Gattonside, Chainbridge CSO
Storm overflow run by Scottish Water, discharging into River Tweed.
"Not discharging" means the company's monitor reports no discharge right now — not that the water is clean. The feed publishes status only; no discharge volume is measured.
Year by year
Scottish Water's published data for monitored overflows (number of overflow events; Scottish Water does not use the 12/24-hour count). 2026 is our own running count, the same way, from the live feed since 28 February (when we began keeping every discharge it reports) — so it can only be lower than the full year. The official figure is published next spring.
"No data" means the monitor was not working or not required to report that year — not zero. Scottish Water counts each overflow event; England and Wales count 12/24-hour "spills", so these numbers are not directly comparable with English or Welsh overflows.
Twin outlet
Scottish Water runs another overflow within 300 m that also discharges into River Tweed. They share the sewer and the storm, so one outlet's figures are only part of what reaches the water.
This overflow: 894 spills in 2025. Distances are between the published outlet points.
Discharges we have recorded
381 discharge periods since 1 Jan 2025. 379 of them come from Scottish Water's own event-duration-monitoring records (published by the company, Jan 2025 – Dec 2025); the live feed adds anything after that. The official annual count is the figure to quote.
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Wed 23 Sep 2026, 07:0030 min
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Sat 20 Jun 2026, 03:5010 min
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Fri 26 Dec 2025, 10:4510 min
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Fri 26 Dec 2025, 10:155 min
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Fri 26 Dec 2025, 09:055 min
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Thu 25 Dec 2025, 10:4510 min
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Thu 25 Dec 2025, 09:4520 min
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Thu 25 Dec 2025, 08:4530 min
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Wed 24 Dec 2025, 09:4530 min
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Wed 24 Dec 2025, 09:0510 min
Show 30 earlier (of 381)
| Started (UK time) | Ended | Discharge time |
|---|---|---|
| 23 Dec 2025, 10:30 | 11:20 | 35 min |
| 23 Dec 2025, 08:10 | 10:05 | 1 h 20 min |
| 22 Dec 2025, 19:45 | 19:50 | 5 min |
| 22 Dec 2025, 19:15 | 19:25 | 10 min |
| 22 Dec 2025, 14:45 | 14:55 | 10 min |
| 22 Dec 2025, 13:50 | 14:05 | 15 min |
| 22 Dec 2025, 13:20 | 13:25 | 5 min |
| 22 Dec 2025, 05:35 | 12:35 | 6 h 40 min |
| 21 Dec 2025, 23:45 | 23:50 | 5 min |
| 21 Dec 2025, 22:45 | 22:50 | 5 min |
| 21 Dec 2025, 20:55 | 21:00 | 5 min |
| 21 Dec 2025, 18:35 | 19:40 | 1 h 5 min |
| 21 Dec 2025, 16:50 | 18:10 | 55 min |
| 21 Dec 2025, 16:10 | 16:25 | 15 min |
| 21 Dec 2025, 08:20 | 15:25 | 6 h 5 min |
| 20 Dec 2025, 22:50 | 23:20 | 15 min |
| 20 Dec 2025, 21:50 | 21:55 | 5 min |
| 20 Dec 2025, 20:25 | 20:45 | 15 min |
| 20 Dec 2025, 19:55 | 20:00 | 5 min |
| 20 Dec 2025, 18:25 | 19:35 | 1 h 0 min |
| 20 Dec 2025, 15:20 | 18:05 | 2 h 35 min |
| 20 Dec 2025, 14:15 | 15:00 | 45 min |
| 20 Dec 2025, 07:30 | 13:55 | 6 h 5 min |
| 19 Dec 2025, 23:40 | 23:45 | 5 min |
| 19 Dec 2025, 23:10 | 23:15 | 5 min |
| 19 Dec 2025, 22:15 | 22:35 | 15 min |
| 19 Dec 2025, 21:25 | 21:30 | 5 min |
| 19 Dec 2025, 16:35 | 21:05 | 3 h 40 min |
| 19 Dec 2025, 15:55 | 16:15 | 15 min |
| 19 Dec 2025, 15:10 | 15:20 | 10 min |
The year figures above use the EA's 12/24-hour counting method, so they are comparable with the official figures; the monitor log's 896 raw blocks were merged into 381 continuous discharge periods (gaps under 15 min joined).
Rain nearby last 30 days
Nearest live rain gauge: Boleside, 4.9 km away. Brown shading = when this overflow was discharging; ▼ = a discharge start.
Overflow shading is a timing match, not proof of cause — heavy rain and spills share a trigger. Times come from the water company’s event-duration monitor (site status only; no discharge volume is published).
Where it is
Concerned about this overflow?
Report pollution you can see or smell to the regulator straight away; the company handles complaints about the overflow itself.
Live status: © Scottish Water, near-real-time Overflow Map data, open licence for reuse. EDM monitors indicate overflows; they do not confirm them, and this is not advice on water quality. Spill-event history and annual figures: Scottish Water overflow event data, Open Government Licence. Times are shown in UK local time. FloodRadar republishes the monitor's status; it does not measure discharges itself.