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Live levels from 1 monitoring station across North Yorkshire, updated every 15 minutes.
| Station | Level now | Status |
|---|---|---|
| Selby Dam Pumping Stationstructure | 2.03 mAOD 31m 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 Selby Dam above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.
No gauged tributary joins the Selby Dam above Selby Dam Pumping Station on the river map. Streams without a gauge are not counted here.
Below Selby Dam Pumping Station, its water next reaches Selby Westmill, a gauge on River Ouse, 200 m 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.
1 storm overflow is traced upstream of Selby Dam Pumping Station, the Selby Dam’s lowest gauge on the river map: on the Selby Dam itself, on its gauged tributaries, and on smaller streams that join above there.
Official figures for 2025, for the overflow traced upstream of Selby Dam Pumping Station: 22 spills over 113 hours.
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 Selby Dam includes the smaller streams that join it there.
Within 3 km of one of the Selby Dam’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: © Yorkshire 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.
7 sampling points on the Selby Dam and the streams that join it above Selby Dam Pumping Station. 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) |
|---|---|---|---|---|
| Woodcock Drain at Broad Lane | Woodcock Drain | 12 km | 4 Sep 2026 · 34 days ago | Oxygen 22.7% Jun 2026Temp 15.5 °C Jun 2026pH 7.39 Jun 2026Ammonia 0.46 mg/l Jun 2026 |
| Fox Dike at Fox Bridge | Fox Dike | 9.4 km | 15 Feb 2024 · 2.6 years ago | Oxygen 80.5%Temp 9.5 °CpH 7.53Ammonia 0.082 mg/l |
| Upper Fox Drain upstream confluence of Selby Dam | Upper Fox Drain | 8.7 km | Last sampled 28 Dec 2018, before the imported period | |
| Selby Dam at Rest Park | Selby Dam | 8.6 km | Last sampled 8 Dec 2021, before the imported period | |
| Selby Dam at Caravan Park | Selby Dam | 5.1 km | 15 Sep 2026 · 23 days ago | Oxygen 34.3%Temp 17.6 °CpH 7.28Ammonia 0.12 mg/l |
| Selby Dam at Thorpe Hall | Selby Dam | 4.1 km | Last sampled 16 Mar 2020, before the imported period | |
| Selby Dam at Selby | Selby Dam | 0.1 km | 12 May 2026 · 5 months ago | Oxygen 147.3%Temp 12.6 °CpH 8.33Ammonia 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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