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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 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
EA/SEPA/NRW data and are best-efforts. Terms
Current Level
0.308 m
▲ Rising (+5cm/hr)
24h Max
0.370 m
24h Min
0.254 m
Typical Range
0.07 - 0.51
m
Highest Recorded
1.72 m
EA official record
1.72 in our data (since Jan 1976)
Current level is 18% 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.
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.
Flow Data: Daily mean flow (m³/s) to 8 Oct (2 days behind — the EA publishes each day's mean a day or two after it ends; unchecked, provisional)via EA Hydrology
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.
9 storm overflows are traced upstream of this gauge, the nearest 990 m away along the river. 1 reports discharging now, 7 report not discharging, and for 1 the monitor is offline or has not reported, so their status is not known.
United Utilities · into Carr Brook · 4.5 km away in a straight line · several watercourses close by, nothing to choose between them
60 spills · 479 hours in 2025
Not discharging now · last
12 more within 6 km whose connection is not known.
11 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 0.51 m
on about 43 days.
This year so far: 19 days.
202619 days so far
202538 days, 5 of them high · 5 high
202445 days, 10 of them high · 10 high
202357 days, 7 of them high · 7 high
202230 days, 6 of them high · 6 high
202158 days, 9 of them high · 9 high
202047 days, 7 of them high · 7 high
201952 days, 9 of them high · 9 high
201822 days
201742 days
Counted from each day's highest reading. Days with missing or implausible readings are left out.
The darker part is days above 0.77 m, the level this gauge tops only a few days a year.
Flood history near this gauge
Official Environment Agency warnings issued since 2006 for the 16 flood
areas linked to this gauge (nearest 1.7 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 Styal, Wilmslow flood history.
Flood areas linked to this gauge
Flood warnings and alerts are issued for whole areas. These are the 16 areas linked to this gauge, nearest first.
🌊 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
0.55
mixed response
Avg Annual Rainfall
991 mm/yr
1991–2020 · +8% since 1941–70
Urban Extent
6.3%
partly urbanised
Median Annual Flood
9.96 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
23.67 m³/s
31 Jul 2019 · daily mean, not the instantaneous peak
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.
Land Cover (2023)
Woodland 5%Grassland 78%Arable 3%Urban 13%
Flow affected by: surface-water abstraction, public water supply, groundwater abstraction, effluent returns, industrial / agricultural abstraction.
Photos
Gauging-station photographs from the National River Flow Archive (UKCEH).
A compound crump weir on the River Dean. Moorland headwaters.
More detail
The catchment
Steep moorland headwaters drain Millstone Grit from W Pennines and contain Lamaload Res. Lower catchment developed on Boulder Clay covered Triassic sandstones and contains Bollington.
The station
Station opened late 1966 with Compound Crump weir. All sections 3.05m wide, the two side weirs being 0.46m above central lower crest. Downstream recorder added July 2013 to monitor effect of downstream "pre-weir" to aid fish passage. No events above bankfull.
How it measures flow
The channel bed upstream is silty, and the main problem has been blockage of the inlet pipe; the well Pipe extended July 2007. Channel accretes at high flow requiring regular clearance. Low to medium range calibrated by current meter. Gauged close to QMED in 2019. Observations during events confirm weir highly unlikely to have ever drowned (see photos).
Flow regime
Although catchment descriptors are very similar, flow response is much slower and less peaky than at Wilmslow. An electro-magnetic gauge at Manchester Airport downstream of the confluence of the Dean and the Bollin confirms flows at the two upstream stations. (The Manchester Airport station is now closed). Significant flow disturbance from reservoir, abstractions and returns. Lamaload Reservoir (completed 1964) in the headwaters of the catchment.
The flow record
Some peaks in the series are thought to have been under-recorded; however, the percentage under-estimate of flow is thought to be low. Daily flows and AMAX during high flows in July/August 2019 may be overestimated due to silt on the outer wings of the compound weir. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).
Timing, not cause. Gauges can move together simply because the same rain fell on both.
Frequently asked questions
Is the Dean at Stanneylands flooding today?
The current level is 0.31m, which is within the typical range of 0.07 to 0.51m. Flooding is unlikely at this level.
Is the river level rising or falling at Stanneylands?
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.
What is a normal level for the Dean at Stanneylands?
The typical range at this station is 0.07m to 0.51m, based on Environment Agency historical data. Levels above 0.51m 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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📮 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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