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0.08

Brampton Racecourse

Alconbury Brook
Upper and Bedford Ouse catchment • Brampton • Cambridgeshire • ID: E21713 • Level
(26m ago) • 4 readings/hr • 175 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
0.078 mASD
▬ Steady
24h Max
0.078 mASD
24h Min
0.065 mASD
Typical Range
0.09 - 1.51
mASD
Highest Recorded
2.10 mASD
EA official record
A 3.10 reading (10 Apr 1998) sits in our unverified raw history and is not treated as the record
Current level is 4% of this
🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Rising · +0.3 cm over 6h
10 Oct 01:30 ▬ steady 0.078 mASD
10 Oct 01:15 ▬ steady 0.078 mASD
10 Oct 01:00 ▬ steady 0.078 mASD
10 Oct 00:45 ▬ steady 0.078 mASD
10 Oct 00:30 ▲ +0.1 cm 0.078 mASD
10 Oct 00:00 ▬ steady 0.077 mASD
09 Oct 23:45 ▬ steady 0.077 mASD
09 Oct 23:30 ▬ steady 0.077 mASD
09 Oct 22:30 ▬ steady 0.077 mASD
09 Oct 22:15 ▲ +0.1 cm 0.077 mASD
09 Oct 22:00 ▬ steady 0.076 mASD
09 Oct 21:45 ▬ steady 0.076 mASD
09 Oct 21:30 ▬ steady 0.076 mASD
09 Oct 21:15 ▬ steady 0.076 mASD
09 Oct 21:00 ▬ steady 0.076 mASD
09 Oct 20:45 ▬ steady 0.076 mASD
09 Oct 20:30 ▬ steady 0.076 mASD
09 Oct 20:15 ▬ steady 0.076 mASD
09 Oct 20:00 ▲ +0.1 cm 0.076 mASD
09 Oct 19:45 0.075 mASD

Station Details

  • Monitoring Station: Brampton Racecourse
  • Watercourse: Alconbury Brook
  • Nearest Town: Brampton
  • County: Cambridgeshire
  • Nearest reservoir: Grafham (7.1 km) · 58.3% full (as of 5 Oct 2026)
  • Coordinates: 52°19'50"N 0°13'41"W (52.330595, -0.227967)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 2 Jun 1995
  • Status: Active
  • Station Type: River level station
Technical details: references, datum, range, flow archive
  • Station Reference: E21713
  • Also at this site: BRAMPTON RACECOURSE GS (E24492, flow, reporting)
  • RLOI id: 6150 (the EA's check-for-flooding station id)
  • EA Gauge ID: E21713-level-stage-i-15_min-mASD
  • Parameter: Level
  • Unit: mASD
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No
  • Catchment Area: Upper and Bedford Ouse
  • Typical Range: 0.090 – 1.514 mASD
  • Drainage Area: 202 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: 0.08 mASD (EA at 10 Oct 01:15)
  • 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.

3 storm overflows are traced upstream of this gauge, the nearest 8.8 km away along the river. 0 report discharging now, 2 report not discharging, and for 1 the monitor is offline or has not reported, so their status is not known.

💧
Anglian Water · into Ellington Brook · 8.8 km upstream along the river
4 spills · 25 hours in 2025
Not discharging now · last
💧
Anglian Water · into Ellington Brook · 18.6 km upstream along the river
13 spills · 155 hours in 2025
Monitor offline: it cannot say whether it is discharging
💧
Anglian Water · into Alconbury Brook · 21.2 km upstream along the river
2 spills · 4 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 Alconbury Brook · 3.0 km away in a straight line · no mapped watercourse close enough to be sure
14 spills · 148 hours in 2025
Not discharging now · last
💧
Anglian Water · into Trib River Great Ouse · 4.3 km away in a straight line · its watercourse is not on the river map
3 spills · 5 hours in 2025
Monitor offline: it cannot say whether it is discharging
💧
Anglian Water · into Tributary Of Diddington Brook · 4.8 km away in a straight line · its watercourse is not on the river map
66 spills · 731 hours in 2025
Not discharging now · last
💧
Anglian Water · into Trib Alconbury Brook · 5.0 km away in a straight line · no mapped watercourse close enough to be sure
2 spills · 18 hours in 2025
Not discharging now · last
💧
Anglian Water · into Bedford Ouse Nt · 5.7 km away in a straight line · its recorded watercourse is not the one mapped beside it
4 spills · 44 hours in 2025
Not discharging now · last

4 other overflows within 6 km are downstream of this gauge or on another branch of the river network, so they are 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 1.51 m on about 1 day. This year so far: 2 days.

