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.
Streams and rivers with a gauge whose water joins the Tern above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.
Named streams on the river map that flow into the Tern 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.
15 storm overflows are traced upstream of Walcot, the Tern’s lowest gauge on the river map: on the Tern itself, on its gauged tributaries, and on smaller streams that join above there.
0 report discharging now
14 not discharging
1 offline or silent: 0 monitor offline, 0 status unknown, 1 no live feed
Official figures for 2025, for the overflows traced upstream of Walcot: 402 spills over 1,126 hours in total, across the 14 that have a figure. 1 had no usable monitor data that year.
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 Tern includes the smaller streams that join it there.
Above Ternhill, the Tern’s highest gauge1 overflow
Market Drayton STWNot discharging Severn Trent Water · into River Tern · 7.5 km by river above Ternhill · 2025: 23 spills, 18 h
Between Ternhill and Walcot8 overflows
Tibberton - Greenhouses SPSNot discharging Severn Trent Water · into River Meese · 17.9 km by river above Walcot · 2025: 21 spills, 45 h
TbcNot discharging Severn Trent Water · into Hurley Brook · 14.2 km by river above Walcot · 2025: 0 spills, 0 h
Great Bolas (CSO)Not discharging Severn Trent Water · into Trib Of River Tern · 13.8 km by river above Walcot · 2025: 50 spills, 209 h
Forest Glen (SSO)Not discharging Severn Trent Water · into Trib Of Beanhill Brook · 13.2 km by river above Walcot · 2025: 0 spills, 0 h · placed on the river by its position alone
Wellington - Gas Works CSONot discharging Severn Trent Water · into Tributary Of River Tern · 9.9 km by river above Walcot · 2025: 0 spills, 0 h
Wellington - Morrisons CSONot discharging Severn Trent Water · into Tributary Of River Tern · 9.9 km by river above Walcot · 2025: 13 spills, 32 h
Rushmoor STWNot discharging Severn Trent Water · into River Tern · 2.8 km by river above Walcot · 2025: 18 spills, 164 h
Rushmoor STWNot discharging Severn Trent Water · into River Tern · 2.8 km by river above Walcot · 2025: 9 spills, 22 h
River Meese, above Tibbertonjoins the Tern above Walcot1 overflow
Forton Sewage Treatment WorksNo live feed Severn Trent Water · into River Meese · 13.8 km by river above Tibberton · 2025: no data
River Roden, above Rodingtonjoins the Tern above Walcot4 overflows
Mill Street CSONot discharging Severn Trent Water · into Trib Of Sidleymoor Brook · 30.8 km by river above Rodington · 2025: 151 spills, 325 h
Wellgate Combined Sewer OverflowNot discharging Severn Trent Water · into River Roden · 29.3 km by river above Rodington · 2025: 30 spills, 57 h
Wem Aston Road STWNot discharging Severn Trent Water · into River Roden · 29.2 km by river above Rodington · 2025: 13 spills, 116 h
Roden STWNot discharging Severn Trent Water · into River Roden · 4.9 km by river above Rodington · 2025: 19 spills, 39 h
River Strine, above Crudgingtonjoins the Tern above Walcot1 overflow
A518 Honnington CSONot discharging Severn Trent Water · into Tri Of River Strine · 10.3 km by river above Crudgington · 2025: 55 spills, 98 h · placed on the river by its position alone
Near these gauges, connection not known
Within 3 km of one of the Tern’s gauges in a straight line, but the river map cannot say whether their water reaches it.
Somerwood - Sunningdale (CSO)Not discharging Severn Trent Water · into Tributary Of The River Tern · 3.0 km from Walcot in a straight line · its watercourse is not on the river map · 2025: 7 spills, 30 h
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.
72 sampling points on the River Tern and the streams that join it above Walcot, and below it. 27 have a sample from the last 12 months; 30 have any sample banked.
Sampled most recently, anywhere on the Tern and its streams:
River Roden at RodingtonRiver Roden · 0.1 km above RodingtonLast sampled 22 Sep 2026 · 16 days agoOxygen 89.3% Apr 2026Temp 11.6 °C Apr 2026pH 8.01 Apr 2026Ammonia 0.057 mg/l Apr 2026
River Tern at WalcotRiver Tern · 0.3 km above WalcotLast sampled 22 Sep 2026 · 16 days agoE. coli 980 per 100 ml
River Tern East Arm Attingham HallRiver Tern · 5.7 km below the lowest gaugeLast sampled 22 Sep 2026 · 16 days agoOxygen 84% Jun 2026Temp 17.3 °C Jun 2026pH 7.82 Jun 2026Ammonia 0.047 mg/l Jun 2026
Where, from the source down
Sampling points
Newest sample
River Meese and its streamsjoins the Tern above Walcot
England's samples only. Each count opens the list of those points, nearest first, with the date of each one’s latest sample (the gauge’s “Upstream of here” list).
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.