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 Colne | 247 Spills | 1191.3 hours | 4.53
The declared body of water receiving this discharge is the "River Colne" This station has discharged sewage 247 time(s). The station has discharged for a total of 1191.3 hour(s). This is 4.53% of the time which we have data for. In total: 49 day(s)* of elapsed time.
87.6 | 3241.1 hours This monitor has been operational for 87.6% of its total time we have data for. There are 3241.19 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Wood Bottom CSO" is 2021, discharging sewage for 506.3 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 Colne | 94 Spills | 497.5 hours | 5.67 The declared body of water receiving this discharge is the "River Colne" This station discharged sewage 94 time(s) during 2023. The station discharged for a total of 497.5 hour(s). This is around 20 day(s)* or 5.67% 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
84.1 | 1390.2 hours This monitor was operational for 84.1% of the year. Leaving 1390.2 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: Comms Failure / Issue
The following description has been given for downtime related actions intended, or taken, by the operator in 2023: Resolved - Apr
*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 #
WRA7455
Secondary Permit #
WRA7455 1
2022
River Colne | 57 Spills | 187.5 hours | 2.14 The declared body of water receiving this discharge is the "River Colne" This station discharged sewage 57 time(s) during 2022. The station discharged for a total of 187.5 hour(s). This is around 7 day(s)* or 2.14% of the year.
80.1 | 1738.8 hours This monitor was operational for 80.1% of the year. Leaving 1738.8 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: Scheduled
*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 #
WRA7455
Secondary Permit #
WRA7455 1
2021
River Colne | 96 Spills | 506.3 hours | 5.77 The declared body of water receiving this discharge is the "River Colne" This station discharged sewage 96 time(s) during 2021. The station discharged for a total of 506.3 hour(s). This is around 21 day(s)* or 5.77% of the year.
99.9 | 8.7 hours This monitor was operational for 99.9% of the year. Leaving 8.7 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 #
WRA7455
Secondary Permit #
WRA7455 1
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