Porthmadog Cut at Chapel Street/Madog Street Porthm
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
40 hours | 0.15
The declared body of water receiving this discharge is the "Porthmadog Cut"
This station has discharged sewage 103 time(s).
The station has discharged for a total of 40 hour(s).
This is 0.15% of the time which we have data for.
In total: 1 day(s)* of elapsed time.
45.3 | 14366.4 hours
This monitor has been operational for 45.3% of its total time we have data for.
There are 14366.4 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Chapel Street/Madog Street Porthm" is 2022, discharging sewage for 37 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
Note: Data is potentially unreliable in 2023
Due to high unavailability of the monitor
Porthmadog Cut | 5 Spills | Due to high unavailability of the monitor
3 hours | 0.03
The declared body of water receiving this discharge is the "Porthmadog Cut"
This station discharged sewage 5 time(s) during 2023.
The station discharged for a total of 3 hour(s).
This is around 0 day(s)* or 0.03% of the year.
38 | 5431.2 hours
This monitor was operational for 38% of the year.
Leaving 5431.2 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:
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 # | CG0357801 |
| Secondary Permit # | CG0357801 |
2022
37 hours | 0.42
The declared body of water receiving this discharge is the "Porthmadog Cut"
This station discharged sewage 98 time(s) during 2022.
The station discharged for a total of 37 hour(s).
This is around 1 day(s)* or 0.42% of the year.
98.8 | 105.1 hours
This monitor was operational for 98.8% of the year.
Leaving 105.1 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 # | CG0357801 |
| Secondary Permit # | CG0357801 |
2021
Note: Data is potentially unreliable in 2021
Due to high unavailability of the monitor
Nant Y Cyt | 0 Spills | Due to high unavailability of the monitor
0 hours | 0
The declared body of water receiving this discharge is the "Nant Y Cyt"
This station discharged sewage 0 time(s) during 2021.
The station discharged for a total of 0 hour(s).
This is around 0 day(s)* or 0% of the year.
0 | 8760 hours
This monitor was operational for 0% of the year.
Leaving 8760 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:
Data Unreliable From 01/01/2021 To 31/12/2021. Due To Erratic Telemetry Signal. Instrumentation Task Escalated Through Business As Usual For Instrumentation Defect.
*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 # | CG0357801 |
| Secondary Permit # | CG0357801 |
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