EIDC
Norton, L.; Dunbar, M.; Greene, S.; Scholefield, P.A.

Headwater stream quality for Britain

https://doi.org/10.5285/85e7beb6-e031-4397-a090-841b8c907d1b Cite this dataset
Data consist of modelled estimates of observed/expected Biological Monitoring Working Party (an index for measuring the biological quality of rivers using selected families of macroinvertebrates as biological indicators) scores for freshwater streams across Great Britain (GB). The BMWP scores (1-10) are based on the principle that macroinvertebrates differ in their perceived sensitivity or tolerance to organic pollution (i.e. nutrient enrichment). Values greater than 1 indicate high water quality. Data pooled across two survey years (1998 and 2007) was used to model the relationships between headwater stream quality and catchment/stream characteristics for headwater streams across GB based on known relationships for headwater streams in Countryside Survey squares. Modelled estimates of stream water quality were based on a Boosted Regression Tree modelling approach .
Publication date: 2016-02-04

Format

Esri shapefile

Spatial information

Study area
Spatial representation type
Raster
Spatial reference system
OSGB 1936 / British National Grid

Temporal information

Temporal extent
1998-05-01    to    2007-10-31

Provenance & quality

This national model was developed following initial work under the Countryside Survey Integrated Assessment which investigated the relationships between water quality and the characteristics of the 1km squares in which they were located.

Correspondence/contact details

Dr. Lisa Norton
UK Centre for Ecology & Hydrology
Lancaster Environment Centre, Library Avenue, Bailrigg
Lancaster
Lancashire
LA1 4AP
UNITED KINGDOM
 enquiries@ceh.ac.uk

Authors

Norton, L.
Centre for Ecology & Hydrology
Dunbar, M.
Centre for Ecology & Hydrology
Greene, S.
Centre for Ecology & Hydrology
Scholefield, P.A.
Centre for Ecology & Hydrology
ORCID iD icon https://orcid.org/0000-0003-2974-6431

Other contacts

Rights holder
Natural England
Custodian
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk
Publisher
NERC Environmental Information Data Centre
 info@eidc.ac.uk

Additional metadata

Topic categories
environment
INSPIRE theme
Hydrography
Keywords
Countryside Survey , GB , headwater streams , modelled , Modelling , water quality
Last updated
08 February 2024 17:35

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This dataset is made available under the terms of the Open Government Licence

Download the data Supporting documentation

CITE AS: Norton, L.; Dunbar, M.; Greene, S.; Scholefield, P.A. (2016). Headwater stream quality for Britain. NERC Environmental Information Data Centre. https://doi.org/10.5285/85e7beb6-e031-4397-a090-841b8c907d1b

© Natural England

The following organisations must be acknowledged by users of this dataset: NERC, Defra, the National Assembly for Wales, the Scottish Government, Natural England, Countryside Council for Wales, Scottish Natural Heritage.