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Home › Rivers › River Blythe

River Blythe water levels

Live levels from 2 monitoring stations across Warwickshire, West Midlands, updated every 15 minutes.

2stations
0above typical high

Gauges

Monitoring stations, source to mouth

StationTownLevel nowStatusTrend
Cheswick GreenCheswick Green0.26 mASD 1h agoNormal—
downstream, distance by river not measured
Castle FarmColeshill0.69 mASD 1h agoNormal▲

Stations are listed from source to mouth as the water flows, traced on the river map (OS Open Rivers) and the Environment Agency’s own links between its gauges. A distance “by river” is along the river, and is shown only where the map traces the path.

Contains OS data © Crown copyright and database rights 2026.

Gauged tributaries

Streams and rivers with a gauge whose water joins the Blythe above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.

No gauged tributary joins the Blythe above Castle Farm on the river map. Streams without a gauge are not counted here.

Where the Blythe goes

Below Castle Farm, its water next reaches Lea Marston, a gauge on River Tame, 8.0 km by river downstream.

Tributaries and where they join are traced on the river map (OS Open Rivers, edition 2026-04) and the Environment Agency’s links between its gauges. The map holds distances between gauges, not the junctions themselves, so a junction is placed between two gauges, and no further up than the tributary’s own lowest gauge. Contains OS data © Crown copyright and database rights 2026.

Streams without a gauge

Named streams on the river map that flow into the Blythe and have no gauge of their own. Each has a page with what is known about it: the next gauge downstream, and any storm overflows or water-sampling points placed on it.

Storm overflows upstream

4 storm overflows are traced upstream of Castle Farm, the Blythe’s lowest gauge on the river map: on the Blythe itself, on its gauged tributaries, and on smaller streams that join above there.

  • 0 report discharging now
  • 4 not discharging
  • 0 offline or silent: 0 monitor offline, 0 status unknown, 0 no live feed

Official figures for 2025, for the overflows traced upstream of Castle Farm: 109 spills over 1,142 hours in total, across all 4.

Each overflow is listed in the stretch above the first gauge its water reaches, from the source down, as on the Gauges tab. A stretch of the Blythe includes the smaller streams that join it there.

Above Cheswick Green, the Blythe’s highest gauge1 overflow
  • Earlswood (Wood End) Sewage PS Not discharging
    Severn Trent Water · into Spring Brook · 4.6 km by river above Cheswick Green · 2025: 36 spills, 510 h
Between Cheswick Green and Castle Farm3 overflows
  • Friday Lane Not discharging
    Severn Trent Water · into River Blythe (Trib) · 26.0 km by river above Castle Farm · 2025: 4 spills, 37 h
  • Dorridge - Norton Green Lane SPS Not discharging
    Severn Trent Water · into Tributary Of Cuttle Brook · 22.8 km by river above Castle Farm · 2025: 31 spills, 331 h
  • Hampton In Arden - Meriden Road SPS Not discharging
    Severn Trent Water · into Tributary River Blythe · 11.9 km by river above Castle Farm · 2025: 38 spills, 264 h

Near these gauges, connection not known

Within 3 km of one of the Blythe’s gauges in a straight line, but the river map cannot say whether their water reaches it.

  • Coventry Road Storm Overflow Not discharging
    Severn Trent Water · into Trib Of River Blythe · 940 m from Castle Farm in a straight line · its watercourse is not on the river map · 2025: 3 spills, 1.1 h
  • Various CSO's - Solihull/Olton Not discharging
    Severn Trent Water · into River Blythe (Trib) · 2.7 km from Cheswick Green in a straight line · its watercourse is not on the river map · 2025: 10 spills, 20 h

3 other overflows within 3 km of these gauges are placed below the Blythe’s lowest gauge or on another river, so not listed.

