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 | 339 Spills | 4184.1 hours | 15.92
The declared body of water receiving this discharge is the "River Calder" This station has discharged sewage 339 time(s). The station has discharged for a total of 4184.1 hour(s). This is 15.92% of the time which we have data for. In total: 174 day(s)* of elapsed time.
95.3 | 1226.4 hours This monitor has been operational for 95.3% of its total time we have data for. There are 1226.4 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Princess Bridge No 2 CSO" is 2023, discharging sewage for 1858.1 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 | 138 Spills | 1858.1 hours | 21.21 The declared body of water receiving this discharge is the "River Calder" This station discharged sewage 138 time(s) during 2023. The station discharged for a total of 1858.1 hour(s). This is around 77 day(s)* or 21.21% 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
87.1 | 1123.9 hours This monitor was operational for 87.1% of the year. Leaving 1123.9 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 2023: Sensor Failure / Issue
The following description has been given for downtime related actions intended, or taken, by the operator in 2023: Resolved - Dec
*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 #
WRA8487
Secondary Permit #
WRA8487 A1
2022
River Calder | 84 Spills | 878.1 hours | 10.02 The declared body of water receiving this discharge is the "River Calder" This station discharged sewage 84 time(s) during 2022. The station discharged for a total of 878.1 hour(s). This is around 36 day(s)* or 10.02% of the year. The following reasons have been given for the high spill frequency in 2022: Performance - Other Maintenance / Capital Works (E.G. Jetting) The following comments have been given on the station operators intended actions: Scheduled
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
Attribute
Value
Governing Body
The Environment Agency
Operator
Yorkshire Water
Primary Permit #
WRA8487
Secondary Permit #
WRA8487 A1
2021
River Calder | 117 Spills | 1447.8 hours | 16.52 The declared body of water receiving this discharge is the "River Calder" This station discharged sewage 117 time(s) during 2021. The station discharged for a total of 1447.8 hour(s). This is around 60 day(s)* or 16.52% of the year.
99.6 | 35 hours This monitor was operational for 99.6% of the year. Leaving 35 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 #
WRA8487
Secondary Permit #
WRA8487 A1
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Local Information
Nearby Flood Warnings
Upper River Calder catchment
Nearby Alert Areas
River Calder at Central Mytholmroyd
River Calder and Hebden Water at Hebden Bridge
River Calder at Hebden Bridge - Mytholm and Hebble End
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