Get notified about Swallowfield Side Channel — tick as many as you like, they all share the notify settings below.
Alert me when (tick one or more)
Height for "Above a height"
Drag the line on the chart, or type a value:mASD
Quick pick:
You'll be notified when this gauge is rising more than 0.10 mASD/hr — a sign of rapidly increasing water levels.
Beta. You'll be notified when a flood wave detected at an upstream gauge is forecast to reach this station, with an estimated arrival time. Accuracy improves as we verify more waves.
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.
Notify by (tick one or more)
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On iPhone: tap Share → Add to Home Screen first, then open it from there and set the alert.
Each one is saved as its own alert — pause or remove them individually any time.
Not an emergency service — if in danger call 999. Alerts rely on
EA/SEPA data and are best-efforts. Terms
Current Level
0.142 mASD
▬ Steady
24h Max
0.164 mASD
24h Min
0.142 mASD
Typical Range
0.19 - 0.73
mASD
Highest Recorded
2.26 mASD
11 Jun 2025
Since Nov 2012
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.
Downstream level
7 days
The level on the DOWNSTREAM side of this lock/weir structure — a separate EA
measure from the main (upstream) reading shown on the Current tab. Threshold bands
are computed from this gauge's own downstream history.
Long Term
🌍 floodradar.co.uk
—
Consecutive rainy days0 → 10+
Days Above Normal
This year vs 5-year monthly range
Recent Readings
Falling · -1 cm over 6h
23 Aug 23:00▼ -0.1 cm0.142 mASD
23 Aug 22:45▼ -0.2 cm0.143 mASD
23 Aug 21:30▼ -0.1 cm0.145 mASD
23 Aug 21:15▬ steady0.146 mASD
23 Aug 21:00▼ -0.1 cm0.146 mASD
23 Aug 20:45▼ -0.1 cm0.147 mASD
23 Aug 20:30▬ steady0.148 mASD
23 Aug 20:15▼ -0.1 cm0.148 mASD
23 Aug 20:00▼ -0.1 cm0.149 mASD
23 Aug 19:45▬ steady0.150 mASD
23 Aug 19:30▼ -0.1 cm0.150 mASD
23 Aug 19:15▬ steady0.151 mASD
23 Aug 19:00▼ -0.1 cm0.151 mASD
23 Aug 18:45▼ -0.1 cm0.152 mASD
23 Aug 18:30▬ steady0.153 mASD
23 Aug 18:15▼ -0.1 cm0.153 mASD
23 Aug 18:00▬ steady0.154 mASD
23 Aug 17:45▼ -0.1 cm0.154 mASD
23 Aug 17:30▼ -0.1 cm0.155 mASD
23 Aug 17:150.156 mASD
Rainfall & Weather
Loading rainfall and weather data...
Flood history near this gauge
Official Environment Agency warnings issued since 2011 for the 10 flood
areas linked to this gauge (nearest 0.8 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 Swallowfield 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.
Nearby Groundwater
Soil Moisture
🚽 Storm overflows on this river
Frequently asked questions
Is the River Blackwater at Swallowfield Side Channel flooding today?
The current level is 0.14m, which is below the typical range. Flooding is very unlikely at this level.
Is the river level rising or falling at Swallowfield Side Channel?
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 Blackwater at Swallowfield Side Channel?
The typical range at this station is 0.19m to 0.73m, based on Environment Agency historical data. Levels above 0.73m 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.
Embed this gauge on your website
Free live river-level widget — ideal for parish councils, angling clubs and local sites. Updates automatically.
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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:
