← Rattery STW
Spill evidence · Friends of the Dart
Rattery STW
Storm overflow at the works · SBB01016 · feeds RATTERY_STW_RATTERY
Wet weather
The discharge
- Spill day
- Wednesday, 17 September 2025
- Started
- 17 Sept 2025, 10:16
- Ended
- 17 Sept 2025, 10:36
- Duration
- 20 minutes 20 seconds
- Receiving water
- Bidwell Brook
- Parish
- Rattery
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: Wet weather3-day window: Wet weather4-day window: Wet weather
| Date | Rainfall | |
|---|---|---|
| 17/09/2025 (spill day) | 19.4 mm | rain |
| 16/09/2025 | 10.7 mm | rain |
| 15/09/2025 | 0.8 mm | rain |
| 14/09/2025 | 22.8 mm | rain |
| 13/09/2025 | 1.2 mm | rain |
River flow that day: 21.031 m³/s. Verify at the EA rainfall station.
Gauge proximity
Outlet (red) vs matched rain gauge (blue), 4.3 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 (2025)
- 107 counted spills · 1713 h total
- Monitor uptime (2025)
- 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 SBB01016). 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.