← Christow STW, Teign Valley
Spill evidence · Friends of the River Teign
Christow STW, Teign Valley
Storm overflow at the works · SBB00251 · feeds CHRISTOW_STW_TEIGN VALLEY
Dry spill
Evidence strength
Medium confidence- ✓ Sustained discharge (≥1 h)
- ✓ Dry on the EA 1-day window
- ✓ Monitor 100% operational that year
The discharge
- Spill day
- Thursday, 11 May 2023
- Started
- 11 May 2023, 21:56
- Ended
- 12 May 2023, 01:05
- Duration
- 3 hours 8 minutes
- Receiving water
- Teign (Lower)
- Parish
- Christow
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 | |
|---|---|---|
| 11/05/2023 (spill day) | 0 mm | dry |
| 10/05/2023 | 0 mm | dry |
| 09/05/2023 | 11.7 mm | rain |
| 08/05/2023 | 14.6 mm | rain |
| 07/05/2023 | 4.2 mm | rain |
River flow that day: 7.302 m³/s. Verify at the EA rainfall station.
Gauge proximity
Outlet (red) vs matched rain gauge (blue), 7.3 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
- EA annual return (2023)
- 112 counted spills · 2169 h total
- Monitor uptime (2023)
- 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 SBB00251). 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.