2026 2 days so far
2025 0 days
2024 1 day, 1 of them high · 1 high
2023 2 days
2022 0 days
2021 2 days, 1 of them high · 1 high
2020 3 days, 2 of them high · 2 high
2019 0 days
2018 2 days
2017 1 day

Counted from each day's highest reading. Days with missing or implausible readings are left out. The darker part is days above 1.72 m, the level this gauge tops only a few days a year.

Flood history near this gauge

Official Environment Agency warnings issued since 2019 for the 4 flood areas linked to this gauge (nearest 1.4 km away).

13flood warnings 29flood alerts

Most recent flood warning: 2 Jan 2024 — Alconbury Brook at Hamerton, Alconbury Weston, Alconbury, Little Stukeley and Brampton

Year by year
YearWarningsAlerts
2026 0 6
2025 0 4
2024 2 8
2023 1 7
2022 0 4
2021 6 0
2020 3 0
2019 1 0

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 Brampton flood history.

Flood areas linked to this gauge

Flood warnings and alerts are issued for whole areas. These are the 4 areas linked to this gauge, nearest first.

Catchment Character

🌊 Flashy Rain runs off fast — levels rise and fall sharply, often 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
0.32
flashy — rain runs off fast
Avg Annual Rainfall
610 mm/yr
1991–2020 · +1% since 1941–70
Urban Extent
1.7%
largely rural
Highest Daily Mean Flow
62.90 m³/s
25 Nov 2012 · daily mean, not the instantaneous peak
Flow-Duration Curve
mean 0.8843.940.1500.0135% (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 2%Grassland 19%Arable 73%Urban 5%
Arable 81% → 73% since 1990

Flow affected by: 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

Flat V weir gauging a rural, impervious catchment with some artificial influences. Record includes data from earlier broad-crested weir.

More detail

The catchment

Predominantly impervious catchment, Boulder Clay covers about half of the area. Agricultural land use, mainly arable.

The station

Flat V weir in trapezoidal channel (used to have ultrasonic for use when head above crest >1m) replaced (from 03/06/1995) former broad-crested CP weir with central low flow notch (closed in Sep 1993). Removed from peak flows dataset in May 2016 (WINFAP Files v4).

How it measures flow

Drowns at approx. 1m stage and spills at 2m on a nearby horse racecourse. High flows impeded by bridges u/s and d/s. Theoretical rating but hydraulic model calibration for flanks prior to Apr 1978. Pre 1993 rating modified by current meter measurement to correct for drowning.

Flow regime

Runoff affected by industrial/agricultural abstraction and effluent returns.

The flow record

The highest flow on record is estimated by the EA to be 70 cumecs on 10/04/1998, although the gauge was subject to bypassing. Data post 1995 reprocessed following rating review. High flows from pre-1995 structure and post-1995 structure appear inconsistent.

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
Gauging structure
Operating since
1963
Station datum
9.4 mAOD
Flow record
1963–2024 · 61 yrs · 93% complete
Hydrometric area
33
Measured by
Environment Agency

Frequently asked questions

Is the Alconbury Brook at Brampton Racecourse flooding today?

The current level is 0.08m, which is below the typical range. Flooding is very unlikely at this level.

Is the river level rising or falling at Brampton Racecourse?

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 Alconbury Brook at Brampton Racecourse?

The typical range at this station is 0.09m to 1.51m, based on Environment Agency historical data. Levels above 1.51m 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 →