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⤴Unusual rise — FloodRadar+Top 1% rise rate for this gauge.
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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.
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EA/SEPA data and are best-efforts. Terms
Current Level
0.252 mASD
▬ Steady
24h Max
0.268 mASD
24h Min
0.228 mASD
Typical Range
0.25 - 1.00
mASD
Highest Recorded
3.25 mASD
11 Mar 2024
Since May 1992
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
Falling · -0.6 cm over 6h
23 Aug 23:45▬ steady0.252 mASD
23 Aug 23:30▬ steady0.252 mASD
23 Aug 23:15▼ -0.2 cm0.252 mASD
23 Aug 23:00▼ -0.1 cm0.254 mASD
23 Aug 22:45▼ -0.4 cm0.255 mASD
23 Aug 21:30▼ -0.1 cm0.259 mASD
23 Aug 21:15▼ -0.3 cm0.260 mASD
23 Aug 21:00▼ -0.1 cm0.263 mASD
23 Aug 20:45▬ steady0.264 mASD
23 Aug 20:30▲ +0.1 cm0.264 mASD
23 Aug 20:15▼ -0.1 cm0.263 mASD
23 Aug 20:00▼ -0.2 cm0.264 mASD
23 Aug 19:45▲ +0.1 cm0.266 mASD
23 Aug 19:30▲ +0.1 cm0.265 mASD
23 Aug 19:15▬ steady0.264 mASD
23 Aug 19:00▲ +0.6 cm0.264 mASD
23 Aug 18:45▼ -0.1 cm0.258 mASD
23 Aug 18:30▬ steady0.259 mASD
23 Aug 18:15▲ +0.1 cm0.259 mASD
23 Aug 18:000.258 mASD
Rainfall & Weather
Loading rainfall and weather data...
Flood history near this gauge
Official Environment Agency warnings issued since 2012 for the 7 flood
areas linked to this gauge (nearest 3.0 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 Mansfield 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
🌊 Urban & flashyHeavily built-up — rain runs off hard surfaces fast, so levels can spike 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
0.84
groundwater-fed — slow & steady
Avg Annual Rainfall
765 mm/yr
1991–2020 · +6% since 1941–70
Urban Extent
39%
heavily urbanised
Median Annual Flood
13.15 m³/s
QMED — typical yearly peak flow
Highest Recorded Flow
9.32 m³/s
20 Oct 2023
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 that replaces (1996) 28059 Mansfield STW - closed in 1984.
More detail
The catchment
Moderate relief catchment near headwaters of Maun. Rises on Magnesian Limestone and crosses onto Sherwood S'st. Heavily urbanised with Mansfield and Sutton in Ashfield immediately u/s.
The station
Crump profile Flat V (1:10) weir, 4.8m wide, low vertical wingwalls set in wider channel. Lb at about 2m, Rb higher. Weir prone to u/s siltation - sand is mobile, especially under high flow conditions and is washed away in high events - results in variable levels and scatter in gaugings. Replaced 28059 Mansfield - old site was replaced due to drowning of the flume and accumulation of rubbish. Structure situated downstream of sewage works in Mansfield.
How it measures flow
Flows are derived from the Flat-V Theoretical equation throughout the full flow range. Mobilisation of sand results in variable levels, scatter in gaugings. Difficult to gauge above 0.4mASD due to very flashy response; difficult to catch events. Structure becomes non-modular at high flows.
Flow regime
Urbanised catchment. Very responsive to rainfall, very rapid rise and fall in the hydrograph. Low flows dominated by sewage effluent and augmented by runoff from urban area that effectively increases catchment area. Very atypical water balance. Second rise in flood hydrograph often follows initial peak from urban runoff, as flows from the rural upper catchment move downstream.
The flow record
Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).
How this gauging station is built and how long it has measured (NRFA / UKCEH).
Gauge type
Flat-V weir
Operating since
1992
Station datum
69.2 mAOD
Flow record
1992–2024 · 32 yrs · 100% complete
Peak-flow record
since 1992
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 Maun at Mansfield The Dykes flooding today?
The current level is 0.25m, which is within the typical range of 0.25 to 1.00m. Flooding is unlikely at this level.
Is the river level rising or falling at Mansfield The Dykes?
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 Maun at Mansfield The Dykes?
The typical range at this station is 0.25m to 1.00m, based on Environment Agency historical data. Levels above 1.00m 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.
Preview
📮 Flood risk by postcode near this gauge
Postcodes within 5 km with properties in the Environment Agency’s rivers-and-sea flood-risk bands:
View of weir from slightly downstream on the left bank
View of weir from upstream on the left bank
View of weir from immediately downstream