A status is the water company’s own monitor: it says whether an overflow is discharging, never how much or why, and a spill does not by itself explain a change in a river level. A status older than two hours is shown as unknown. Annual figures are the official returns: 12/24-hour spills for England and Wales, overflow events for Scotland (Scottish Water counts differently, so the two cannot be compared). “No data” means the monitor produced no usable data that year, not zero. Overflows are placed on OS Open Rivers (edition 2026-04), which leaves out many small channels: an overflow the map cannot place may still drain here. Contains OS data © Crown copyright and database rights 2026. Sewage in Britain’s rivers →

Live status: © Severn Trent Water storm overflow activity data, licensed under CC BY 4.0. Annual figures for England: Environment Agency Event Duration Monitoring return, © Environment Agency copyright and/or database right, Open Government Licence v3.0.

Water samples

Dated samples taken by the Environment Agency, not live readings. Results are published days to months after the sample is taken, and many points are sampled only a few times a year, or have not been sampled for years.

14 sampling points on the River Blythe and the streams that join it above Castle Farm, and below it. 7 have a sample from the last 12 months; 8 have any sample banked. Listed from the source down, grouped by the next gauge each one's water reaches.

Above Castle Farm River Blythe 11 points, 6 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
River Blythe at Castle FarmRiver Blythe0.2 km7 Dec 2023 · 2.8 years agoOxygen 91%Temp 5.4 °CpH 7.88Ammonia 0.098 mg/l
Cuttle Brook/Heron Brook - Temple BalsallCuttle Brook20 kmLast sampled 3 May 2018, before the imported period
River Blythe - Temple BalsallRiver Blythe19 kmLast sampled 16 Mar 2010, before the imported period
River Blythe - Balsall StreetRiver Blythe18 km13 Aug 2026 · 56 days agoOxygen 83.5%Temp 19.9 °CpH 7.83Ammonia below 0.03 mg/l
River Blythe - Ryton EndRiver Blythe16 km13 Aug 2026 · 56 days agoOxygen 169.5%Temp 21.9 °CpH 8.41Ammonia 0.037 mg/l
Eastcote Brook - Hampton Bridgeunnamed stream15 km18 May 2026 · 5 months agoOxygen 92.4%Temp 14.3 °CpH 7.36Ammonia below 0.03 mg/l
River Blythe - Patrick Bridge B4102River Blythe12 km21 Sep 2026 · 17 days agoOxygen 103.3%Temp 16.3 °CpH 7.87Ammonia 0.031 mg/l
Horn Brook - Hampton Lane Hampton in Ardenunnamed stream11 kmLast sampled 13 Nov 2018, before the imported period
Hollywell Pasture BrookHollywell Brook9.2 kmLast sampled 30 Mar 2001, before the imported period
River Blythe - StonebridgeRiver Blythe8.8 kmLast sampled 20 Mar 2018, before the imported period
River Blythe - Packington Ford FootbridgeRiver Blythe6.1 km28 Aug 2026 · 41 days agoOxygen 84.3%Temp 18.8 °CpH 7.76Ammonia 0.091 mg/l
Above Cheswick Green River Blythe 2 points, 1 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
Spring Brook - Spring Brook LaneSpring Brook3.2 kmLast sampled 18 Sep 2007, before the imported period
Spring Brook - EarlswoodSpring Brook2.3 km21 Sep 2026 · 17 days agoOxygen 93.4%Temp 15 °CpH 7.7Ammonia below 0.03 mg/l
Below Castle Farm 1 point
Sampling pointWatercourse (map)Below the gaugeLast sampleLatest results (river water)
River Blythe - Blythe Bridge B4114River Blythe2.0 km11 Sep 2026 · 27 days agoOxygen 78.9%Temp 15.5 °CpH 7.89Ammonia 0.035 mg/l

Distances are along the river to the gauge named. England's samples only.

FloodRadar does not grade these results: there is no overall score, and official river classifications are a separate dataset. A sample taken downstream of an overflow does not by itself show where anything in it came from. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels.

Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.

Contains OS data © Crown copyright and database rights 2026.

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