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 Derwent | 144 Spills | 402.8 hours | 1.53
The declared body of water receiving this discharge is the "River Derwent" This station has discharged sewage 144 time(s). The station has discharged for a total of 402.8 hour(s). This is 1.53% of the time which we have data for. In total: 16 day(s)* of elapsed time.
92.6 | 1927.1 hours This monitor has been operational for 92.6% of its total time we have data for. There are 1927.19 hours unaccounted for due to downtime of the monitor.
The worst year in our records for the "Station Approach CSO" is 2021, discharging sewage for 254 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 Derwent | 46 Spills | 112.9 hours | 1.28 The declared body of water receiving this discharge is the "River Derwent" This station discharged sewage 46 time(s) during 2023. The station discharged for a total of 112.9 hour(s). This is around 4 day(s)* or 1.28% of the year. The following reasons have been given for the high spill frequency in 2023: Data Collection - Confirmed Exceptional Weather – Remaining Spills Not Above Soaf Threshold The following comments have been given on the station operators intended actions: Resolved - January After Reporting Year
98.7 | 113.8 hours This monitor was operational for 98.7% of the year. Leaving 113.8 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
Severn Trent Water
Primary Permit #
T/48/21470/O
Secondary Permit #
T/48/21470/O
2022
River Derwent | 28 Spills | 35.8 hours | 0.4 The declared body of water receiving this discharge is the "River Derwent" This station discharged sewage 28 time(s) during 2022. The station discharged for a total of 35.8 hour(s). This is around 1 day(s)* or 0.4% 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
81.3 | 1631.9 hours This monitor was operational for 81.3% of the year. Leaving 1631.9 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: Sensor Failure / Issue
The following description has been given for downtime related actions intended, or taken, by the operator in 2022: Resolved - Mar
*This is total time in days, not individual days of the year.
Permit & Governance
Attribute
Value
Governing Body
The Environment Agency
Operator
Severn Trent Water
Primary Permit #
T/48/21470/O
Secondary Permit #
T/48/21470/O
2021
River Derwent | 70 Spills | 254 hours | 2.9 The declared body of water receiving this discharge is the "River Derwent" This station discharged sewage 70 time(s) during 2021. The station discharged for a total of 254 hour(s). This is around 10 day(s)* or 2.9% 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
99.4 | 44.6 hours This monitor was operational for 99.4% of the year. Leaving 44.6 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
Severn Trent Water
Primary Permit #
T/48/21470/O
Secondary Permit #
T/48/21470/O
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Local Information
Nearby Flood Warnings
None
Nearby Alert Areas
River Derwent at Chaddesden
River Derwent at Ambaston
River Derwent at Ambaston Lane
River Derwent at Alvaston
River Derwent at Raynesway
Lower Derwent in Derbyshire
River Derwent at Pride Park and Derby Railway Station
River Derwent at Elvaston Castle Country Park
River Derwent at Little Chester, Eastgate and Cattle Market
River Derwent at Racecourse Park at Chaddesden
River Derwent at Allestree Ford Lane Bridge and Darley Abbey Park
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