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Home › Rivers › River Brett

River Brett water levels

Live levels from 2 monitoring stations across Suffolk, updated every 15 minutes.

2stations
0above typical high

Gauges

Monitoring stations, source to mouth

StationTownLevel nowStatusTrend
CockfieldCockfield0.02 m 1h agoNormal—
24.8 km by river
HadleighHadleigh0.31 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 Brett 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 Brett above Hadleigh on the river map. Streams without a gauge are not counted here.

Where the Brett goes

No gauge below Hadleigh is known on the river map.

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 Brett 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 Hadleigh, the Brett’s lowest gauge on the river map: on the Brett 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 Hadleigh: 15 spills over 43 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 Brett includes the smaller streams that join it there.

Between Cockfield and Hadleigh4 overflows
  • Lavenham STW Inlet Pumping Station Not discharging
    Anglian Water · into Lavenham Brook · 19.6 km by river above Hadleigh · 2025: 2 spills, 10 h · placed on the river by its position alone
  • Lavenham Water Recycling Centre Not discharging
    Anglian Water · into Lavenham Brook River Brett Nt · 19.6 km by river above Hadleigh · 2025: 9 spills, 32 h · placed on the river by its position alone
  • Monks Eleigh Wrc Not discharging
    Anglian Water · into Trib Of The River Brett & Gw · 12.0 km by river above Hadleigh · 2025: 4 spills, 0.7 h
  • Chelsworth Cakebridge Lane PS Not discharging
    Anglian Water · into River Brett · 11.7 km by river above Hadleigh · 2025: 0 spills, 0 h

2 other overflows within 3 km of these gauges are placed below the Brett’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: © 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.

16 sampling points on the River Brett and the streams that join it above Hadleigh, 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 Cockfield River Brett 1 point, 0 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
Lavenham Brook near Cockfield Hallunnamed stream3.1 kmLast sampled 11 Jul 2012, before the imported period
Above Hadleigh River Brett 10 points, 5 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
Lavenham Brook Lower Road Fordunnamed stream21 kmLast sampled 11 Oct 2004, before the imported period
Lavenham Brook A1141 downstream of Bridge Farmunnamed stream18 km10 Sep 2026 · 28 days agoOxygen 79.2%Temp 12.7 °CpH 7.78Ammonia below 0.03 mg/l
Lavenham Brook Preston Road Bridge B. Eleighunnamed stream17 kmLast sampled 2 Sep 2014, before the imported period
Tributary of Old River BrettRiver Brett14 km2 Dec 2025 · 10 months agoOxygen 85%Temp 8.9 °CpH 8.01Ammonia below 0.03 mg/l
Bildeston Brook Bildeston BridgeBildeston Brook11 km3 Sep 2026 · 35 days agoOxygen 93%Temp 17.7 °CpH 8.24Ammonia below 0.03 mg/l
Bildeston Brook upstream of Nedging MillBildeston Brook10 km3 Sep 2026 · 35 days agoOxygen 29.9%Temp 17.7 °CpH 7.52Ammonia 0.12 mg/l
River Brett B1115 Bridge SemerRiver Brett7.7 kmLast sampled 27 Apr 2017, before the imported period
River Brett Cosford BridgeRiver Brett3.2 kmLast sampled 20 Dec 2004, before the imported period
Kersey Brook Kersey MillKersey Brook2.9 kmLast sampled 14 Feb 2017, before the imported period
Tributary of River Brett Cosford Road Bridge Hadleighunnamed stream2.2 km6 Dec 2023 · 2.8 years agoOxygen 96.2%Temp 4.9 °CpH 8.37Ammonia below 0.03 mg/l
Below Hadleigh 5 points, 3 with samples
Sampling pointWatercourse (map)Below the gaugeLast sampleLatest results (river water)
River Brett Toppesfield Bridge HadleighRiver Brett1.0 km10 Sep 2026 · 28 days agoOxygen 37.1%Temp 14.5 °CpH 7.56Ammonia 0.053 mg/l
River Brett Layham MillRiver Brett3.7 km17 Sep 2026 · 21 days agoOxygen 37%Temp 15.7 °CpH 7.79Ammonia 0.048 mg/l
River Brett Shelley BridgeRiver Brett6.7 km10 Sep 2026 · 28 days agoOxygen 71.3%Temp 14.6 °CpH 7.84Ammonia below 0.03 mg/l
River Brett downstream of ShelleyRiver Brett7.5 kmLast sampled 29 Sep 2023, before the imported period
River Brett Higham BridgeRiver Brett11 kmLast sampled 3 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.

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