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Throwleigh STW

Spill evidence · Friends of the River Teign

Throwleigh STW

Storm overflow at the works · SBB01243 · feeds THROWLEIGH_STW_THROWLEIGH
Wet weather

The discharge

Spill day
Thursday, 16 November 2023
Started
16 Nov 2023, 09:48
Ended
16 Nov 2023, 10:03
Duration
15 minutes 31 seconds
Receiving water
Blackaton Brook
Parish
Throwleigh

Rainfall evidence

Daily rainfall at the matched gauge (Sticklepath) 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
16/11/2023 (spill day)2.2 mmrain
15/11/202316.2 mmrain
14/11/20238.9 mmrain
13/11/20232.4 mmrain
12/11/202311.8 mmrain

River flow that day: 30.878 m³/s. Verify at the EA rainfall station.

Gauge proximity

Outlet (red) vs matched rain gauge (blue), 5.1 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)
38 counted spills · 362 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 SBB01243). Rainfall: EA Hydrology gauge 8a94b829-d54c-402a-8586-b35cece06a2f_390511. 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 — Throwleigh STW — River Teign Data