In the period we have records for, 2021-2023, sewage has been discharged in, or near (~3mi.), Cwmdu 488 time(s). Sewage has been discharged for a total of 2751.5 hour(s). In total: 0.31 year(s)* of elapsed time.
99.1 The stations, on average, have been monitoring for 99.1% 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
Nant Cleisfer - Source To Conf R Usk R Usk Conf Afon Crawnon To Conf Gavenny R Usk Conf Afon Crawnon To Conf Gavenny R
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Cwmdu - Yearly Summary
Summary for Year 2023
167 Spills | 1168.7 hours
In 2023, sewage was discharged in, or near (~3mi.), Cwmdu 167 time(s). Sewage was discharged for a total of 1168.7 hour(s). In total: 0.13 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
133 Spills | 634.7 hours
In 2022, sewage was discharged in, or near (~3mi.), Cwmdu 133 time(s). Sewage was discharged for a total of 634.7 hour(s). In total: 0.07 year(s)* of elapsed time.
99 The stations, on average, have been monitoring for 99% 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
188 Spills | 948 hours
In 2021, sewage was discharged in, or near (~3mi.), Cwmdu 188 time(s). Sewage was discharged for a total of 948 hour(s). In total: 0.1 year(s)* of elapsed time.
98.5 The stations, on average, have been monitoring for 98.5% of the total time in 2021. Stations with missing data have been excluded from this calculation.