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Live levels from 5 monitoring stations across Essex, Greater London, updated every 15 minutes.
| Station | Level now | Status | ||
|---|---|---|---|---|
| High Ongar | 0.05 mASD 25m ago | Normal | ||
| 10.4 km by river | ||||
| Shonks Mill Bridge | -0.02 mASD 25m ago | Low | ||
| 9.5 km by river | ||||
| Abridge | 0.96 mASD 25m ago | Normal | ||
| 3.8 km by river | ||||
| Loughton | 0.03 mASD 25m ago | Normal | ||
| 10.5 km by river | ||||
| Redbridge | 0.11 mASD 16h ago | old reading | ||
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.
Streams and rivers with a gauge whose water joins the Roding above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.
Joins the Roding between High Ongar and Shonks Mill Bridge, no more than 10.6 km by river above Shonks Mill Bridge.
| Moreton | 0.17 mASD 25m ago | Normal |
| 5.8 km by river | ||
| Chipping Ongarstructure | 0.10 mASD 25m ago | Normal |
Its water passes Shonks Mill Bridge and every gauge below it on the Roding. It does not pass High Ongar or the gauges above it.
No gauge below Redbridge 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.
37 storm overflows are traced upstream of Redbridge, the Roding’s lowest gauge on the river map: on the Roding itself, on its gauged tributaries, and on smaller streams that join above there.
Official figures for 2025, for the overflows traced upstream of Redbridge: 573 spills over 3,999 hours in total, across all 37.
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 Roding includes the smaller streams that join it there. Where a stretch or a tributary has more than 4, the 3 discharging now or nearest its gauge are listed, the rest are counted, and every one is in that gauge’s “Upstream of here” list. Show every overflow in every stretch →
and 2 more: show all 5 overflows on this stretch → All above Chipping Ongar, nearest first →
and 24 more: show all 27 overflows on this stretch → All above Redbridge, nearest first →
Within 3 km of one of the Roding’s gauges in a straight line, but the river map cannot say whether their water reaches it.
1 other overflow within 3 km of these gauges is placed below the Roding’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: © 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.
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.
10 sampling points on the River Roding and the streams that join it above Redbridge. 9 have a sample from the last 12 months; 10 have any sample banked. Listed from the source down, grouped by the next gauge each one's water reaches.
| Sampling point | Watercourse (map) | Above the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| Cripsey Brook at Delved Bridge | Cripsey Brook | 5.2 km | 3 Sep 2026 · 35 days ago | Oxygen 83.4%Temp 17.2 °CpH 7.93Ammonia 1.1 mg/l |
| Sampling point | Watercourse (map) | Above the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| Cripsey Brook at Moreton Bridge | Cripsey Brook | 5.9 km | 12 Aug 2026 · 57 days ago | Oxygen 80.7%Temp 17.1 °CpH 7.91Ammonia below 0.03 mg/l |
| Sampling point | Watercourse (map) | Above the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| Herons Farm - Roding | unnamed stream | 1.6 km | 10 Dec 2024 · 22 months ago | Oxygen 88.7%Temp 6.9 °CpH 8.01Ammonia below 0.03 mg/l |
| Sampling point | Watercourse (map) | Above the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| Roding at High Ongar Bridge | River Roding | 10 km | 12 Aug 2026 · 57 days ago | Oxygen 37.2%Temp 16.9 °CpH 7.54Ammonia 0.085 mg/l |
| Cripsey Brook at Ongar Bridge | Cripsey Brook | 9.6 km | 12 Aug 2026 · 57 days ago | Oxygen 65.1%Temp 17.2 °CpH 7.83Ammonia below 0.03 mg/l |
| Sampling point | Watercourse (map) | Above the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| Roding at Passingford Bridge | River Roding | 5.4 km | 11 Aug 2026 · 58 days ago | Oxygen 29.5%Temp 16.7 °CpH 7.28Ammonia 0.065 mg/l |
| Arnolds Farm | River Roding | 3.5 km | 14 Aug 2026 · 55 days ago | Oxygen 50.6%Temp 17.7 °CpH 7.9Ammonia below 0.03 mg/l |
| Brookhouse Brook at Brookhouse | Brookhouse Brook | 2.3 km | 3 Sep 2026 · 35 days ago | Oxygen 74.5%Temp 18.5 °CpH 7.72Ammonia 0.15 mg/l |
| Sampling point | Watercourse (map) | Above the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| Roding at Abridge | River Roding | 3.8 km | 11 Aug 2026 · 58 days ago | Oxygen 57% Jul 2026Temp 18.7 °C Jul 2026pH 7.54 Jul 2026Ammonia below 0.03 mg/l Jul 2026 |
| Sampling point | Watercourse (map) | Above the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| Roding at Woodford Bridge | River Roding | 3.8 km | 27 Jul 2026 · 2 months ago | Oxygen 64.9%Temp 18.5 °CpH 7.71Ammonia 0.043 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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