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Live levels from 1 monitoring station across Cambridgeshire, updated every 15 minutes.
| Station | Level now | Status |
|---|---|---|
| Welches Dam | 0.81 mAOD 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 Counter Drain 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.
No gauged tributary joins Counter Drain above Welches Dam on the river map. Streams without a gauge are not counted here.
Below Welches Dam, its water next reaches Magdalen Bridge, a gauge on River Great Ouse, 30.1 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 Welches Dam, Counter Drain’s lowest gauge on the river map: on Counter Drain itself, on its gauged tributaries, and on smaller streams that join above there.
Official figures for 2025, for the overflows traced upstream of Welches Dam: 198 spills over 1,974 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 Counter Drain includes the smaller streams that join it there.
Within 3 km of one of Counter Drain’s gauges in a straight line, but the river map cannot say whether their water reaches it.
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.
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.
11 sampling points on the Counter Drain and the streams that join it above Welches Dam. 4 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) |
|---|---|---|---|---|
| Bury Brook Kings Ripton Road Bridge | Bury Brook | 34 km | 1 Oct 2026 · 7 days ago | Oxygen 32% Sep 2026Temp 13.3 °C Sep 2026pH 7.53 Sep 2026Ammonia 0.061 mg/l Sep 2026 |
| Bury Brook Road Culvert at Broughton | Bury Brook | 32 km | Last sampled 4 Jan 2005, before the imported period | |
| Bury Brook Bury Road Bridge | High Lode | 23 km | 14 Sep 2026 · 24 days ago | Oxygen 51.7%Temp 17.8 °CpH 7.46Ammonia 0.038 mg/l |
| Highlode 200 m downstream of Ramsey sewage treatment works O/F | High Lode | 20 km | Last sampled 15 Jan 2020, before the imported period | |
| Forty Foot River Forty Foot Bridge Ramsey | Vermuden's Drain | 17 km | Last sampled 11 Apr 2007, before the imported period | |
| Fenton Lode Washways Bridge PS | Twenty Foot Drain | 13 km | Last sampled 26 Aug 2009, before the imported period | |
| Forty Foot River Carters Road Bridge Chatteris | Vermuden's Drain | 9.3 km | Last sampled 8 Feb 2017, before the imported period | |
| Nightlayers Fen Pumping Station | Vermuden's Drain | 6.5 km | Last sampled 5 Dec 2022, before the imported period | |
| Counterdrain A142 Road Bridge Mepal | Counter Drain | 5.7 km | 2 Sep 2026 · 36 days ago | Oxygen 71.1% Mar 2024Temp 7.5 °C Mar 2024Ammonia 0.22 mg/l Mar 2024Nitrate 6.13 mg/l Mar 2024 |
| Crooked Drain Fortrey's Hall PS | Crooked Drain | 4.8 km | Last sampled 26 Aug 2009, before the imported period | |
| Counterdrain Welches Dam | Counter Drain | 0.2 km | 14 Sep 2026 · 24 days ago | Oxygen 99.7%Temp 20 °CpH 7.93Ammonia below 0.03 mg/l May 2026 |
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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