← East Ogwell STW
Spill evidence · Friends of the River Teign
East Ogwell STW
Storm overflow at the works · SBB00393 · feeds EAST OGWELL_STW_EAST OGWELL
Dry spill
Evidence strength
High confidence- ✓ Long discharge (≥6 h)
- ✓ Dry on the EA 1-day window
- ✓ Rain gauge close (≤5 km)
- ✓ Monitor 97% operational that year
The discharge
- Spill day
- Tuesday, 21 November 2023
- Started
- 21 Nov 2023, 15:33
- Ended
- 22 Nov 2023, 00:25
- Duration
- 8 hours 52 minutes
- Receiving water
- Lemon
- Parish
- Ogwell
Rainfall evidence
Daily rainfall at the matched gauge (Bickington) 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 | |
|---|---|---|
| 21/11/2023 (spill day) | 0 mm | dry |
| 20/11/2023 | 0 mm | dry |
| 19/11/2023 | 3.6 mm | rain |
| 18/11/2023 | 0.2 mm | dry |
| 17/11/2023 | 14.5 mm | rain |
River flow that day: 10.904 m³/s. Verify at the EA rainfall station.
Gauge proximity
Outlet (red) vs matched rain gauge (blue), 4.9 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 (2023)
- 70 counted spills · 1178 h total
- Monitor uptime (2023)
- 97% 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 SBB00393). Rainfall: EA Hydrology gauge 31653dd5-c1ed-4091-a860-5e8d25936861. 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.