Clvrt Trib River Dearne at Stairfoot Grange 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.

Sewage Reports that include this Station

Operational Summary - 2021-2023

Clvrt Trib River Dearne | 160 Spills |
506.5 hours | 1.92

The declared body of water receiving this discharge is the "Clvrt Trib River Dearne"
This station has discharged sewage 160 time(s).
The station has discharged for a total of 506.5 hour(s).
This is 1.92% of the time which we have data for.
In total: 21 day(s)* of elapsed time.

78.3 | 5694 hours
This monitor has been operational for 78.3% of its total time we have data for.
There are 5694 hours unaccounted for due to downtime of the monitor.

The worst year in our records for the "Stairfoot Grange CSO" is 2021, discharging sewage for 201 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

Clvrt Trib River Dearne | 62 Spills |
164 hours | 1.87
The declared body of water receiving this discharge is the "Clvrt Trib River Dearne"
This station discharged sewage 62 time(s) during 2023.
The station discharged for a total of 164 hour(s).
This is around 6 day(s)* or 1.87% 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

83.2 | 1468.1 hours
This monitor was operational for 83.2% of the year.
Leaving 1468.1 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 - Oct

*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 #	WRA9305
Secondary Permit #	WRA9305 A1

2022

Clvrt Trib River Dearne | 57 Spills |
141.5 hours | 1.61
The declared body of water receiving this discharge is the "Clvrt Trib River Dearne"
This station discharged sewage 57 time(s) during 2022.
The station discharged for a total of 141.5 hour(s).
This is around 5 day(s)* or 1.61% 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

99.1 | 76.2 hours
This monitor was operational for 99.1% of the year.
Leaving 76.2 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 #	WRA9305
Secondary Permit #	WRA9305 A1

2021

Note: Data is potentially unreliable in 2021
Due to high unavailability of the monitor

Clvrt Trib River Dearne | 41 Spills |
201 hours | 2.29
The declared body of water receiving this discharge is the "Clvrt Trib River Dearne"
This station discharged sewage 41 time(s) during 2021.
The station discharged for a total of 201 hour(s).
This is around 8 day(s)* or 2.29% of the year.

53.7 | 4055.8 hours
This monitor was operational for 53.7% of the year.
Leaving 4055.8 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 2021:
Comms Failure / Issue

The following description has been given for downtime related actions intended, or taken, by the operator in 2021:
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 #	WRA9305
Secondary Permit #	WRA9305 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

Nearby Flood Warnings

None

Nearby Alert Areas

None

Station Data Information

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