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River Calder at Bonegate Lane 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 - 2022-2023
River Calder | 289 Spills |
1961 hours | 11.19


The declared body of water receiving this discharge is the "River Calder"
This station has discharged sewage 289 time(s).
The station has discharged for a total of 1961 hour(s).
This is 11.19% of the time which we have data for.
In total: 81 day(s)* of elapsed time.

96.5 | 613.2 hours
This monitor has been operational for 96.5% of its total time we have data for.
There are 613.2 hours unaccounted for due to downtime of the monitor.


The worst year in our records for the "Bonegate Lane CSO" is 2023, discharging sewage for 1244.2 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 | 162 Spills |
1244.2 hours | 14.2

The declared body of water receiving this discharge is the "River Calder"
This station discharged sewage 162 time(s) during 2023.
The station discharged for a total of 1244.2 hour(s).
This is around 51 day(s)* or 14.2% 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

94.9 | 440.6 hours
This monitor was operational for 94.9% of the year.
Leaving 440.6 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 #WRA8439
Secondary Permit #WRA8439 A1

2022
River Calder | 127 Spills |
716.7 hours | 8.18

The declared body of water receiving this discharge is the "River Calder"
This station discharged sewage 127 time(s) during 2022.
The station discharged for a total of 716.7 hour(s).
This is around 29 day(s)* or 8.18% 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

99.7 | 21.9 hours
This monitor was operational for 99.7% of the year.
Leaving 21.9 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 #WRA8439
Secondary Permit #WRA8439 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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Station Data Information
Station overseen (meaning either provided, or regulated) by: The Environment Agency
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