← Ayliffe's Field, Bovey Tracey
Spill evidence · Friends of the River Teign
Ayliffe's Field, Bovey Tracey
Combined sewer overflow · SBB00061 · feeds HEATHFIELD STW
Dry spill
Evidence strength
Medium confidence- ✓ Long discharge (≥6 h)
- ✓ Dry on the EA 1-day window
- ✓ Rain gauge close (≤5 km)
The discharge
- Spill day
- Friday, 10 July 2020
- Started
- 10 Jul 2020, 09:10
- Ended
- 10 Jul 2020, 16:54
- Duration
- 7 hours 44 minutes
- Receiving water
- Lower Bovey
- Parish
- Bovey Tracey
Rainfall evidence
Daily rainfall at the matched gauge (Bovey Tracey) 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: Dry spill3-day window: Wet weather4-day window: Wet weather
| Date | Rainfall | |
|---|---|---|
| 10/07/2020 (spill day) | 0 mm | dry |
| 09/07/2020 | 0.2 mm | dry |
| 08/07/2020 | 0.6 mm | rain |
| 07/07/2020 | 0 mm | dry |
| 06/07/2020 | 0 mm | dry |
River flow that day: 1.071 m³/s. Verify at the EA rainfall station.
Gauge proximity
Outlet (red) vs matched rain gauge (blue), 3.1 km apart. Closer means the rainfall reading is more representative of the overflow.
Loading map…
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 SBB00061). Rainfall: EA Hydrology gauge de3285a5-0abf-4c5b-8ee2-63187f9124ae. 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.