Cite this dataset as
Daldorph, P. (2017). Source apportionment of nutrient contributions to rivers in England and Wales modelled with SAGIS. NERC Environmental Information Data Centre. (Dataset). https://doi.org/10.5285/8c5d9e38-0244-4a39-8600-a85513a6fecf
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Source apportionment of nutrient contributions to rivers in England and Wales modelled with SAGIS
SAGIS is a modelling framework was developed through the UK Water Industry Research Programme (UKWIR) project 'Chemical Source Apportionment under the WFD' [1], with support from the Environment Agency and SEPA. The model is also described in [2]
[1] UKWIR (2012) Chemical Source Apportionment under the WFD (12/WW/02/3). Final report for UK Water Industry Research, 1 Queen Annes Gate, London, ISBN: 1 84057 637 5.
[2] Comber, S.D.; Smith, R.; Daldorph, P.; Gardner, M.J.; Constantino, C.; Ellor, B. (2013) Development of a Chemical Source Apportionment Decision Support Framework for Catchment Management. Environ. Sci. Technol. 47, 9824-9832
Format
ESRI shapefile
Spatial information
- Study area
-
- Spatial representation type
- Vector
- Spatial reference system
- OSGB 1936 / British National Grid
Temporal information
- Temporal extent
-
2006-01-01 to 2009-12-31
Provenance & quality
Loads are converted to concentrations in river waters using the SIMulation of CATchments (SIMCAT) water quality model, which is incorporated within SAGIS, so that the contribution to in-stream concentrations from individual sources can be quantified. Diffuse sources of nutrient pollution are incorporated into SAGIS from the Phosphorus and Sediment Yield Characterisation In Catchments (PSYCHIC) model (developed by a consortium of academic and government organisations led by ADAS Water Quality).
SAGIS models are not time based and do not show seasonal variation; river flow can vary according to seasonal changes which would have an impact on results. The model will also always be a simplified version of reality and so must be used as an advisory tool and not as the sole basis of decisions. Data is often subject to change and so the models require regular updates. Livestock and arable inputs have been calculated from the ADAS models PSYCHIC and NEAPN and have been shown to overestimate inputs in some areas. There is also a related issue, of changing crop types and land use.
Citations
Correspondence/contact details
Peterborough
PE2 6FZ
UK
Author
Other contacts
- Rights holder
-
UK Water Industry Research
- Custodian
-
NERC EDS Environmental Information Data Centreinfo@eidc.ac.uk
- Publisher
-
NERC Environmental Information Data Centreinfo@eidc.ac.uk
- Owner
Additional metadata
- Topic categories
- environment
- INSPIRE theme
- Environmental Monitoring Facilities
- Keywords
- agricultural effluent , arable farming , highway , industrial effluent , livestock farming , nutrient , pollutant deposition , Pollution , river , runoff , SAGIS , SIMCAT , waste water
- Last updated
- 01 March 2024 11:52
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CITE AS: Daldorph, P. (2017). Source apportionment of nutrient contributions to rivers in England and Wales modelled with SAGIS. NERC Environmental Information Data Centre. https://doi.org/10.5285/8c5d9e38-0244-4a39-8600-a85513a6fecf
The following copyright notice should be placed on all copies of information or images derived from this dataset: 'Based upon [insert dataset name] © Copyright and Database right UKWIR.'