Old Woollen Mill, Buckfastleigh

Spill evidence · Friends of the Dart

Old Woollen Mill, Buckfastleigh

Combined sewer overflow · SBB00885 · feeds BUCKFASTLEIGH STW
Wet weather

The discharge

Spill day
Wednesday, 20 January 2021
Started
20 Jan 2021, 19:22
Ended
20 Jan 2021, 20:54
Duration
1 hour 32 minutes
Receiving water
Dart
Parish
Buckfastleigh

Rainfall evidence

Daily rainfall at the matched gauge (Austins Bridge) for the spill day and the days before. A spill is dry when every day in the window is ≤ 0.25 mm.

1-day window: Wet weather3-day window: Wet weather4-day window: Wet weather
DateRainfall
20/01/2021 (spill day)30.5 mmrain
19/01/202140.1 mmrain
18/01/202118.9 mmrain
17/01/20210 mmdry
16/01/20210 mmdry

River flow that day: 124.9 m³/s. Verify at the EA rainfall station.

Gauge proximity

Outlet (red) vs matched rain gauge (blue), 1.6 km apart. Closer means the rainfall reading is more representative of the overflow.

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Severity & context

Bathing water
Not Applicable
Shellfish water
Not Applicable
Ahead of the works
Yes — the treatment works' own overflow stayed shut that day, so capacity was available. Avoidable.
EA annual return (2021)
10 counted spills · 7 h total
Monitor uptime (2021)
100% operational
Method & provenance. Dry/wet classification is decided by rainfall at the nearest EA gauge — ≤ 0.25 mm on the spill day and each preceding day of the window (how we classify). Spill data: Environment Agency EDM (outlet SBB00885). Rainfall: EA Hydrology gauge fd8ea26c-8052-48c5-a1bb-bbd5ebbbb3d3_364176. A dry spill is precautionary evidence of a likely fault, not proof of an offence — we test the rainfall, not the works' flow. Generated by River Hub.