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⤴Unusual rise — FloodRadar+Top 1% rise rate for this gauge.
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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 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.
Get notified when recent rainfall near this gauge crosses its learnt rise trigger — an early "watch"
signal, typically hours before a rise. Experimental; not an official flood warning.
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Current Level
0.168 mASD
▬ Steady
24h Max
0.169 mASD
24h Min
0.167 mASD
Typical Range
0.14 - 1.05
mASD
Highest Recorded
2.00 mASD
25 Jun 2007
Since Dec 1974
Current level is 8% of this
🚽Sewage overflows nearby
Recent Water Levels
🌍 floodradar.co.uk
1 day
Prediction V2
Prediction Eris
Nimbus beta
Experimental model fusing soil moisture, river flow, groundwater and catchment
character. Shown with its calibrated 10–90% confidence band. Under evaluation —
not yet promoted, so treat as a second opinion.
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
Steady over 6h
23 Aug 23:45▬ steady0.168 mASD
23 Aug 23:30▬ steady0.168 mASD
23 Aug 23:15▬ steady0.168 mASD
23 Aug 23:00▬ steady0.168 mASD
23 Aug 22:45▲ +0.1 cm0.168 mASD
23 Aug 21:30▬ steady0.167 mASD
23 Aug 21:15▬ steady0.167 mASD
23 Aug 21:00▬ steady0.167 mASD
23 Aug 20:45▬ steady0.167 mASD
23 Aug 20:30▬ steady0.167 mASD
23 Aug 20:15▬ steady0.167 mASD
23 Aug 20:00▬ steady0.167 mASD
23 Aug 19:45▬ steady0.167 mASD
23 Aug 19:30▬ steady0.167 mASD
23 Aug 19:15▬ steady0.167 mASD
23 Aug 19:00▬ steady0.167 mASD
23 Aug 18:45▬ steady0.167 mASD
23 Aug 18:30▬ steady0.167 mASD
23 Aug 18:15▬ steady0.167 mASD
23 Aug 18:000.167 mASD
Rainfall & Weather
Loading rainfall and weather data...
Flood history near this gauge
Official Environment Agency warnings issued since 2012 for the 18 flood
areas linked to this gauge (nearest 2.2 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 Southwell 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
🌊 Mixed responseA balance of quick runoff and slower groundwater baseflow.
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
0.62
mixed response
Avg Annual Rainfall
684 mm/yr
1991–2020 · +2% since 1941–70
Urban Extent
4.0%
partly urbanised
Highest Recorded Flow
10.70 m³/s
25 Jun 2007
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.
Crump profile Flat V weir on the Greet to monitor flows where the river crosses a geological boundary.
More detail
The catchment
Geology: predominantly Sherwood/Mercia Sandstone, with some Mercia Mudstone along southern border. Low relief, river channels lined with clay, sand and gravel alluvium, more extensive u/s. Rural, agricultural land use.
The station
Crump profile Flat V (1:10) weir, 6m wide, in concrete 1:1 trapezoidal channel, straightened reach. Rough, inclined sides to about 2.5m. Installed to monitor flows where river crosses Sherwood/Mercia Sandstone to Mercia Mudstone boundary.
How it measures flow
Drowned flow rating established by high flow gauging in June 2007, full period of record reprocessed.
Flow regime
Natural regime with substantial groundwater component - but responsive to significant rainfall events.
The flow record
Short term rises and falls in flow due to upstream sluice gate operation.
How this gauging station is built and how long it has measured (NRFA / UKCEH).
Gauge type
Flat-V weir
Operating since
1974
Station datum
19.7 mAOD
Flow record
1974–2024 · 50 yrs · 100% complete
Hydrometric area
28
Measured by
Environment Agency
Nearby Groundwater
Soil Moisture
Possible storm-overflow correlation
🚽 Storm overflows on this river
Frequently asked questions
Is the River Greet at Southwell flooding today?
The current level is 0.17m, which is within the typical range of 0.14 to 1.05m. Flooding is unlikely at this level.
Is the river level rising or falling at Southwell?
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 Greet at Southwell?
The typical range at this station is 0.14m to 1.05m, based on Environment Agency historical data. Levels above 1.05m 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:
