BROADHEMPSTON STW_SSO_BROADHEMPSTON

Spill evidence · Friends of the Dart

BROADHEMPSTON STW_SSO_BROADHEMPSTON

Storm overflow at the works · SBB00165 · feeds BROADHEMPSTON_STW_BROADHEMPSTON
Wet weather

The discharge

Spill day
Thursday, 19 January 2023
Started
19 Jan 2023, 20:12
Ended
19 Jan 2023, 22:05
Duration
1 hour 52 minutes
Receiving water
Hems - Upper
Parish
Broadhempston

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
DateRainfall
19/01/2023 (spill day)0 mmdry
18/01/20230.5 mmrain
17/01/20230 mmdry
16/01/20230 mmdry
15/01/20232.1 mmrain

River flow that day: 23.519 m³/s. Verify at the EA rainfall station.

Gauge proximity

Outlet (red) vs matched rain gauge (blue), 4.7 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
Not Applicable
EA annual return (2023)
87 counted spills · 1761 h total
Monitor uptime (2023)
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 SBB00165). 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.