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⤴Unusual rise — FloodRadar+Top 1% rise rate for this gauge.
Height for "Above a height"
Drag the line on the chart, or type a value:mASD
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You'll be notified when this gauge is rising more than 0.10 m/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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Not an emergency service — if in danger call 999. Alerts rely on
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Current Level
0.164 mASD
▼ Easing
24h Max
0.218 mASD
24h Min
0.105 mASD
Typical Range
0.13 - 1.25
mASD
Highest Recorded
2.35 mASD
EA official record
2.35 in our data (since Nov 2012)
Current level is 7% of this
🚽Sewage overflows nearby
Recent Water Levels
🌍 floodradar.co.uk
1 day
EA forecast (official)
Prediction V2
Prediction Eris
Nimbus beta
Experimental model fusing soil moisture, river flow, groundwater and catchment
character. The shaded band is its 10–90% range, widened so that about 80% of recent outcomes fall inside it.
Under evaluation — not yet promoted, so treat as a second opinion. The nearest rain gauge has sent no readings in the last day, so Nimbus has no recent measured rain to work from here.
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.
6 storm overflows are traced upstream of this gauge, the nearest 8.2 km away along the river. 0 report discharging now, 6 report not discharging.
Southern Water · into The Herons Ghyll · 5.7 km away in a straight line · no mapped watercourse close enough to be sure
28 spills · 126 hours in 2025
Not discharging now · last
7 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 →
In a typical year this gauge reaches its typical high of 1.25 m
on about 11 days.
This year so far: 6 days.
20266 days, 4 of them high · 4 highso far
202510 days, 4 of them high · 4 high
202413 days, 6 of them high · 6 high
202313 days, 2 of them high · 2 high
202212 days, 5 of them high · 5 high
202114 days, 7 of them high · 7 high
202016 days, 7 of them high · 7 high
201917 days, 3 of them high · 3 high
20184 days
20172 days
Counted from each day's highest reading. Days with missing or implausible readings are left out.
The darker part is days above 1.96 m, the level this gauge tops only a few days a year.
Flood history near this gauge
Official Environment Agency warnings issued since 2013 for the 1 flood
area linked to this gauge (nearest 9.8 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 Groombridge flood history.
Flood areas linked to this gauge
Flood warnings and alerts are issued for whole areas. This is the area linked to this gauge, nearest first.
Timing, not cause. Gauges can move together simply because the same rain fell on both.
Frequently asked questions
Is the Eridge Stream Tributary Medway at Hendal Bridge flooding today?
The current level is 0.16m, which is within the typical range of 0.13 to 1.25m. Flooding is unlikely at this level.
Is the river level rising or falling at Hendal Bridge?
Based on the most recent readings, the level is currently falling slightly. 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.
What is a normal level for the Eridge Stream Tributary Medway at Hendal Bridge?
The typical range at this station is 0.13m to 1.25m, based on Environment Agency historical data. Levels above 1.25m 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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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:
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