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Compton Castle

Spill evidence · Friends of the River Teign

Compton Castle

Combined sewer overflow · SBB00301 · feeds COMPTON AND MARLDON STW
Wet weather

The discharge

Spill day
Tuesday, 24 March 2026
Started
24 Mar 2026, 23:48
Ended
25 Mar 2026, 00:22
Duration
34 minutes
Receiving water
Aller Brook
Parish
Marldon

Rainfall evidence

Daily rainfall at the matched gauge (Torbay Compton) 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
24/03/2026 (spill day)4.3 mmrain
23/03/20260 mmdry
22/03/20260.1 mmdry
21/03/20260.1 mmdry
20/03/20260 mmdry

River flow that day: 4.026 m³/s. Verify at the EA rainfall station.

Gauge proximity

Outlet (red) vs matched rain gauge (blue), 1.4 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
Teign Estuary
Ahead of the works
Yes — the treatment works' own overflow stayed shut that day, so capacity was available. Avoidable.
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 SBB00301). Rainfall: EA Hydrology gauge e7e2f7d4-f497-4adc-b077-c20bc2dcedfa. 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 Teign Data.
Spill evidence — Compton Castle — River Teign Data