Severn Lower at Rhymney Valley Trunk Sewer CSO
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
6506 hours | 24.75
The declared body of water receiving this discharge is the "Severn Lower"
This station has discharged sewage 404 time(s).
The station has discharged for a total of 6506 hour(s).
This is 24.75% of the time which we have data for.
In total: 271 day(s)* of elapsed time.
95.6 | 1138.7 hours
This monitor has been operational for 95.6% of its total time we have data for.
There are 1138.79 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Rhymney Valley Trunk Sewer CSO" is 2023, discharging sewage for 2394 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
2394 hours | 27.32
The declared body of water receiving this discharge is the "Severn Lower"
This station discharged sewage 141 time(s) during 2023.
The station discharged for a total of 2394 hour(s).
This is around 99 day(s)* or 27.32% of the year.
99.9 | 1.7 hours
This monitor was operational for 99.9% of the year.
Leaving 1.7 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 # | AN0305901 |
| Secondary Permit # | AN0305901 |
2022
2086.5 hours | 23.81
The declared body of water receiving this discharge is the "Severn Lower"
This station discharged sewage 128 time(s) during 2022.
The station discharged for a total of 2086.5 hour(s).
This is around 86 day(s)* or 23.81% of the year.
99.9 | 0.8 hours
This monitor was operational for 99.9% of the year.
Leaving 0.8 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 # | AN0305901 |
| Secondary Permit # | AN0305901 |
2021
2025.5 hours | 23.12
The declared body of water receiving this discharge is the "Rhymney R - Conf Nant Cylla To Chapel Wood"
This station discharged sewage 135 time(s) during 2021.
The station discharged for a total of 2025.5 hour(s).
This is around 84 day(s)* or 23.12% of the year.
89.5 | 912.7 hours
This monitor was operational for 89.5% of the year.
Leaving 912.7 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 10/04 To 17/05/2021 . Due To Static Telemetry Signal, Resolved
*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 # | AN0305901 |
| Secondary Permit # | AN0305901 |
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Local Information
Station Data Information
Station overseen (meaning either provided, or regulated) by: Natural Resources Wales
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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
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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