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Home › Rivers › River Little Ouse

River Little Ouse water levels

Live levels from 3 monitoring stations across Norfolk, updated every 15 minutes.

3stations
0above typical high

Gauges

Monitoring stations, source to mouth

StationTownLevel nowStatusTrend
KnettishallKnettishall0.07 mASD 33m agoNormal—
18.0 km by river
Abbey HeathAbbey Heath0.09 m 33m agoLow—
16.7 km by river
Little OuseLakenheath1.64 mASD 33m 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 Little Ouse 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.

1 gauged tributary, 4 gauges

River Thet

Joins the Little Ouse between Knettishall and Abbey Heath, no more than 4.5 km by river above Abbey Heath.

Redbridge0.05 mASD 33m agoLow
12.3 km by river
Bridgham0.08 mASD 33m agoLow
11.5 km by river
Melford0.09 mASD 33m agoLow

Its water passes Abbey Heath and every gauge below it on the Little Ouse. It does not pass Knettishall or the gauges above it.

Gauged streams joining the Thet

  • River Wittle: joins the Thet above Bridgham (its lowest gauge is 10.2 km by river above it). Gauge, source first: Quidenham Normal.

Where the Little Ouse goes

Below Little Ouse, its water next reaches Freebridge, a gauge on River Great Ouse, 45.7 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

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

  • 0 report discharging now
  • 10 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 Little Ouse: 51 spills over 419 hours in total, across all 10.

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 Little Ouse includes the smaller streams that join it there.

Between Knettishall and Abbey Heath5 overflows
  • Walsham Le Willows TPS Not discharging
    Anglian Water · into Stowlangtoft Stream · 37.6 km by river above Abbey Heath · 2025: 6 spills, 25 h · placed on the river by its position alone
  • Elmswell Water Recycling Centre Not discharging
    Anglian Water · into River Sapiston · 36.8 km by river above Abbey Heath · 2025: 38 spills, 375 h · placed on the river by its position alone
  • Thetford - Hayling Path PS Not discharging
    Anglian Water · into River Little Ouse · 2.6 km by river above Abbey Heath · 2025: 1 spill, 0.3 h
  • Thetford STW Not discharging
    Anglian Water · into River Little Ouse · 1.3 km by river above Abbey Heath · 2025: 0 spills, 0 h
  • Thetford STW Not discharging
    Anglian Water · into River Little Ouse · 1.3 km by river above Abbey Heath · 2025: 0 spills, 0 h
River Thet, above Redbridgejoins the Little Ouse above Abbey Heath4 overflows
  • Attleborough Not discharging
    Anglian Water · into Upper River Crouch · 8.8 km by river above Redbridge · 2025: 0 spills, 0 h · placed on the river by its position alone
  • Attleborough Norwich Road PS Not discharging
    Anglian Water · into Culverted Tributary R Thet · 8.8 km by river above Redbridge · 2025: 1 spill, 0.3 h
  • Carvers La Terminal SPS Not discharging
    Anglian Water · into Tributary River Thet · 7.0 km by river above Redbridge · 2025: 2 spills, 3.5 h
  • Attleborough Wrc Not discharging
    Anglian Water · into Tributary River Thet · 5.6 km by river above Redbridge · 2025: 0 spills, 0 h
Between Abbey Heath and Little Ouse1 overflow
  • Brandon Wrc Not discharging
    Anglian Water · into River Little Ouse · 5.0 km by river above Little Ouse · 2025: 3 spills, 15 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.

20 sampling points on the River Little Ouse and the streams that join it above Little Ouse. 7 have a sample from the last 12 months; 13 have any sample banked. Listed from the source down, grouped by the next gauge each one's water reaches.

