River Basins Western Wales Meirionydd Dyfi Lower Dyfi - tidal limit to Twymyn Machynlleth - Doll Street CSO
Dyfi - Tidal Limit To Twymyn at Machynlleth - Doll Street 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
449 hours | 1.7
The declared body of water receiving this discharge is the "Dyfi - Tidal Limit To Twymyn"
This station has discharged sewage 192 time(s).
The station has discharged for a total of 449 hour(s).
This is 1.7% of the time which we have data for.
In total: 18 day(s)* of elapsed time.
98.6 | 350.3 hours
This monitor has been operational for 98.6% of its total time we have data for.
There are 350.39 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Machynlleth - Doll Street CSO" is 2021, discharging sewage for 252.5 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
158.2 hours | 1.8
The declared body of water receiving this discharge is the "Dyfi - Tidal Limit To Twymyn"
This station discharged sewage 93 time(s) during 2023.
The station discharged for a total of 158.2 hour(s).
This is around 6 day(s)* or 1.8% of the year.
98.2 | 151.5 hours
This monitor was operational for 98.2% of the year.
Leaving 151.5 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 # | CG0041101 |
| Secondary Permit # | CG0041101 |
2022
38.2 hours | 0.43
The declared body of water receiving this discharge is the "Dyfi - Tidal Limit To Twymyn"
This station discharged sewage 39 time(s) during 2022.
The station discharged for a total of 38.2 hour(s).
This is around 1 day(s)* or 0.43% 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 # | CG0041101 |
| Secondary Permit # | CG0041101 |
2021
252.5 hours | 2.88
The declared body of water receiving this discharge is the "Dyfi - Tidal Limit To Afon Twymyn"
This station discharged sewage 60 time(s) during 2021.
The station discharged for a total of 252.5 hour(s).
This is around 10 day(s)* or 2.88% of the year.
99.1 | 73.5 hours
This monitor was operational for 99.1% of the year.
Leaving 73.5 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 # | CG0041101 |
| Secondary Permit # | CG0041101 |
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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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