River Basins South West Dorset Stour Dorset Stour (Lower) Cooper Dean Combined Sewer Overflow
River Basins . . . Stour (Lower) Cooper Dean Combined Sewer Overflow
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River Stour Via Sws at Cooper Dean Combined Sewer Overflow

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 Stour Via Sws | 51 Spills |
136.6 hours | 0.51


The declared body of water receiving this discharge is the "River Stour Via Sws"
This station has discharged sewage 51 time(s).
The station has discharged for a total of 136.6 hour(s).
This is 0.51% of the time which we have data for.
In total: 5 day(s)* of elapsed time.

97.6 | 613.1 hours
This monitor has been operational for 97.6% of its total time we have data for.
There are 613.19 hours unaccounted for due to downtime of the monitor.


The worst year in our records for the "Cooper Dean Combined Sewer Overflow" is 2023, discharging sewage for 84 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 Stour Via Sws | 28 Spills |
84 hours | 0.95

The declared body of water receiving this discharge is the "River Stour Via Sws"
This station discharged sewage 28 time(s) during 2023.
The station discharged for a total of 84 hour(s).
This is around 3 day(s)* or 0.95% of the year.

99.8 | 13.1 hours
This monitor was operational for 99.8% of the year.
Leaving 13.1 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
OperatorWessex Water
Primary Permit #041221
Secondary Permit #18015C

2022
River Stour Via Sws | 12 Spills |
14.2 hours | 0.16

The declared body of water receiving this discharge is the "River Stour Via Sws"
This station discharged sewage 12 time(s) during 2022.
The station discharged for a total of 14.2 hour(s).
This is around 0 day(s)* or 0.16% of the year.

99.9 | 5.2 hours
This monitor was operational for 99.9% of the year.
Leaving 5.2 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
OperatorWessex Water
Primary Permit #041221
Secondary Permit #18015C

2021
River Stour Via Sws | 11 Spills |
38.3 hours | 0.43

The declared body of water receiving this discharge is the "River Stour Via Sws"
This station discharged sewage 11 time(s) during 2021.
The station discharged for a total of 38.3 hour(s).
This is around 1 day(s)* or 0.43% of the year.

95.5 | 394.2 hours
This monitor was operational for 95.5% of the year.
Leaving 394.2 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
OperatorWessex Water
Primary Permit #41221
Secondary Permit #18015C


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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

Lower Stour at Redhill and Wheatplot Home Sites


No flood warning icon

Lower Stour at Holdenhurst Village


No flood warning icon

Lower Stour and tributaries


No flood warning icon

Lower Stour at Stour Park Homes


No flood warning icon

Lower Stour at Iford Bridge Home Park


No flood warning icon

Lower Stour at Beaulieu Garden Park Home Site


No flood warning icon

Lower Stour at Jumpers Common and A35 Iford Bridge area, Christchurch


No flood warning icon

Lower Stour from Sturminster Marshall to Christchurch


No flood warning icon

Lower Stour at Grove Farm Meadow Holiday Park


No flood warning icon

Lower Stour at Canford


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