Spill evidence · Friends of the Dart

Stonepark Crescent, Ashburton

Combined sewer overflow · SBB01186 · feeds BUCKFASTLEIGH STW

Wet weather

The discharge

Spill day: Wednesday, 19 February 2025
Started: 19 Feb 2025, 20:27
Ended: 19 Feb 2025, 21:41
Duration: 1 hour 14 minutes
Receiving water: Ashburn
Parish: Ashburton

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

Date	Rainfall
19/02/2025 (spill day)	33.3 mm	rain
18/02/2025	6.4 mm	rain
17/02/2025	0.7 mm	rain
16/02/2025	0 mm	dry
15/02/2025	2.5 mm	rain

River flow that day: 20.721 m³/s. Verify at the EA rainfall station.

Gauge proximity

Outlet (red) vs matched rain gauge (blue), 3.6 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: No — the works was also overflowing that day.
EA annual return (2025): 39 counted spills · 175 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 SBB01186). 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.