Rattery STW

Spill evidence · Friends of the Dart

Rattery STW

Storm overflow at the works · SBB01016 · feeds RATTERY_STW_RATTERY
Wet weather

The discharge

Spill day
Friday, 3 October 2025
Started
3 Oct 2025, 01:21
Ended
3 Oct 2025, 01:52
Duration
30 minutes 40 seconds
Receiving water
Bidwell Brook
Parish
Rattery

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
03/10/2025 (spill day)22.9 mmrain
02/10/202516.7 mmrain
01/10/20250 mmdry
30/09/20250 mmdry
29/09/20250 mmdry

River flow that day: 23.171 m³/s. Verify at the EA rainfall station.

Gauge proximity

Outlet (red) vs matched rain gauge (blue), 4.3 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 (2025)
107 counted spills · 1713 h total
Monitor uptime (2025)
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 SBB01016). 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.