Spill evidence · Friends of the Dart

Cornworthy STW, Dartmouth

Storm overflow at the works · SBB00309 · feeds CORNWORTHY_STW_DARTMOUTH

No rain data

The discharge

Spill day: Saturday, 2 October 2021
Started: 2 Oct 2021, 06:45
Ended: 2 Oct 2021, 17:32
Duration: 10 hours 47 minutes
Receiving water: —
Parish: —

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: No rain data3-day window: No rain data4-day window: No rain data

Date	Rainfall
02/10/2021 (spill day)	no data
01/10/2021	no data
30/09/2021	no data
29/09/2021	no data
28/09/2021	no data

River flow that day: 23.318 m³/s. Verify at the EA rainfall station.

Gauge proximity

Outlet (red) vs matched rain gauge (blue), 6.1 km apart. Closer means the rainfall reading is more representative of the overflow.

Loading map…

Severity & context

Bathing water: Not Applicable
Shellfish water: Dart

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 SBB00309). 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.