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Home › Rivers › River Tas

River Tas water levels

Live levels from 1 monitoring station across Norfolk, updated every 15 minutes.

1stations
0above typical high

Gauges

Monitoring stations, source to mouth

StationTownLevel nowStatusTrend
Shotesham—0.16 mASD 1h agoLow—

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 Tas above one of its gauges, from the source down. The river map knows where gauges are, not every stream, so a tributary without a gauge is not listed here.

No gauged tributary joins the Tas above Shotesham on the river map. Streams without a gauge are not counted here.

Where the Tas goes

Below Shotesham, its water next reaches Brundall, a gauge on River Yare, 23.5 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.

Storm overflows upstream

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

  • 0 report discharging now
  • 3 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 Shotesham: 20 spills over 126 hours in total, across all 3.

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 Tas includes the smaller streams that join it there.

Above Shotesham, the Tas’s highest gauge3 overflows
  • Long Stratton Wrc Not discharging
    Anglian Water · into Tributary River Tas Nt · 8.4 km by river above Shotesham · 2025: 12 spills, 121 h
  • Saxlingham STW Not discharging
    Anglian Water · into Tributary River Tas · 2.3 km by river above Shotesham · 2025: 6 spills, 1.8 h
  • Newton Flotman-Maids Head TPS Not discharging
    Anglian Water · into River Tas · 2.3 km by river above Shotesham · 2025: 2 spills, 3.0 h

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: © Anglian 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.

8 sampling points on the River Tas and the streams that join it above Shotesham, and below it. 3 have a sample from the last 12 months; 5 have any sample banked. Listed from the source down, grouped by the next gauge each one's water reaches.

Above Shotesham River Tas 7 points, 5 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
River Tas Old Hall BridgeRiver Tas17 km30 Jun 2026 · 3 months agoOxygen 35.3%Temp 18.2 °CpH 7.58Ammonia 0.19 mg/l
River Tas near Old Hall BridgeRiver Tas17 km30 Jul 2026 · 2 months agoOxygen 32.4%Temp 18.6 °CpH 7.61Ammonia 0.085 mg/l
River Tas Brook Hall FordRiver Tas14 kmLast sampled 12 Mar 2020, before the imported period
River Tas at Forncett St MaryRiver Tas11 km6 Aug 2025 · 14 months agoOxygen 75.5%Temp 14 °CpH 7.84Ammonia 0.032 mg/l
Watercourse downstream of Long Stratton sewage treatment worksunnamed stream7.8 km15 Mar 2024 · 2.6 years agoOxygen 105.5%Temp 11.8 °CpH 8.07Ammonia below 0.03 mg/l
Flordon Beck Bridge at Flordon Commonunnamed stream6.7 km28 Aug 2026 · 41 days agoOxygen 90.9%Temp 16.3 °CpH 7.85 Mar 2024Ammonia below 0.03 mg/l
River Tas Flordon BridgeRiver Tas4.5 kmLast sampled 6 Mar 2020, before the imported period
Below Shotesham 1 point, 0 with samples
Sampling pointWatercourse (map)Below the gaugeLast sampleLatest results (river water)
River Tas Markshall BridgeRiver Tas6.7 kmLast sampled 2 Mar 2020, before the imported period

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.

Wave tracker for this river → Norfolk rivers → All UK rivers