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River Darwen at Anchor 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 - 2021-2022
River Darwen | 249 Spills |
4458 hours | 25.44


The declared body of water receiving this discharge is the "River Darwen"
This station has discharged sewage 249 time(s).
The station has discharged for a total of 4458 hour(s).
This is 25.44% of the time which we have data for.
In total: 185 day(s)* of elapsed time.

72 | 4905.6 hours
This monitor has been operational for 72% of its total time we have data for.
There are 4905.6 hours unaccounted for due to downtime of the monitor.


The worst year in our records for the "Anchor Lane CSO" is 2022, discharging sewage for 2582.6 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 - 2022
River Darwen | 124 Spills |
2582.6 hours | 29.48

The declared body of water receiving this discharge is the "River Darwen"
This station discharged sewage 124 time(s) during 2022.
The station discharged for a total of 2582.6 hour(s).
This is around 107 day(s)* or 29.48% of the year.

The following reasons have been given for the high spill frequency in 2022:
Performance - Asset Configuration (E.G. Ps/Rising Main/Storm Tanks)

The following comments have been given on the station operators intended actions:
Resolved - January After Reporting Year

44.4 | 4862.6 hours
This monitor was operational for 44.4% of the year.
Leaving 4862.6 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:
Capital / Maintenance Works Affect Edm Operation

The following description has been given for downtime related actions intended, or taken, by the operator in 2022:
N/A - Ongoing Investigation


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

Permit & Governance

AttributeValue
Governing BodyThe Environment Agency
OperatorUnited Utilities
Primary Permit #NPSWQD002980
Secondary Permit #BBN0165

2021
River Darwen | 125 Spills |
1875.4 hours | 21.4

The declared body of water receiving this discharge is the "River Darwen"
This station discharged sewage 125 time(s) during 2021.
The station discharged for a total of 1875.4 hour(s).
This is around 78 day(s)* or 21.4% of the year.

The following reasons have been given for the high spill frequency in 2021:
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
OperatorUnited Utilities
Primary Permit #NPSWQD002980
Secondary Permit #BBN0165


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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
No flood warning icon

River Darwen at Darwen, affecting Hollins Grove off Blackburn Road between Bright St and Clarence St


No flood warning icon

River Darwen at Darwen, between Bright Street and Vale Street in the Livesey Fold area of Darwen


No flood warning icon

Upper River Darwen at Darwen, Cross Street to Holme Street


No flood warning icon

River Darwen at Darwen, comprising properties between Hardman Way and the M65


No flood warning icon

Upper River Darwen at Darwen, Clough Street to Cross Street


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