Event Duration Monitoring - Storm Overflows - Annual Returns

Published by:
Environment Agency
Last updated:
21 March 2023
Topic:
Not added
Licence:
Other Licence
View licence information

Summary

This Event Duration Monitoring dataset relates to the performance of storm overflows in England. Data are provided by Water and Sewerage Companies (WaSCs) to the Environment Agency each year as part of their regulatory Annual Return, to fulfil their permitted conditions to discharge from these storm overflows under the Environmental Permitting Regulations.

Data files are provided by year (one for 2020, one for 2021) and include a sheet for each of the 10 WaSCs with storm overflows in England. Each WaSC sheet shows how often and how long each monitored storm overflow discharged during that year. From 2021 onwards the dataset also includes reasons why event duration monitors may have provided information for <90% of the relevant return period, and why an overflow may have high spill counts in that period. These data reflect the best available information held by the WaSC at time of submission.

The data file for each year also contains key summary data. These include: number of storm overflows monitored, number of storm overflows returning spill counts, average spill duration and average spill count for each WaSC.

A third data file contains the annual key summary statistics from respective years plus a table showing long-term trends from 2016-2021. Attribution Statement: © Environment Agency copyright and/or database right 2022. All rights reserved.

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Data links

Link to the data Format File added Data preview
Event Duration Monitoring - Storm Overflows - Annual Returns - 2020 - dataset download N/A 21 March 2023 Not available
Event Duration Monitoring - Storm Overflows - Annual Returns - 2021 - dataset download N/A 21 March 2023 Not available
Event Duration Monitoring - Storm Overflows - Annual Returns - Long-term Trends - dataset download N/A 21 March 2023 Not available

Additional information

View additional metadata
Added to data.gov.uk
2023-03-16
Access contraints
There are no public access constraints to this data. Use of this data is subject to the licence identified.
Harvest GUID
21e15f12-0df8-4bfc-b763-45226c16a8ac
Extent
Latitude: 55.816° to 49.943°
Longitude: -6.236° to 2.072°
Spatial reference system
http://www.opengis.net/def/crs/EPSG/0/27700
Dataset reference date
2021-03-30 (creation)
2022-03-30 (revision)
Frequency of update
annually
Responsible party
Environment Agency (pointOfContact)
ISO 19139 resource type
dataset
Metadata language
eng
Source Metadata
XML
HTML

Contact

Enquiries

https://support.environment.data.gov.uk/hc/en-gb

Freedom of Information (FOI) requests

National Customer Contact Centre Freedom of information requests for this dataset

Licence information

Open Government Licence