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Home › Rivers › River Ock

River Ock water levels

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

3stations
0above typical high

Gauges

Monitoring stations, source to mouth

StationTownLevel nowStatusTrend
Stanford ValeStanford In The Vale0.13 mASD 24m agoNormal—
4.7 km by river
Charney BassettCharney Bassett0.68 mASD 24m agoNormal▲
14.2 km by river
AbingdonstructureAbingdon0.11 mASD 24m 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 Ock above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.

1 gauged tributary, 1 gauge

Letcombe Brook

Joins the Ock between Charney Bassett and Abingdon, no more than 15.8 km by river above Abingdon.

Wantage0.48 mASD 24m agoNormal

Its water passes Abingdon and every gauge below it on the Ock. It does not pass Charney Bassett or the gauges above it.

Where the Ock goes

Below Abingdon, its water next reaches Culham Lock, a gauge on River Thames, 5.6 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 Ock 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 Abingdon, the Ock’s lowest gauge on the river map: on the Ock 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 Abingdon: 98 spills over 989 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 Ock includes the smaller streams that join it there.

Above Stanford Vale, the Ock’s highest gauge1 overflow
  • Uffington Not discharging
    Thames Water · into Uffington Brook · 7.4 km by river above Stanford Vale · 2025: 48 spills, 654 h
Between Stanford Vale and Charney Bassett1 overflow
  • Stanford In The Vale STW Not discharging
    Thames Water · into The River Ock · 4.5 km by river above Charney Bassett · 2025: 3 spills, 6.3 h
Between Charney Bassett and Abingdon2 overflows
  • Wantage (Storm) Not discharging
    Thames Water · into Letcombe Brook · 11.3 km by river above Abingdon · 2025: 30 spills, 170 h
  • Appleton Wastewater Treatment Works Not discharging
    Thames Water · into Marcham Brook · 10.6 km by river above Abingdon · 2025: 17 spills, 159 h

Near these gauges, connection not known

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

  • Abingdon Sewage Treatment Works Not discharging
    Thames Water · into Odhay Hill Ditch/River Thames · 2.0 km from Abingdon in a straight line · no mapped watercourse close enough to be sure · 2025: 13 spills, 112 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: © Thames 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.

18 sampling points on the River Ock and the streams that join it above Abingdon, and below it. 13 have a sample from the last 12 months; 14 have any sample banked. Listed from the source down, grouped by the next gauge each one's water reaches.

Above Stanford Vale River Ock 3 points
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
Uffington AllotmentsUffington Brook7.6 km26 Aug 2026 · 43 days agoOxygen 88.3%Temp 16.9 °CpH 8.09Ammonia below 0.03 mg/l
Uffington Brook at Moor Mill Farm, UffingtonUffington Brook6.0 km26 Aug 2026 · 43 days agoOxygen 104.4%Temp 18.5 °CpH 8.19Ammonia 2.4 mg/l
Ock at Stanford in the Vale Road Bridge, Stanford in the ValeRiver Ock0.1 km21 Aug 2026 · 48 days agoOxygen 71.3%Temp 15.6 °CpH 7.95Ammonia below 0.03 mg/l
Above Wantage Letcombe Brook 1 point, 0 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
Letcombe Brook at Locks Lane, WantageLetcombe Brook0.3 kmLast sampled 21 May 2007, before the imported period
Above Charney Bassett River Ock 1 point, 0 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
Ock upstream of Stutfield Brook tributaryRiver Ock2.3 kmLast sampled 9 Mar 2022, before the imported period
Above Abingdon River Ock 12 points, 10 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
Woodhill Brook above Childrey BrookWoodhill Brook16 kmLast sampled 16 Mar 2020, before the imported period
Bagpuize Brook at Swannybrookunnamed stream12 km9 Sep 2026 · 29 days agoOxygen 72.5%Temp 16.2 °CpH 7.48Ammonia 0.06 mg/l
Ock at Ock Bridge, LyfordRiver Ock11 kmLast sampled 15 Mar 2010, before the imported period
Letcombe Brook just above Wantage sewage treatment worksLetcombe Brook11 km9 Sep 2026 · 29 days agoOxygen 101.3%Temp 14.1 °CpH 8.35Ammonia below 0.03 mg/l
Downstream of Ock Bridge, LyfordRiver Ock11 km23 Nov 2023 · 2.9 years agoOxygen 87.2%Temp 9.7 °CpH 7.93Ammonia below 0.03 mg/l
M downstream of Wantage sewage treatment worksLetcombe Brook11 km24 Aug 2026 · 45 days agoOxygen 86.9%Temp 17.1 °CpH 8Ammonia 0.51 mg/l
Letcombe Brook at Weir Farm, East HanneyLetcombe Brook10 km24 Aug 2026 · 45 days agoOxygen 92.4%Temp 16.1 °CpH 8.03Ammonia 0.32 mg/l
Marcham Brook at Fyfieldunnamed stream8.7 km13 Mar 2026 · 7 months agoOxygen 83.6%Temp 8.3 °CpH 7.89Ammonia 0.062 mg/l
200 m upstream of Childrey BrookHanney Ditch6.2 km18 Sep 2026 · 20 days agoOxygen 47.1% Jun 2026Temp 17.6 °C Jun 2026pH 7.52 Jun 2026Ammonia 0.096 mg/l Jun 2026
Marcham Brook at Mill Road, MarchamMarcham Brook3.9 km1 Oct 2026 · 7 days agoOxygen 84.2%Temp 14.7 °CpH 8.15Ammonia below 0.03 mg/l
Childrey Brook at Mill Road MarchamChildrey Brook3.2 km1 Sep 2026 · 37 days agoOxygen 85.4%Temp 15.8 °CpH 7.91Ammonia below 0.03 mg/l
Sandford Brook at A415, MarchamSandford Brook2.7 km1 Oct 2026 · 7 days agoOxygen 88.5%Temp 14.2 °CpH 8.3Ammonia below 0.03 mg/l
Below Abingdon 1 point
Sampling pointWatercourse (map)Below the gaugeLast sampleLatest results (river water)
Ock above ThamesRiver Ock1.8 km1 Sep 2026 · 37 days agoOxygen 88.3%Temp 15.5 °CpH 7.9Ammonia below 0.03 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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