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River Calder at Wharfe House 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.
Operational Summary - 2021-2023
River Calder | 328 Spills |
1604.4 hours | 6.1


The declared body of water receiving this discharge is the "River Calder"
This station has discharged sewage 328 time(s).
The station has discharged for a total of 1604.4 hour(s).
This is 6.1% of the time which we have data for.
In total: 66 day(s)* of elapsed time.

100 | 0 hours
This monitor has been operational for 100% of its total time we have data for.
There are 0 hours unaccounted for due to downtime of the monitor.


The worst year in our records for the "Wharfe House CSO" is 2021, discharging sewage for 1112.1 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
River Calder | 106 Spills |
318.4 hours | 3.63

The declared body of water receiving this discharge is the "River Calder"
This station discharged sewage 106 time(s) during 2023.
The station discharged for a total of 318.4 hour(s).
This is around 13 day(s)* or 3.63% of the year.

The following reasons have been given for the high spill frequency in 2023:
Not Asset Maintenance - Hydraulic Capacity

The following comments have been given on the station operators intended actions:
N/A - Hydraulic Capacity

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

AttributeValue
Governing BodyThe Environment Agency
OperatorYorkshire Water
Primary Permit #WRA8420
Secondary Permit #WRA8420 A1

2022
River Calder | 80 Spills |
173.9 hours | 1.98

The declared body of water receiving this discharge is the "River Calder"
This station discharged sewage 80 time(s) during 2022.
The station discharged for a total of 173.9 hour(s).
This is around 7 day(s)* or 1.98% of the year.

The following reasons have been given for the high spill frequency in 2022:
Not Asset Maintenance - Hydraulic Capacity

The following comments have been given on the station operators intended actions:
N/A - Hydraulic Capacity

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

AttributeValue
Governing BodyThe Environment Agency
OperatorYorkshire Water
Primary Permit #WRA8420
Secondary Permit #WRA8420 A1

2021
River Calder | 142 Spills |
1112.1 hours | 12.69

The declared body of water receiving this discharge is the "River Calder"
This station discharged sewage 142 time(s) during 2021.
The station discharged for a total of 1112.1 hour(s).
This is around 46 day(s)* or 12.69% 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

AttributeValue
Governing BodyThe Environment Agency
OperatorYorkshire Water
Primary Permit #WRA8420
Secondary Permit #WRA8420 A1


FloodMapper is not affiliated with this monitoring stations operator(s) or any other entities that may be mentioned on this page.
All trademarks and registered trademarks are the property of their respective owners.

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
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River Calder between Sowerby Bridge and Copley


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River Calder at Elland - North Dean Business Park to Park Road


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River Calder at Brighouse - Brookfoot Mills


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River Calder at Brighouse - Nun Bank Wood


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River Calder at Brighouse - Brookfoot Business Park


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River Calder at Elland - Saddleworth Road to Lowfields Business Park


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River Calder and River Ryburn at Sowerby Bridge


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River Calder and River Ryburn at Central Sowerby Bridge


Station Data Information
Station overseen (meaning either provided, or regulated) by: The Environment Agency
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