← Cheriton Bishop STW
Spill evidence · Friends of the River Teign
Cheriton Bishop STW
Storm overflow at the works · SBB00241 · feeds CHERITON BISHOP system
Dry spill
Evidence strength
Low confidence- ✓ Sustained discharge (≥1 h)
- ✓ Dry on the EA 1-day window
The discharge
- Spill day
- Tuesday, 9 February 2021
- Started
- 9 Feb 2021, 10:00
- Ended
- 9 Feb 2021, 13:00
- Duration
- 3 hours
- Receiving water
- —
- Parish
- —
Rainfall evidence
Daily rainfall at the matched gauge (Mardon Down) 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 | |
|---|---|---|
| 09/02/2021 (spill day) | 0.1 mm | dry |
| 08/02/2021 | 0 mm | dry |
| 07/02/2021 | 0 mm | dry |
| 06/02/2021 | 3.2 mm | rain |
| 05/02/2021 | 0.6 mm | rain |
River flow that day: 6.828 m³/s. Verify at the EA rainfall station.
Gauge proximity
Outlet (red) vs matched rain gauge (blue), 5.4 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
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 SBB00241). Rainfall: EA Hydrology gauge 323b21d8-c9a4-4681-bc5c-62d7337993ac. 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.