Historic River Quality Objectives
This record is for Approval for Access product AfA164. The River Quality Objectives (RQO) classification was used for planning water quality improvements until 2006 when the scheme ended. RQOs were assigned to all significantly sized rivers (based on river flow). RQOs were based on the River Ecosystem (RE) Classification Scheme which was introduced in 1994 to replace the National Water Council's methodology. The RE system consists of five classes (1-5) based on the same determinands used in the General Quality Assessment (GQA) chemistry assessment of Biochemical Oxygen Demand (BOD), ammonia and dissolved oxygen but also includes the additional determinands of (free (or un-ionised) ammonia, pH, hardness, dissolved copper and total zinc) that reflect the requirements of a river ecosystem. Chemical samples were taken 12 times a year. Any river quality failures, their reasons and actions to be taken, were stored in separate tables. The national RQO classification scheme ceased at the end of 2006, it is now a fixed table which will not be updated. RQO compliance figures are available for 1997-2006. Attribution statement: © Environment Agency copyright and/or database right 2015. All rights reserved.
dataset
https://environment.data.gov.uk/datafiles/ca704d1241a74b5ebdc52c6d54f457d1
protocol: WWW:LINK-1.0-http--link
name: Data_download_link
description: Data download link
https://support.environment.data.gov.uk/hc/en-gb
protocol: http:
name: DSP_CUSTOMER_FORUM
description: DEFRA Data Services Platform Customer Forum
64d6ed70-d465-11e4-9fde-f0def148f590
eng
http://www.opengis.net/def/crs/EPSG/0/27700
environment
inlandWaters
water quality
water pollution
water analysis
OpenData
publication
2012-07-20
-6.236
2.072
55.816
49.943
http://data.ordnancesurvey.co.uk/doc/country/england
http://data.ordnancesurvey.co.uk/doc/country/wales
1976-04-01
2006-03-31
creation
2007-01-01
notPlanned
The rivers ecosystem (RE) assessment scheme was a national scheme used to assess river water quality based on results of water column sampling. Sample point locations were monitored for 7 chemical parameters and annually assessed against the standards specific to each RE class. Data is represented as river stretches and stored in a stand alone access database on the O drive (Environment Agency's shared drive).
Proprietary format | ESRI, Intergraph, MS Access (MDB)
Unknown
Open Government Licence
There are no public access constraints to this data. Use of this data is subject to the licence identified.
Environment Agency
DSPcustomerforum@environment-agency.gov.uk
https://support.environment.data.gov.uk/hc/en-gb
description: Defra Data Services Forum
pointOfContact
Environment Agency
metadata@environment-agency.gov.uk
pointOfContact
2020-09-29