Harberton STW

Spill evidence · Friends of the Dart

Harberton STW

Storm overflow at the works · SBB00536 · feeds HARBERTON_STW_HARBERTON
Wet weather

The discharge

Spill day
Friday, 5 July 2024
Started
5 Jul 2024, 23:11
Ended
6 Jul 2024, 00:15
Duration
1 hour 3 minutes
Receiving water
Harbourne River
Parish
Harberton

Rainfall evidence

Daily rainfall at the matched gauge (Harbertonford Slipperstone) 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
05/07/2024 (spill day)20.3 mmrain
04/07/202412 mmrain
03/07/20240.1 mmdry
02/07/20240.2 mmdry
01/07/20240 mmdry

River flow that day: 6.655 m³/s. Verify at the EA rainfall station.

Gauge proximity

Outlet (red) vs matched rain gauge (blue), 2.5 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
EA annual return (2024)
164 counted spills · 3046 h total
Monitor uptime (2024)
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 SBB00536). Rainfall: EA Hydrology gauge 8d954129-924c-47e3-8750-5f29a59617b2. 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.