Spill evidence · Friends of the Dart

Scorriton STW

Storm overflow at the works · SBB01058 · feeds SCORRITON_STW_SCORRITON

Wet weather

The discharge

Spill day: Wednesday, 18 October 2023
Started: 18 Oct 2023, 09:18
Ended: 18 Oct 2023, 10:01
Duration: 43 minutes 29 seconds
Receiving water: Dart
Parish: West Buckfastleigh

Rainfall evidence

Daily rainfall at the matched gauge (Holne Priddons Farm) 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

Date	Rainfall
18/10/2023 (spill day)	28.2 mm	rain
17/10/2023	4 mm	rain
16/10/2023	0 mm	dry
15/10/2023	0 mm	dry
14/10/2023	0.4 mm	rain

River flow that day: 15.284 m³/s. Verify at the EA rainfall station.

Gauge proximity

Outlet (red) vs matched rain gauge (blue), 2.0 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 (2023): 132 counted spills · 1632 h total
Monitor uptime (2023): 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 SBB01058). Rainfall: EA Hydrology gauge b000c3f6-3922-48ea-8726-4173de4998d0. 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.