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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
0.489 mASD
▼ Easing
24h Max
0.550 mASD
24h Min
0.489 mASD
Typical Range
0.42 - 1.60
mASD
Highest Recorded
2.32 mASD
EA official record
A 2.88 reading (30 Oct 1993) sits in our unverified raw history and is not treated as the record
Current level is 21% of this
Current Flow
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🚽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 6 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.
10 storm overflows are traced upstream of this gauge, the nearest 4.4 km away along the river. 0 report discharging now, 10 report not discharging.
Severn Trent Water · into Harworth Sewage Dyke · 5.3 km away in a straight line · its watercourse is not on the river map
9 spills · 71 hours in 2025
Not discharging now · last
2 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 →
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 Blyth flood history.
Flood areas linked to this gauge
Flood warnings and alerts are issued for whole areas. These are the 8 areas linked to this gauge, nearest first.
🌊 Groundwater-fedSlow and steady — fed largely by groundwater, so levels change gradually, not in sudden spikes.
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
0.76
groundwater-fed — slow & steady
Avg Annual Rainfall
656 mm/yr
1991–2020 · +5% since 1941–70
Urban Extent
7.2%
partly urbanised
Median Annual Flood
11.65 m³/s
QMED — typical yearly peak flow
Highest Daily Mean Flow
33.76 m³/s
8 Nov 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.
Laserflow index velocity gauge post 2021. Previously electromagnetic station installed in March 1984. Replaced Serlby Park (28016).
More detail
The catchment
Moderate and low relief catchment. Headwaters drain Magnesian Limestone; bulk underlain by Permian Marl and Sherwood Sandstone. Mainly Drift free. Apart from Worksop, wholly rural, mainly arable farming.
The station
Laserflow index velocity gauge operational from 2021, in a straight reach downstream of a gentle bend. Previously electromagnetic station installed in March 1984. Data transmitted to West Stockwith pumping station to control regime to the tidal Trent.
Deep, slow, baseflow dominated flow regime. Moderate net effect on flows by WRWs and abstraction.
The flow record
Performance of the Laser flow gauge and the previous electromagnetic gauge is reasonable during full range. Heavy weed growth through the entire river causes backing up of levels during the summer. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).
Timing, not cause. Gauges can move together simply because the same rain fell on both.
Frequently asked questions
Is the River Ryton at Blyth flooding today?
The current level is 0.49m, which is within the typical range of 0.42 to 1.60m. Flooding is unlikely at this level.
Is the river level rising or falling at Blyth?
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 River Ryton at Blyth?
The typical range at this station is 0.42m to 1.60m, based on Environment Agency historical data. Levels above 1.60m 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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19 Oct 2016 Downstream section. Stage 0.464m.
19 Oct 2016 Upstream section flowing under A1(M). Stage 0.464m.
1985
1985
1985
Stilling well and gauge boards