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Live levels from 1 monitoring station across Gloucestershire, updated every 15 minutes.
| Station | Level now | Status |
|---|---|---|
| Tewkesbury Tredington | 0.58 mASD 1h ago | Normal |
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 Swilgate 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 Swilgate above Tewkesbury Tredington, its highest gauge, no more than 8.6 km by river above Tewkesbury Tredington.
| Prestbury Road | 0.02 mASD 1h ago | Normal |
| 2.3 km by river | ||
| Windyridge Road | 0.69 mASD 1h ago | Normal |
Its water passes every gauge on the Swilgate, from Tewkesbury Tredington down.
Below Tewkesbury Tredington, its water next reaches Deerhurst, a gauge on River Severn, 7.8 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.
4 storm overflows are traced upstream of Tewkesbury Tredington, the Swilgate’s lowest gauge on the river map: on the Swilgate itself, on its gauged tributaries, and on smaller streams that join above there.
Official figures for 2025, for the overflows traced upstream of Tewkesbury Tredington: 65 spills over 681 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 Swilgate includes the smaller streams that join it there.
2 other overflows within 3 km of these gauges are placed below the Swilgate’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: © Severn Trent 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 Swilgate and the streams that join it above Tewkesbury Tredington, and below it. 3 have a sample from the last 12 months; 4 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) |
|---|---|---|---|---|
| Wyman's Brook, Mandarin Way | Wyman's Brook | 8.4 km | 1 Dec 2023 · 2.9 years ago | Oxygen 57.9%Temp 5.2 °CpH 7.63Ammonia 1.2 mg/l |
| Hyde Brook upstream of Brockhampton sewage treatment works | Hyde Brook | 8.3 km | Last sampled 1 Dec 2021, before the imported period | |
| Swilgate River Swindon | River Swilgate | 7.5 km | 7 May 2026 · 5 months ago | Oxygen 62.5%Temp 13.1 °CpH 7.66Ammonia 1.3 mg/l |
| Hyde Brook at Brockhampton | Hyde Brook | 7.3 km | 12 Dec 2025 · 10 months ago | Oxygen 91.4%Temp 11.8 °CpH 7.37Ammonia below 0.03 mg/l |
| Hyde Brook downstream of Brockhampton sewage treatment works | Hyde Brook | 6.9 km | Last sampled 3 Nov 2014, before the imported period | |
| River Swilgate upstream of Hyde Brook | River Swilgate | 5.2 km | Last sampled 9 Mar 2007, before the imported period | |
| Hyde Brook upstream of Stoke Orchard sewage treatment works | Hyde Brook | 5.1 km | Last sampled 1 Dec 2021, before the imported period | |
| Hyde Brook Stoke Orchard confluence Swilgate | Hyde Brook | 4.8 km | Last sampled 6 Aug 2021, before the imported period | |
| Swilgate River downstream of Hyde Brook Stoke Orchard | River Swilgate | 3.1 km | Last sampled 26 Mar 2010, before the imported period |
| Sampling point | Watercourse (map) | Below the gauge | Last sample | Latest results (river water) |
|---|---|---|---|---|
| Swilgate River Tewkesbury | River Swilgate | 3.9 km | 29 May 2026 · 4 months ago | Oxygen 122.4% Apr 2026Temp 20.2 °CpH 8.34Ammonia 0.069 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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