River Basins Humber Aire and Calder Calder Upper Calder from Walsden Water to Colden Water Hazelwood Street CSO
River Calder at Hazelwood 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
384.7 hours | 1.46
The declared body of water receiving this discharge is the "River Calder"
This station has discharged sewage 161 time(s).
The station has discharged for a total of 384.7 hour(s).
This is 1.46% of the time which we have data for.
In total: 16 day(s)* of elapsed time.
97 | 788.4 hours
This monitor has been operational for 97% of its total time we have data for.
There are 788.4 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Hazelwood Street CSO" is 2023, discharging sewage for 156.2 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
156.2 hours | 1.78
The declared body of water receiving this discharge is the "River Calder"
This station discharged sewage 69 time(s) during 2023.
The station discharged for a total of 156.2 hour(s).
This is around 6 day(s)* or 1.78% 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
99.8 | 14 hours
This monitor was operational for 99.8% of the year.
Leaving 14 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 # | WADC984 |
| Secondary Permit # | WADC984 A1 |
2022
89.5 hours | 1.02
The declared body of water receiving this discharge is the "River Calder"
This station discharged sewage 44 time(s) during 2022.
The station discharged for a total of 89.5 hour(s).
This is around 3 day(s)* or 1.02% 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
| Attribute | Value |
|---|---|
| Governing Body | The Environment Agency |
| Operator | Yorkshire Water |
| Primary Permit # | WADC984 |
| Secondary Permit # | WADC984 A1 |
2021
139 hours | 1.58
The declared body of water receiving this discharge is the "River Calder"
This station discharged sewage 48 time(s) during 2021.
The station discharged for a total of 139 hour(s).
This is around 5 day(s)* or 1.58% of the year.
92.4 | 665.7 hours
This monitor was operational for 92.4% of the year.
Leaving 665.7 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 # | WADC984 |
| Secondary Permit # | WADC984 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
Station Data Information
Station overseen (meaning either provided, or regulated) by: The Environment Agency
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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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