← Heathfield STW, Newton Abbot
Spill evidence · Friends of the River Teign
Heathfield STW, Newton Abbot
Storm overflow at the works · SBB00557 · feeds HEATHFIELD STW
Dry spill
Evidence strength
Low confidence- ✓ Dry on the EA 1-day window
- ✓ Monitor 100% operational that year
- ⚠ Short discharge (<1 h) — weaker signal
The discharge
- Spill day
- Friday, 1 January 2021
- Started
- 1 Jan 2021, 00:00
- Ended
- 1 Jan 2021, 00:27
- Duration
- 27 minutes 1 second
- 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 | |
|---|---|---|
| 01/01/2021 (spill day) | 0.1 mm | dry |
| 31/12/2020 | 0 mm | dry |
| 30/12/2020 | 3.3 mm | rain |
| 29/12/2020 | 0.4 mm | rain |
| 28/12/2020 | 3.9 mm | rain |
River flow that day: 10.107 m³/s. Verify at the EA rainfall station.
Gauge proximity
Outlet (red) vs matched rain gauge (blue), 5.6 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
- Teign Estuary
- EA annual return (2021)
- 88 counted spills · 1579 h total
- Monitor uptime (2021)
- 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 SBB00557). 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.