Dwyfawr - Lower at CSO At Garndolbenmaen STW
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.
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.
Operational Summary - 2021-2023
1641.2 hours | 6.24
The declared body of water receiving this discharge is the "Dwyfawr - Lower"
This station has discharged sewage 155 time(s).
The station has discharged for a total of 1641.2 hour(s).
This is 6.24% of the time which we have data for.
In total: 68 day(s)* of elapsed time.
95.3 | 1226.4 hours
This monitor has been operational for 95.3% of its total time we have data for.
There are 1226.4 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "CSO At Garndolbenmaen STW" is 2021, discharging sewage for 1058.5 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
345.5 hours | 3.94
The declared body of water receiving this discharge is the "Dwyfawr - Lower"
This station discharged sewage 34 time(s) during 2023.
The station discharged for a total of 345.5 hour(s).
This is around 14 day(s)* or 3.94% of the year.
86.2 | 1206.2 hours
This monitor was operational for 86.2% of the year.
Leaving 1206.2 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 2023:
Telemetry Or Data Archiving 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 # | AB3495FT |
| Secondary Permit # | AB3495FT |
2022
237.2 hours | 2.7
The declared body of water receiving this discharge is the "Dwyfawr - Lower"
This station discharged sewage 21 time(s) during 2022.
The station discharged for a total of 237.2 hour(s).
This is around 9 day(s)* or 2.7% of the year.
100 | 0 hours
This monitor was operational for 100% of the year.
Leaving 0 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 # | AB3495FT |
| Secondary Permit # | AB3495FT |
2021
1058.5 hours | 12.08
The declared body of water receiving this discharge is the " Dwyfawr - Lower"
This station discharged sewage 100 time(s) during 2021.
The station discharged for a total of 1058.5 hour(s).
This is around 44 day(s)* or 12.08% of the year.
100 | 0 hours
This monitor was operational for 100% of the year.
Leaving 0 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 # | AB3495FT |
| Secondary Permit # | AB3495FT |
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Operator comments are presented, unedited, as they were received by us and do not reflect our views or position
Local Information
Nearby Flood Warnings
None
Nearby Alert Areas
None
Nearby Stations
Garndolbenmaen
Nearby Sewage Discharge Stations
Bryncir STW
CSO And Eo At Llanystumdwy Pumping Station
Llanystumdwy (W Porthmadog) A (Settled Storm)
Pentrefelin STW
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