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🌊 Tidal flow — rises and falls with each tide

OFFORD GRAFHAM INTAKE SIDELOOKER GS

Unknown 🌊 Tidal
• Cambridgeshire • ID: E41847 • Flow
This gauge is tidally influenced — levels rise and fall with each tide, so rapid changes here are normal and don't necessarily indicate flooding.
(21m ago) • 4 readings/hr • 154 views
Current Flow
5.100 m3/s
▲ Rising (-84cm/hr)
24h Max
6.750 m3/s
24h Min
3.410 m3/s
Typical Range
-
Highest Recorded
49.97 m3/s
1 Mar 2025
Since Feb 2025
🚽 Sewage overflows nearby

Recent Flow Readings

🌍 floodradar.co.uk
1 day

Recent Readings

Rising · +94 cm over 6h
10 Oct 13:15 ▼▼ -21 cm 5.100 m3/s
10 Oct 13:00 ▲▲ +89 cm 5.310 m3/s
10 Oct 12:45 ▲▲ +50 cm 4.420 m3/s
10 Oct 12:30 ▼ -1 cm 3.920 m3/s
10 Oct 12:15 ▲▲ +14 cm 3.930 m3/s
10 Oct 12:00 ▲▲ +28 cm 3.790 m3/s
10 Oct 11:45 ▼▼ -21 cm 3.510 m3/s
10 Oct 11:30 ▲▲ +13 cm 3.720 m3/s
10 Oct 11:15 ▲▲ +7 cm 3.590 m3/s
10 Oct 11:00 ▼▼ -55 cm 3.520 m3/s
10 Oct 10:30 ▼▼ -42 cm 4.070 m3/s
10 Oct 10:15 ▲▲ +33 cm 4.490 m3/s
10 Oct 10:00 ▲▲ +62 cm 4.160 m3/s
10 Oct 09:45 ▼▼ -117 cm 3.540 m3/s
10 Oct 09:30 ▬ steady 4.710 m3/s
10 Oct 09:15 ▼▼ -14 cm 4.710 m3/s
10 Oct 08:45 ▲▲ +144 cm 4.850 m3/s
10 Oct 08:30 ▼▼ -83 cm 3.410 m3/s
10 Oct 08:00 ▲▲ +8 cm 4.240 m3/s
10 Oct 07:45 4.160 m3/s

Station Details

  • Monitoring Station: OFFORD GRAFHAM INTAKE SIDELOOKER GS
  • Watercourse: —
  • County: Cambridgeshire
  • Nearest reservoir: Grafham (7.0 km) · 58.3% full (as of 5 Oct 2026)
  • Coordinates: 52°16'49"N 0°13'20"W (52.280318, -0.222175)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Status: Active
  • Station Type: Tidal / coastal station (inferred)
Technical details: references, datum, range, flow archive
  • Station Reference: E41847
  • EA Gauge ID: E41847-flow-stage-i-15_min-m3_s
  • Parameter: Flow
  • Unit: m3/s
  • Typical rise rate: 720 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: 🌊 Yes — levels follow the tide
  • Lock / structure: No

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

None of the storm overflows FloodRadar holds is traced upstream of this gauge on the mapped river network. That is not the same as none: the map leaves out many small streams and culverts, so an overflow it cannot place may still drain here, and not every company publishes every overflow. Those nearby are listed below.

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 Tributary Of Diddington Brook · 1.7 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 Paxton Brook · 3.1 km away in a straight line · its watercourse is not on the river map
5 spills · 65 hours in 2025
Not discharging now · last
💧
Anglian Water · into River Ouse · 4.6 km away in a straight line · its recorded watercourse is not the one mapped beside it
6 spills · 2 hours in 2025
Not discharging now · last
💧
Anglian Water · into Trib River Great Ouse · 5.9 km away in a straight line · its watercourse is not on the river map
3 spills · 5 hours in 2025
Not discharging now · last

2 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

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Flood history near this gauge

Official Environment Agency warnings issued since 2019 for the 4 flood areas linked to this gauge (nearest 4.4 km away).

13flood warnings 0flood alerts

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

Year by year
YearWarningsAlerts
2024 2 0
2023 1 0
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.

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.

Frequently asked questions

Is OFFORD GRAFHAM INTAKE SIDELOOKER GS flooding today?

The latest recorded level is 5.10m. Compare it with the recent history on the chart above to judge whether levels are unusually high.

Is the river level rising or falling at OFFORD GRAFHAM INTAKE SIDELOOKER GS?

Based on the most recent readings, the level is currently rising. 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.

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 →