River Calder at Brearley Main 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.

Sewage Reports that include this Station

Operational Summary - 2021-2023

River Calder | 298 Spills |
2437.5 hours | 9.27

The declared body of water receiving this discharge is the "River Calder"
This station has discharged sewage 298 time(s).
The station has discharged for a total of 2437.5 hour(s).
This is 9.27% of the time which we have data for.
In total: 101 day(s)* of elapsed time.

83.3 | 4380 hours
This monitor has been operational for 83.3% of its total time we have data for.
There are 4380 hours unaccounted for due to downtime of the monitor.

The worst year in our records for the "Brearley Main Sewer CSO" is 2023, discharging sewage for 1419 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 | 121 Spills |
1419 hours | 16.19
The declared body of water receiving this discharge is the "River Calder"
This station discharged sewage 121 time(s) during 2023.
The station discharged for a total of 1419 hour(s).
This is around 59 day(s)* or 16.19% 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

97.6 | 209.3 hours
This monitor was operational for 97.6% of the year.
Leaving 209.3 hours unaccounted for in the data.

*This is total time in days, not individual days of the year.

Permit & Governance

Attribute	Value
Governing Body	The Environment Agency
Operator	Yorkshire Water
Primary Permit #	WRA9268
Secondary Permit #	WRA9268 A1

2022

River Calder | 77 Spills |
553.5 hours | 6.31
The declared body of water receiving this discharge is the "River Calder"
This station discharged sewage 77 time(s) during 2022.
The station discharged for a total of 553.5 hour(s).
This is around 23 day(s)* or 6.31% 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

80.6 | 1697.6 hours
This monitor was operational for 80.6% of the year.
Leaving 1697.6 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 2022:
Comms Failure / Issue

The following description has been given for downtime related actions intended, or taken, by the operator in 2022:
Resolved - Nov

*This is total time in days, not individual days of the year.

Permit & Governance

Attribute	Value
Governing Body	The Environment Agency
Operator	Yorkshire Water
Primary Permit #	WRA9268
Secondary Permit #	WRA9268 A1

2021

Note: Data is potentially unreliable in 2021
Due to high unavailability of the monitor

River Calder | 100 Spills |
465 hours | 5.3
The declared body of water receiving this discharge is the "River Calder"
This station discharged sewage 100 time(s) during 2021.
The station discharged for a total of 465 hour(s).
This is around 19 day(s)* or 5.3% of the year.

73.8 | 2295.1 hours
This monitor was operational for 73.8% of the year.
Leaving 2295.1 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:
Telemetry Or Data Archiving Failure / Issue

The following description has been given for downtime related actions intended, or taken, by the operator in 2021:
Resolved - May

*This is total time in days, not individual days of the year.

Permit & Governance

Attribute	Value
Governing Body	The Environment Agency
Operator	Yorkshire Water
Primary Permit #	WRA9268
Secondary Permit #	WRA9268 A1

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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

Upper River Calder catchment

River Calder at Central Mytholmroyd

River Calder and Hebden Water at Hebden Bridge

River Calder at Hebden Bridge - Mytholm and Hebble End

Station Data Information

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