← Smith St, Dartmouth
Spill evidence · Friends of the Dart
Smith St, Dartmouth
Combined sewer overflow · SBB01095 · feeds DARTMOUTH STW
Wet weather
The discharge
- Spill day
- Sunday, 18 December 2022
- Started
- 18 Dec 2022, 16:56
- Ended
- 18 Dec 2022, 17:33
- Duration
- 37 minutes
- Receiving water
- Dart (Tidal)
- Parish
- Dartmouth
Rainfall evidence
Daily rainfall at the matched gauge (Brixham) 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 | |
|---|---|---|
| 18/12/2022 (spill day) | 62 mm | rain |
| 17/12/2022 | 6.2 mm | rain |
| 16/12/2022 | 0.2 mm | dry |
| 15/12/2022 | 0 mm | dry |
| 14/12/2022 | 0 mm | dry |
River flow that day: 83.248 m³/s. Verify at the EA rainfall station.
Gauge proximity
Outlet (red) vs matched rain gauge (blue), 5.3 km apart. Closer means the rainfall reading is more representative of the overflow.
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Severity & context
- Bathing water
- Warfleet Creek, Dart Estuary
- Shellfish water
- Dart
- Ahead of the works
- Unknown (no works overflow data)
- EA annual return (2022)
- 94 counted spills · 206 h total
- Monitor uptime (2022)
- 96% operational
⚠ Coastal / tidal location — very short discharges around high tide can be monitor artefacts; corroborate with tide times before relying on short events here.
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 SBB01095). Rainfall: EA Hydrology gauge 9dba2bf3-f5ea-4616-ac8e-dce16dbc0dc8. 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.