WFD Cycle 2 River Invertebrate Classification
This dataset is a subset of "WFD Classification Status Cycle 2" and contains classification data for benthic invertebrates in rivers. Benthic invertebrates can be used to indicate the ecological status of a river. Data on number of taxa (NTAXA) and average score per taxa (ASPT) is run through the River Invertebrate Classification Tool (RICT). Bias values are applied to these scores to account for identification and sample sorting errors. The actual (observed) scores are compared with a predicted score (reflecting a river in pristine condition). The comparison of the observed to expected scores is known as an Ecological Quality Ratio (EQR). Means of the annual EQRs are used to produce a benthic invertebrate classification (High, Good, Moderate, Poor, Bad) of the monitoring site for Water Framework Directive (WFD) purposes. The data is then run through another tool called VISCOUS to produce a water body level classification. Attribution statement: © Environment Agency copyright and/or database right 2015. All rights reserved.
dataset
https://environment.data.gov.uk/datafiles/f5784ef5c29f450abf08beb7befe897b
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
e78e8d36-5cb7-4622-9c03-ae1372aad90c
eng
http://www.opengis.net/def/crs/EPSG/0/27700
environment
OpenData
EC Directive
water quality
publication
2010-01-13
-6.236
2.072
55.816
49.943
GB-ENG
2015-12-02
creation
2015-12-09
annually
The Water Framework Directive classification system is risk based and focuses on where there is likely to be a problem. It uses a principle known as "one out, all out", which means the poorest individual results drive the overall classification for a water body. It reports on over 30 quality elements, grouped into ecological status and chemical status. Ecological status includes physico-chem (e.g. nutrients, pH, dissolved oxygen, ammonia) , biological elements (e.g. phytoplankton, macroalgae, fish, invertebrates) , specific pollutants (e.g. metals and compounds, organic compounds) , hydromorphology (e.g. depth, width, flow, structure). Chemical status is assessed using priority substances, priority hazardous substances and other pollutants that present a significant risk to the water environment.
Proprietary format | MS Excel (XLS)
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