← 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- ✓ Dry on the EA 1-day window
- ⚠ Short discharge (<1 h) — weaker signal
The discharge
- Spill day
- Tuesday, 9 February 2021
- Started
- 9 Feb 2021, 16:15
- Ended
- 9 Feb 2021, 16:45
- Duration
- 30 minutes
- 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.
Loading map…
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.