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0.50

Blyth

Ryton
Idle and Torne catchment • Blyth • Nottinghamshire • ID: 4091 • Level
(22m ago) • 4 readings/hr • 135 views

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Current Level
0.501 mASD
▬ Steady
24h Max
0.520 mASD
24h Min
0.501 mASD
Typical Range
0.42 - 1.60
mASD
Highest Recorded
2.88 mASD
30 Oct 1993
Since Apr 1990
Current level is 17% of this
Current Flow
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🚽 Sewage overflows nearby

Recent Water Levels

🌍 floodradar.co.uk
1 day

Recent Readings

Steady over 6h
24 Aug 00:30 ▼ -0.1 cm 0.501 mASD
24 Aug 00:15 ▬ steady 0.502 mASD
24 Aug 00:00 ▬ steady 0.502 mASD
23 Aug 23:45 ▼ -0.1 cm 0.502 mASD
23 Aug 23:30 ▬ steady 0.503 mASD
23 Aug 23:15 ▬ steady 0.503 mASD
23 Aug 23:00 ▼ -0.1 cm 0.503 mASD
23 Aug 22:45 ▼ -0.1 cm 0.504 mASD
23 Aug 21:30 ▬ steady 0.505 mASD
23 Aug 21:15 ▬ steady 0.505 mASD
23 Aug 21:00 ▲ +0.1 cm 0.505 mASD
23 Aug 20:45 ▬ steady 0.504 mASD
23 Aug 20:30 ▲ +0.1 cm 0.504 mASD
23 Aug 20:15 ▬ steady 0.503 mASD
23 Aug 20:00 ▲ +0.1 cm 0.503 mASD
23 Aug 19:45 ▲ +0.1 cm 0.502 mASD
23 Aug 19:30 ▬ steady 0.501 mASD
23 Aug 19:15 ▬ steady 0.501 mASD
23 Aug 19:00 ▬ steady 0.501 mASD
23 Aug 18:45 0.501 mASD

Rainfall & Weather

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Flood history near this gauge

Official Environment Agency warnings issued since 2009 for the 8 flood areas linked to this gauge (nearest 0.5 km away).

2severe warnings 37flood warnings 33flood alerts

Most recent flood warning: 7 Jan 2025River Idle at West Retford and Ordsall

Year by year
YearSevereWarningsAlerts
2026 0 0 3
2025 0 4 2
2024 0 4 3
2023 2 9 4
2022 0 1 2
2021 0 1 3
2020 0 4 2
2019 0 12 5
2018 0 1 2
2016 0 0 1
2014 0 0 1
2012 0 0 3
2011 0 1 0
2009 0 0 2

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.

Nearby Stations

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Station Details

  • Monitoring Station: Blyth
  • Watercourse: River Ryton
  • Nearest Town: Blyth
  • County: Nottinghamshire
  • Coordinates: 53°22'38"N 1°3'12"W (53.377166, -1.053244)
  • Open in: Google Maps · Apple Maps (opens your maps app)
  • Date Opened: 1 Sep 1970
  • Status: Active
  • Station Type: River level station
  • Station Reference: 4091
  • EA Gauge ID: 4091-level-stage-i-15_min-mASD
  • Parameter: Level
  • Unit: mASD
  • Typical rise rate: 1 cm/hr (p95 sustained over 90 days)
  • Typical data delay: ~22 min (measured reading→publication lag)
  • Tidal: No
  • Lock / structure: No
  • Catchment Area: Idle and Torne
  • Typical Range: 0.422 – 1.600 mASD
  • Drainage Area: 231 km² upstream of this gauge
  • Flow Data: Available (m³/s) via EA Hydrology
  • EA Cross-check: 0.50 mASD (EA at 24 Aug 00:15)
  • Flow Archive: National River Flow Archive ↗

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

🌊 Groundwater-fed Slow 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 Recorded Flow
33.76 m³/s
8 Nov 2019
Flow-Duration Curve
mean 1.633.961.220.6095% (high)% of days exceeded95% (low)
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 10%Grassland 19%Arable 55%Urban 15%
Arable 63% → 55% since 1990

Flow affected by: effluent returns, industrial / agricultural abstraction.

Photos

Gauging-station photographs from the National River Flow Archive (UKCEH).

Photos © NRFA / UKCEH & the measuring authority — shown at web resolution. Full gallery on the NRFA ↗

About this gauge

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.

How it measures flow

Extreme events overtop flood banks. New laser gauge provides reasonable quality data.

Flow regime

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).

Descriptions from the National River Flow Archive (UKCEH). NRFA station record ↗

Gauge Details

How this gauging station is built and how long it has measured (NRFA / UKCEH).

Gauge type
Gauging structure
Operating since
1985
Station datum
8.0 mAOD
Flow record
1984–2024 · 40 yrs · 99% complete
Peak-flow record
since 1984
Hydrometric area
28
Measured by
Environment Agency

Frequently asked questions

Is the River Ryton at Blyth flooding today?

The current level is 0.50m, 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 steady. The chart above shows the last 7 days of measurements, 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 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.

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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:

Check any UK postcode’s flood risk →

🏠 Buying or renting around here? Get the Property Flood-Risk Report for any English postcode — official risk band, floods since 1946, warning history, river behaviour and nearby storm overflows. £19 one-off. Learn more →