In the period we have records for, 2021-2023, sewage has been discharged in, or near (~3mi.), Twelveheads 1469 time(s). Sewage has been discharged for a total of 17120.8 hour(s). In total: 1.95 year(s)* of elapsed time.
95 The stations, on average, have been monitoring for 95% of the total time we have data for.
Discharge Volume by Year
Hours and Spills by Year
Uptime Yearly Summary (Average)
Summary of Bodies Receiving Discharge
(S) River Carnon Carnon River Carnon River (S) Hicks Mill Stream River Carnon Estuary(E)
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Twelveheads - Yearly Summary
Summary for Year 2023
646 Spills | 7068.6 hours
In 2023, sewage was discharged in, or near (~3mi.), Twelveheads 646 time(s). Sewage was discharged for a total of 7068.6 hour(s). In total: 0.8 year(s)* of elapsed time.
99.8 The stations, on average, have been monitoring for 99.8% of the total time in 2023. Stations with missing data have been excluded from this calculation.
A single station may appear twice when there are multiple individual outlets in the top 3.
Summary for Year 2022
448 Spills | 4818.5 hours
In 2022, sewage was discharged in, or near (~3mi.), Twelveheads 448 time(s). Sewage was discharged for a total of 4818.5 hour(s). In total: 0.55 year(s)* of elapsed time.
100 The stations, on average, have been monitoring for 100% of the total time in 2022. Stations with missing data have been excluded from this calculation.
A single station may appear twice when there are multiple individual outlets in the top 3.
Summary for Year 2021
375 Spills | 5233.6 hours
In 2021, sewage was discharged in, or near (~3mi.), Twelveheads 375 time(s). Sewage was discharged for a total of 5233.6 hour(s). In total: 0.59 year(s)* of elapsed time.
85.1 The stations, on average, have been monitoring for 85.1% of the total time in 2021. Stations with missing data have been excluded from this calculation.