← Kilbury STW, Buckfastleigh
Spill evidence · Friends of the Dart
Kilbury STW, Buckfastleigh
Storm overflow at the works · SBB00178 · feeds BUCKFASTLEIGH STW
Dry spill
Evidence strength
High confidence- ✓ Long discharge (≥6 h)
- ✓ Dry on the EA 1-day window
- ✓ Rain gauge close (≤5 km)
- ✓ Monitor 100% operational that year
The discharge
- Spill day
- Friday, 22 October 2021
- Started
- 22 Oct 2021, 05:35
- Ended
- 22 Oct 2021, 22:49
- Duration
- 17 hours 13 minutes
- Receiving water
- Dart
- Parish
- Buckfastleigh
Rainfall evidence
Daily rainfall at the matched gauge (Austins Bridge) 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 | |
|---|---|---|
| 22/10/2021 (spill day) | 0 mm | dry |
| 21/10/2021 | 0 mm | dry |
| 20/10/2021 | 27.7 mm | rain |
| 19/10/2021 | 50.3 mm | rain |
| 18/10/2021 | 16.8 mm | rain |
River flow that day: 16.504 m³/s. Verify at the EA rainfall station.
Gauge proximity
Outlet (red) vs matched rain gauge (blue), 0.0 km apart. Closer means the rainfall reading is more representative of the overflow.
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Severity & context
- Bathing water
- Steamer Quay, Dart Estuary
- Shellfish water
- Not Applicable
- EA annual return (2021)
- 107 counted spills · 1340 h total
- Monitor uptime (2021)
- 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 SBB00178). Rainfall: EA Hydrology gauge fd8ea26c-8052-48c5-a1bb-bbd5ebbbb3d3_364176. 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 Hub.