Morfa Harlech - Drain at Harlech Terminal Ps (Outfall B)
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 "Morfa Harlech - Drain" This station has discharged sewage 213 time(s). The station has discharged for a total of 2034.5 hour(s). This is 7.74% of the time which we have data for. In total: 84 day(s)* of elapsed time.
99 | 262.8 hours This monitor has been operational for 99% of its total time we have data for. There are 262.8 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Harlech Terminal Ps (Outfall B)" is 2023, discharging sewage for 1475 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
Morfa Harlech - Drain | 132 Spills | 1475 hours | 16.83 The declared body of water receiving this discharge is the "Morfa Harlech - Drain" This station discharged sewage 132 time(s) during 2023. The station discharged for a total of 1475 hour(s). This is around 61 day(s)* or 16.83% of the year.
99.5 | 38.5 hours This monitor was operational for 99.5% of the year. Leaving 38.5 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 #
CG0357101
Secondary Permit #
CG0357101
2022
Morfa Harlech - Drain | 16 Spills | 161.2 hours | 1.84 The declared body of water receiving this discharge is the "Morfa Harlech - Drain" This station discharged sewage 16 time(s) during 2022. The station discharged for a total of 161.2 hour(s). This is around 6 day(s)* or 1.84% of the year.
99.8 | 11.3 hours This monitor was operational for 99.8% of the year. Leaving 11.3 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 #
CG0357101
Secondary Permit #
CG0357101
2021
Unnamed Watercourse | 65 Spills | 398.2 hours | 4.54 The declared body of water receiving this discharge is the "Unnamed Watercourse" This station discharged sewage 65 time(s) during 2021. The station discharged for a total of 398.2 hour(s). This is around 16 day(s)* or 4.54% of the year.
99.9 | 2.6 hours This monitor was operational for 99.9% of the year. Leaving 2.6 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 #
CG0357101
Secondary Permit #
CG0357101
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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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