← Compton & Marldon STW
Spill evidence · Friends of the River Teign
Compton & Marldon STW
Storm overflow at the works · SBB00300 · feeds COMPTON AND MARLDON STW
Dry spill
Evidence strength
Medium confidence- ✓ Dry across a 4-day antecedent window
- ✓ Rain gauge close (≤5 km)
- ⚠ Short discharge (<1 h) — weaker signal
The discharge
- Spill day
- Thursday, 16 July 2026
- Started
- 16 Jul 2026, 07:58
- Ended
- 16 Jul 2026, 08:26
- Duration
- 27 minutes 50 seconds
- Receiving water
- Aller Brook
- Parish
- Marldon
Rainfall evidence
Daily rainfall at the matched gauge (Torbay Compton) 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: Dry spill
| Date | Rainfall | |
|---|---|---|
| 16/07/2026 (spill day) | 0 mm | dry |
| 15/07/2026 | 0 mm | dry |
| 14/07/2026 | 0 mm | dry |
| 13/07/2026 | 0 mm | dry |
| 12/07/2026 | 0 mm | dry |
River flow that day: 0.457 m³/s. Verify at the EA rainfall station.
Gauge proximity
Outlet (red) vs matched rain gauge (blue), 1.7 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
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 SBB00300). Rainfall: EA Hydrology gauge e7e2f7d4-f497-4adc-b077-c20bc2dcedfa. 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.