Gwendraeth Fawr - Headwaters Afan Goch at Parc Y Dai No1 CSO Drefach
This is a sewage discharge monitoring station, which is usually a type of Event Duration Monitor (EDM). These stations themselves are designed to mitigate the impact of heavy rainfall by discharging, under permitted conditions, any overflow into a water body. They are often actively discharging during flood events. This page presents the data acquired by the monitoring system for this discharge station.
The declared body of water receiving this discharge is the "Gwendraeth Fawr - Headwaters Afan Goch" This station has discharged sewage 196 time(s). The station has discharged for a total of 776 hour(s). This is 2.95% of the time which we have data for. In total: 32 day(s)* of elapsed time.
51 | 12877.2 hours This monitor has been operational for 51% of its total time we have data for. There are 12877.2 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Parc Y Dai No1 CSO Drefach" is 2023, discharging sewage for 452.7 hours of the year.
Uptimes below 90% (red line) should be accompanied by a reason
*This is total time in days, not individual days.
Yearly Summary
Most Recent Year - 2023
Gwendraeth Fawr - Headwaters Afan Goch | 112 Spills | 452.7 hours | 5.16 The declared body of water receiving this discharge is the "Gwendraeth Fawr - Headwaters Afan Goch" This station discharged sewage 112 time(s) during 2023. The station discharged for a total of 452.7 hour(s). This is around 18 day(s)* or 5.16% of the year.
98.6 | 122.6 hours This monitor was operational for 98.6% of the year. Leaving 122.6 hours unaccounted for in the data.
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
Natural Resources Wales
Operator
Dwr Cymru Welsh Water
Primary Permit #
BP0301001
Secondary Permit #
BP0301001
2022
Note: Data is potentially unreliable in 2022 Due to high unavailability of the monitor
Gwendraeth Fawr - Headwaters Afan Goch | 57 Spills | 175 hours | 1.99 The declared body of water receiving this discharge is the "Gwendraeth Fawr - Headwaters Afan Goch" This station discharged sewage 57 time(s) during 2022. The station discharged for a total of 175 hour(s). This is around 7 day(s)* or 1.99% of the year.
39.4 | 5305 hours This monitor was operational for 39.4% of the year. Leaving 5305 hours unaccounted for in the data. This falls below the 90% threshold where a reason should be given
The following reasons have been given for the downtime in 2022: Comms Failure / Issue
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
Natural Resources Wales
Operator
Dwr Cymru Welsh Water
Primary Permit #
BP0301001
Secondary Permit #
BP0301001
2021
Note: Data is potentially unreliable in 2021 Due to high unavailability of the monitor
Gwendraeth Fawr - Headwaters Afan Goch | 27 Spills | 148.2 hours | 1.69 The declared body of water receiving this discharge is the " Gwendraeth Fawr - Headwaters Afan Goch" This station discharged sewage 27 time(s) during 2021. The station discharged for a total of 148.2 hour(s). This is around 6 day(s)* or 1.69% of the year.
16.3 | 7330.3 hours This monitor was operational for 16.3% of the year. Leaving 7330.3 hours unaccounted for in the data. This falls below the 90% threshold where a reason should be given
The following reasons have been given for the downtime in 2021: Communications Issue - Access Issue
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
Natural Resources Wales
Operator
Dwr Cymru Welsh Water
Primary Permit #
BP0301001
Secondary Permit #
BP0301001
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Station overseen (meaning either provided, or regulated) by: Natural Resources Wales The information displayed here is used under license. We are not affiliated with any governing, or other, bodies. Nor do they necessarily endorse us, or us them. Please note that FloodMapper does not verify or check the accuracy of the data provided by third parties. The data is used as received from the source. Any underlying errors, inconsistencies, or inaccuracies in the original data will be reflected in the information presented on our platform. Users are advised to exercise their own judgment and caution when using the data for decision-making purposes. Information about our data sources and licenses can be found
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