD
Highest Recorded
1.75 mASD
23 Jun 2016
Since Oct 1981
Current level is 6% of this
🚽Sewage overflows nearby
Recent Water Levels
🌍 floodradar.co.uk
1 day
Flood predictions aren't generated for
lock / structure gauges —
their levels are driven by gate operation,
not by catchment rainfall, so the forecast models would have no skill here.
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
Rising · +3 cm over 6h
23 Aug 22:45▼ -0.2 cm0.106 mASD
23 Aug 22:30▼ -0.2 cm0.108 mASD
23 Aug 21:15▬ steady0.110 mASD
23 Aug 21:00▬ steady0.110 mASD
23 Aug 20:45▬ steady0.110 mASD
23 Aug 20:30▲ +0.2 cm0.110 mASD
23 Aug 20:15▲ +0.4 cm0.108 mASD
23 Aug 20:00▲ +0.6 cm0.104 mASD
23 Aug 19:45▲ +1 cm0.098 mASD
23 Aug 19:30▲ +0.8 cm0.088 mASD
23 Aug 19:15▲ +0.2 cm0.080 mASD
23 Aug 19:00▲ +0.2 cm0.078 mASD
23 Aug 18:45▬ steady0.076 mASD
23 Aug 18:30▬ steady0.076 mASD
23 Aug 18:15▬ steady0.076 mASD
23 Aug 18:00▬ steady0.076 mASD
23 Aug 17:45▼ -0.2 cm0.076 mASD
23 Aug 17:30▬ steady0.078 mASD
23 Aug 17:15▬ steady0.078 mASD
23 Aug 17:000.078 mASD
Rainfall & Weather
Loading rainfall and weather data...
Flood history near this gauge
Official Environment Agency warnings issued since 2007 for the 14 flood
areas linked to this gauge (nearest 1.1 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 Upminster 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
🌊 Urban & flashyHeavily built-up — rain runs off hard surfaces fast, so levels can spike within hours of heavy rain.
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
0.28
flashy — rain runs off fast
Avg Annual Rainfall
615 mm/yr
1991–2020 · +1% since 1941–70
Urban Extent
17%
heavily urbanised
Median Annual Flood
7.40 m³/s
QMED — typical yearly peak flow
Highest Recorded Flow
18.20 m³/s
21 Nov 1974
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.
Essex profile modified Flat V Crump weir situated in a rural headwater with artificial influences from urban land uses.
More detail
The catchment
Largely impermeable catchment (London Clay/glacial deposits). Rural headwaters but substantial urban development around lower reaches.
The station
Essex profile (modified Flat V Crump) weir in 9.5m wide section, operated as a rated section. Used for both Water Resource and Flood Incident management. Only gauging station on the Ingrebourne river, approximately 7km upstream of confluence with the Thames.
How it measures flow
All but exceptional floods contained. Operated as a rated section but rating based on modelled equation for Essex weirs. Model-based calibration assumes modularity; however, non-modular flow can occur as low as 0.4mASD depending on downstream conditions. Rating estimates of modular flow thought to be reasonable but tendancy to overestimate below Q70. No gaugings beyond QMED. One peak flow rating applied across period of record.
Flow regime
Runoff increased by effluent returns but reduced by industrial/agricultural abstraction. Minor net augmentation of runoff through transfer from River Beam. Reservoir(s) in the catchment affect runoff.
The flow record
Naturalised flow available for period 1970-75. Bypassing thought to have occurred during the three highest peaks in AMAX series. Full period of record peak flow data reviewed and released in August 2025 (WINFAP Files v14).
How this gauging station is built and how long it has measured (NRFA / UKCEH).
Gauge type
Gauging structure
Operating since
1970
Station datum
11.6 mAOD
Flow record
1970–2024 · 54 yrs · 100% complete
Peak-flow record
since 1970
Hydrometric area
37
Measured by
Environment Agency
Nearby Groundwater
Soil Moisture
🚽 Storm overflows on this river
Frequently asked questions
Is the River Ingrebourne at Gaynes Park flooding today?
The current level is 0.11m, which is within the typical range of 0.10 to 1.15m. Flooding is unlikely at this level.
Is the river level rising or falling at Gaynes Park?
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.
What is a normal level for the River Ingrebourne at Gaynes Park?
The typical range at this station is 0.10m to 1.15m, based on Environment Agency historical data. Levels above 1.15m 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:
