← Sewage & storm overflows

Dunblane WwTW CSO

Storm overflow operated by Scottish Water, discharging into River Allan. CSO.

Right now

Discharging now
Since 25 Sep 2026, 10:08 UK time · 3 h 49 min so far. Feed updated 5 min ago.

"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.

Official figures

188overflow events   837hours

2025, from Scottish Water's published data for monitored overflows (number of overflow events; Scottish Water does not use the 12/24-hour count). The monitor reported for 100% of the year.

YearEventsHoursMonitored
20222561,487100%
20233052,103100%
20242721,953100%
2025188837100%

"No data" means the monitor was not working or not required to report that year — not zero spills. 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.

Discharges we have observed

461 discharge periods since 1 Jan 2024, 1 still open. 459 of them come from Scottish Water's own event-duration-monitoring records (published by the company, Jan 2024 – Dec 2025); the live feed adds anything after that. The official annual count above is the figure to quote.

2024: 195 spills · 2,002 h · 197 days2025: 120 spills · 788 h · 125 days2026: 2 spills · 9 h · 2 days

Year chips use the EA's 12/24-hour counting method (the first 12 hours of a discharge count as one spill, each further 24-hour block with discharge as one more), so they are comparable with the official figures above; the monitor log's 463 raw blocks were merged into 461 continuous discharge periods (gaps under 15 min joined).

Started (UK time)EndedDischarge timeSource
25 Sep 2026, 10:08 ongoing 3 h 49 min live feed
23 Sep 2026, 04:45 23 Sep 2026, 09:45 4 h 45 min live feed · 2 blocks
27 Dec 2025, 18:15 27 Dec 2025, 19:27 1 h 13 min EDM log
22 Dec 2025, 05:00 22 Dec 2025, 10:45 5 h 45 min EDM log
19 Dec 2025, 12:45 20 Dec 2025, 02:00 13 h 15 min EDM log
19 Dec 2025, 09:45 19 Dec 2025, 10:30 45 min EDM log
19 Dec 2025, 06:45 19 Dec 2025, 08:45 2 h 0 min EDM log
18 Dec 2025, 22:30 18 Dec 2025, 23:00 30 min EDM log
18 Dec 2025, 18:45 18 Dec 2025, 22:00 3 h 15 min EDM log
18 Dec 2025, 07:30 18 Dec 2025, 10:06 2 h 37 min EDM log
17 Dec 2025, 14:30 18 Dec 2025, 00:45 10 h 15 min EDM log
17 Dec 2025, 05:15 17 Dec 2025, 13:45 8 h 30 min EDM log
16 Dec 2025, 07:42 16 Dec 2025, 10:15 2 h 32 min EDM log
13 Dec 2025, 23:00 15 Dec 2025, 23:15 2 d 0 h EDM log
13 Dec 2025, 20:00 13 Dec 2025, 21:45 1 h 45 min EDM log
13 Dec 2025, 14:45 13 Dec 2025, 19:30 4 h 45 min EDM log
12 Dec 2025, 07:30 12 Dec 2025, 11:00 3 h 30 min EDM log
12 Dec 2025, 01:45 12 Dec 2025, 03:45 2 h 0 min EDM log
9 Dec 2025, 05:45 11 Dec 2025, 23:00 2 d 17 h EDM log
8 Dec 2025, 06:45 8 Dec 2025, 10:00 3 h 15 min EDM log

Showing the latest 20 of 461.

Rain nearby — last 30 days

Nearest live rain gauge: Kinbuck, 5.0 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

Nearest river gauge
Bridge of Allan (Allan Water) · 2.5 km
Nearest rain gauge
Kinbuck · 5.0 km
Site reference
CSO003239
Coordinates
56.18125, -3.96364

Concerned about this overflow?

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.