Thames at Friday Street, Henley

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

Thames | 32 Spills |
336.1 hours | 1.27

The declared body of water receiving this discharge is the "Thames"
This station has discharged sewage 32 time(s).
The station has discharged for a total of 336.1 hour(s).
This is 1.27% of the time which we have data for.
In total: 14 day(s)* of elapsed time.

75 | 6570 hours
This monitor has been operational for 75% of its total time we have data for.
There are 6570 hours unaccounted for due to downtime of the monitor.

The worst year in our records for the "Friday Street, Henley" is 2021, discharging sewage for 323.8 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

Thames | 14 Spills |
11.8 hours | 0.13
The declared body of water receiving this discharge is the "Thames"
This station discharged sewage 14 time(s) during 2023.
The station discharged for a total of 11.8 hour(s).
This is around 0 day(s)* or 0.13% of the year.

87.7 | 1072.2 hours
This monitor was operational for 87.7% of the year.
Leaving 1072.2 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:
Telemetry Or Data Archiving Failure / Issue

The following description has been given for downtime related actions intended, or taken, by the operator in 2023:
N/A - Ongoing Investigation

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

Permit & Governance

Attribute	Value
Governing Body	The Environment Agency
Operator	Thames Water
Primary Permit #	TEMP.1003
Secondary Permit #	TEMP.1003

2022

Note: Data is potentially unreliable in 2022
Due to high unavailability of the monitor

Thames | 1 Spills |
0.4 hours | 0
The declared body of water receiving this discharge is the "Thames"
This station discharged sewage 1 time(s) during 2022.
The station discharged for a total of 0.4 hour(s).
This is around 0 day(s)* or 0% of the year.

72.4 | 2416.8 hours
This monitor was operational for 72.4% of the year.
Leaving 2416.8 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:
Telemetry Or Data Archiving Failure / Issue

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

Attribute	Value
Governing Body	The Environment Agency
Operator	Thames Water
Primary Permit #	TEMP.1003
Secondary Permit #	TEMP.1003

2021

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

Thames | 17 Spills |
323.8 hours | 3.69
The declared body of water receiving this discharge is the "Thames"
This station discharged sewage 17 time(s) during 2021.
The station discharged for a total of 323.8 hour(s).
This is around 13 day(s)* or 3.69% of the year.

66 | 2975.7 hours
This monitor was operational for 66% of the year.
Leaving 2975.7 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:
Sensor Failure / Issue

The following description has been given for downtime related actions intended, or taken, by the operator in 2021:
Resolved - June

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

Permit & Governance

Attribute	Value
Governing Body	The Environment Agency
Operator	Thames Water
Primary Permit #	TEMP.1003
Secondary Permit #	TEMP.1003

FloodMapper is not affiliated with this monitoring stations operator(s) or any other entities that may be mentioned on this page.
All trademarks and registered trademarks are the property of their respective owners.
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

River Thames for Henley, Remenham, and Medmenham

River Thames from Mapledurham to Sonning

River Thames for Shiplake, Lower Shiplake and Wargrave

River Thames at Hurley and Harleyford

Properties closest to the River Thames from All Saints Church, Bisham to Little Marlow

River Thames at Bisham village and Marlow town

River Thames in the Playhatch, Sonning and Sonning Eye area

River Thames for Henley, Remenham, Medmenham and its tributaries

Groundwater flooding in the Henley and Assendon area

River Thames for Shiplake, Lower Shiplake and Wargrave

Nearby Stations

Nearby Sewage Discharge Stations

Hambledon Sewage Treatment Works

Henley Wastewater Treatment Works

Station Data Information

Station overseen (meaning either provided, or regulated) by: The Environment Agency
The information displayed here is used under license. We are not affiliated with any governing, or other, bodies. Nor do they necessarily endorse us, or us them.
Please note that FloodMapper does not verify or check the accuracy of the data provided by third parties. The data is used as received from the source. Any underlying errors, inconsistencies, or inaccuracies in the original data will be reflected in the information presented on our platform. Users are advised to exercise their own judgment and caution when using the data for decision-making purposes.
Information about our data sources and licenses can be found

FloodMapper is an independent site and is not associated with any government bodies (e.g. Environment Agency).