Above Redbridge River Thet 4 points
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
Common Farm Field Cornerunnamed stream14 km26 Jun 2025 · 15 months agoOxygen 127.4%Temp 20.1 °CpH 8.5Ammonia 0.11 mg/l
River Thet Crowshall Road Bridge AttleboroughRiver Thet6.5 km28 May 2026 · 4 months agoOxygen 55.8%Temp 18 °CpH 7.77Ammonia 0.12 mg/l
River Thet Westcar Road Bridge AttleboroughRiver Thet4.8 km8 Sep 2026 · 30 days agoOxygen 57%Temp 16.7 °CpH 7.39Ammonia 0.78 mg/l
River Thet Red Bridge ShrophamRiver Thet0.1 km3 Mar 2025 · 19 months agoOxygen 96%Temp 5.5 °CpH 8.09Ammonia 0.074 mg/l
Above Knettishall River Little Ouse 5 points, 2 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
Little Ouse River Footbridge near Poultry LagoonLittle Ouse River9.7 kmLast sampled 7 Oct 2009, before the imported period
Tributary of Little Ouse Church Lane Road Bridge Thelnethamunnamed stream9.5 km17 Sep 2026 · 21 days agoOxygen 51.8% Jun 2026Temp 17.6 °C Jun 2026pH 7.61 Jun 2026Ammonia 0.21 mg/l Jun 2026
Little Ouse River Thelnetham FenLittle Ouse River8.5 kmLast sampled 7 Oct 2009, before the imported period
Weston Fen Brook Footbridge near Fen Streetunnamed stream6.3 kmLast sampled 25 Nov 2005, before the imported period
Little Ouse River Knettishall Heath Road BridgeLittle Ouse River0.1 km8 Sep 2026 · 30 days agoOxygen 72.5%Temp 15 °CpH 7.94Ammonia below 0.03 mg/l
Above Bridgham River Thet 3 points, 1 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
River Thet Ford at South EndRiver Thet9.6 kmLast sampled 21 May 2014, before the imported period
Upstream Broom PlantationRiver Wittle8.4 kmLast sampled 2 Dec 2022, before the imported period
River Whittle East Harling CommonRiver Wittle7.3 km14 Aug 2026 · 55 days agoOxygen 83.5%Temp 22.4 °CpH 7.68Ammonia 0.081 mg/l
Above Melford River Thet 1 point
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
River Thet Bridgham Track BridgeRiver Thet12 km8 Sep 2026 · 30 days agoOxygen 64.4%Temp 15.4 °CpH 7.77Ammonia below 0.03 mg/l
Above Abbey Heath River Little Ouse 5 points, 4 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
Stowlangtoft Stream at Walsham-le-Willowsunnamed stream37 km17 Sep 2026 · 21 days agoOxygen 31.6% May 2026Temp 15.8 °C May 2026pH 7.48 May 2026Conductivity 908 µS/cm May 2026
Stowlangtoft Stream Brook Farm Ixworth Roadunnamed stream37 km5 Mar 2025 · 19 months agoOxygen 101.4%Temp 4.8 °CpH 8.32Ammonia 0.32 mg/l
Packenham Stream Nether Hall Road Bridgeunnamed stream31 kmLast sampled 13 Feb 2008, before the imported period
Pollarded Wallnut Friary HouseRiver Thet3.8 km9 Sep 2024 · 2.1 years agoOxygen 62.4%Temp 16.5 °CpH 7.64Ammonia below 0.03 mg/l
River Thet Nun's Road Bridge ThetfordRiver Thet3.5 km7 Mar 2025 · 19 months agoOxygen 96.3%Temp 8.8 °CpH 8Ammonia below 0.03 mg/l
Above Little Ouse River Little Ouse 2 points, 1 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
Little Ouse River Santon Downham Road BridgeLittle Ouse River10 km17 Mar 2025 · 19 months agoOxygen 92.7%Temp 7 °CpH 7.98Ammonia 0.08 mg/l
Downstream of Brandon StaunchLittle Ouse River5.2 kmLast sampled 14 Dec 2022, 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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