FloodRadar
Log inCreate free account
Live levels from 1 monitoring station across Bath and North East Somerset, updated every 15 minutes.
| Station | Level now | Status |
|---|---|---|
| Compton Dando | 0.46 mASD 32m ago | Low |
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 Chew 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 Chew above Compton Dando, its highest gauge, no more than 14.7 km by river above Compton Dando.
| Chew Stoke | 0.02 mASD 32m ago | Low |
Its water passes every gauge on the Chew, from Compton Dando down.
Joins the Chew above Compton Dando, its highest gauge, no more than 12.8 km by river above Compton Dando.
| Chew Magna Level | 0.16 mASD 32m ago | Normal |
Its water passes every gauge on the Chew, from Compton Dando down.
Below Compton Dando, its water next reaches BRISTOL NETHAM LOCK, a gauge on River Avon, 14.6 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.
6 storm overflows are traced upstream of Compton Dando, the Chew’s lowest gauge on the river map: on the Chew itself, on its gauged tributaries, and on smaller streams that join above there.
Official figures for 2025, for the overflows traced upstream of Compton Dando: 243 spills over 2,828 hours in total, across all 6.
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 Chew includes the smaller streams that join it there.
Within 3 km of one of the Chew’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 Chew’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: © Wessex 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.
14 sampling points on the River Chew and the streams that join it above Compton Dando, and below it. 2 have a sample from the last 12 months; 9 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) |
|---|---|---|---|---|
| Walnut Tree Farm Campground - Chew Stoke Brook | unnamed stream | 3.4 km | 6 Dec 2024 · 22 months ago | Oxygen 94.5%Temp 9.2 °CpH 8.03Ammonia below 0.03 mg/l Nov 2024 |
| Sampling point | Watercourse (map) | Above the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| Chew Stoke Stream | Babylon Brook | 15 km | 8 May 2026 · 5 months ago | Oxygen 90.2%Temp 12.2 °CpH 7.79Ammonia below 0.03 mg/l |
| Chew downstream of Reservoir | River Chew | 14 km | Last sampled 6 Dec 2010, before the imported period | |
| Chew downstream of Compensation Flow | River Chew | 13 km | 12 Mar 2024 · 2.6 years ago | Oxygen 101.7%Temp 8.5 °CpH 8.45Ammonia below 0.03 mg/l |
| Chew Magna | River Chew | 12 km | 6 Dec 2024 · 22 months ago | Oxygen 82.5%Temp 8.8 °CpH 7.75Ammonia 0.11 mg/l Nov 2024 |
| Winford Brook at the Batch | Winford Brook | 12 km | Last sampled 18 Apr 2017, before the imported period | |
| Chew Tun Bridge | River Chew | 11 km | Last sampled 7 Mar 2023, before the imported period | |
| Winford Brook Chew Mag | Winford Brook | 11 km | Last sampled 23 Oct 2007, before the imported period | |
| Chew Stanton Drew | River Chew | 9.0 km | 12 Mar 2024 · 2.6 years ago | Oxygen 100.6%Temp 9.2 °CpH 8.2Ammonia 0.2 mg/l |
| Salters Brook | Salter's Brook | 5.8 km | 12 Mar 2024 · 2.6 years ago | Oxygen 99.6%Temp 9.7 °CpH 8.17Ammonia 0.11 mg/l |
| Publow | unnamed stream | 4.9 km | 6 Dec 2024 · 22 months ago | Oxygen 95.9%Temp 9.2 °CpH 8.1Ammonia below 0.03 mg/l Nov 2024 |
| Chew Publow | River Chew | 4.6 km | 12 Mar 2024 · 2.6 years ago | Oxygen 99.5%Temp 9 °CpH 8.11Ammonia 0.17 mg/l |
| Sampling point | Watercourse (map) | Below the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| Chew Keynsham M | River Chew | 4.8 km | 12 May 2026 · 5 months ago | Oxygen 97.9%Temp 11 °CpH 8.23Ammonia 0.036 mg/l |
| Chew upstream of Lake Gen | River Chew | 5.5 km | Last sampled 22 Aug 2003, 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.
FloodRadar helper · beta