← Chudleigh Knighton STW
Spill evidence · Friends of the River Teign
Chudleigh Knighton STW
Storm overflow at the works · SBB00252 · feeds CHUDLEIGH KNIGHTON_STW_CHUDLEIGH KNIGHTO
Dry spill
Evidence strength
Medium confidence- ✓ Dry across a 3-day window
- ✓ Monitor 100% operational that year
- ⚠ Short discharge (<1 h) — weaker signal
The discharge
- Spill day
- Thursday, 20 July 2023
- Started
- 20 Jul 2023, 07:46
- Ended
- 20 Jul 2023, 08:05
- Duration
- 18 minutes 11 seconds
- Receiving water
- Teign (Lower)
- Parish
- Hennock
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: Dry spill4-day window: Wet weather
| Date | Rainfall | |
|---|---|---|
| 20/07/2023 (spill day) | 0 mm | dry |
| 19/07/2023 | 0 mm | dry |
| 18/07/2023 | 0.1 mm | dry |
| 17/07/2023 | 0 mm | dry |
| 16/07/2023 | 2.2 mm | rain |
River flow that day: 1.109 m³/s. Verify at the EA rainfall station.
Gauge proximity
Outlet (red) vs matched rain gauge (blue), 6.2 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)
- 81 counted spills · 336 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 SBB00252). 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.