← PEAR TREE CROSS_CSO_ASHBURTON
Spill evidence · Friends of the Dart
PEAR TREE CROSS_CSO_ASHBURTON
Combined sewer overflow · SBB00917 · feeds BUCKFASTLEIGH STW
Dry spill
Evidence strength
Medium confidence- ✓ Dry on the EA 1-day window
- ✓ Rain gauge close (≤5 km)
- ✓ Monitor 100% operational that year
The discharge
- Spill day
- Monday, 12 December 2022
- Started
- 12 Dec 2022, 10:50
- Ended
- 12 Dec 2022, 10:50
- Duration
- 0 seconds
- Receiving water
- Ashburn
- Parish
- Ashburton
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 | |
|---|---|---|
| 12/12/2022 (spill day) | 0.1 mm | dry |
| 11/12/2022 | 0 mm | dry |
| 10/12/2022 | 0.4 mm | rain |
| 09/12/2022 | 0 mm | dry |
| 08/12/2022 | 0 mm | dry |
River flow that day: 6.698 m³/s. Verify at the EA rainfall station.
Gauge proximity
Outlet (red) vs matched rain gauge (blue), 3.5 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
- Ahead of the works
- Yes — the treatment works' own overflow stayed shut that day, so capacity was available. Avoidable.
- EA annual return (2022)
- 13 counted spills · 159 h total
- Monitor uptime (2022)
- 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 SBB00917). 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.