BGS Hosted Metadata
Conwy catchment - spatial water chemistry dataset
Surface water quality data for the Conwy catchment, North Wales are presented. The data cover stream and estuary survey locations sampled manually from 2007 to 2011 at varying intervals between fortnightly and quarterly. Survey locations were selected as draining the main landscape classes in the catchment, which include upland (>300m) and lowland (<300m) environments under trees, moorland or improved agriculture. Also included are a suite of locations on the major rivers, and in the estuary. The purpose of the data is to provide support for estimating loads and testing hypotheses relating to the relationship between subcatchment properties and water quality, and the relative importance of mixing and in-stream processes in influencing downstream water quality. Streams draining peat, with high dissolved organic carbon concentrations, are well represented. Upland drainage is generally acidic, and lowland circum-neutral. The lowland rivers are not heavily contaminated with nutrients, although they show evidence of some loss of nitrates in particular. There is little industry in the catchment beyond agriculture and tourism, though there is some legacy contamination from metal mines in a small part of the catchment. Measurements are provided for major cations and anions, pH, alkalinity, DOC, Al, Fe and conductivity for most samples, with values for a wide range of trace elements for a limited number of samples. Full details about this dataset can be found at https://doi.org/10.5285/c53a1f93-f64c-4d84-82a7-44038a394c59
Simple
- Date (Publication)
- 2013-07-26
- Date (Creation)
- 2011-08-25
- Citation identifier
- https://catalogue.ceh.ac.uk/id/c53a1f93-f64c-4d84-82a7-44038a394c59
- Citation identifier
- doi: / 10.5285/c53a1f93-f64c-4d84-82a7-44038a394c59
- Other citation details
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Cooper, D.M., Evans, C., Norris, D., Burden, A., Lawler, A. (2013). Conwy catchment - spatial water chemistry dataset. NERC Environmental Information Data Centre 10.5285/c53a1f93-f64c-4d84-82a7-44038a394c59
- Point of contact
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Organisation name Individual name Electronic mail address Role Centre for Ecology & Hydrology Cooper, D.M. Author Centre for Ecology & Hydrology Evans, C.
Author Centre for Ecology & Hydrology Norris, D. Author Centre for Ecology & Hydrology Burden, A. Author Centre for Ecology & Hydrology Lawler, A.
Author NERC Environmental Information Data Centre Publisher NERC EDS Environmental Information Data Centre Custodian UK Centre for Ecology & Hydrology Cooper, D.
Point of contact UK Centre for Ecology & Hydrology Owner
- Maintenance and update frequency
- Annually
- Maintenance note
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Approximately annually
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GEMET - INSPIRE themes, version 1.0
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Environmental Monitoring Facilities
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GeoNames
- Keywords
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- Water quality
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Conwy Catchment
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river
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stream
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lake
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water quality
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hydrochemistry
- Access constraints
- Other restrictions
- Other constraints
- no limitations
- Use constraints
- Other restrictions
- Use constraints
- Other restrictions
- Other constraints
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© UK Centre for Ecology & Hydrology
- Use constraints
- Other restrictions
- Other constraints
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If you reuse this data, you should cite: Cooper, D.M., Evans, C., Norris, D., Burden, A., Lawler, A. (2013). Conwy catchment - spatial water chemistry dataset. NERC Environmental Information Data Centre https://doi.org/10.5285/c53a1f93-f64c-4d84-82a7-44038a394c59
- Spatial representation type
- Text, table
- Language
- English
- Character set
- UTF8
- Topic category
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- Climatology, meteorology, atmosphere
- Environment
- Geoscientific information
- Inland waters
- Begin date
- 2006-09-12
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- Unique resource identifier
- WGS 84
- Distribution format
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Name Version Comma-separated values (CSV)
- Distributor contact
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Organisation name Individual name Electronic mail address Role NERC EDS Environmental Information Data Centre
Distributor
- OnLine resource
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Protocol Linkage Name https://data-package.ceh.ac.uk/data/c53a1f93-f64c-4d84-82a7-44038a394c59 Download the data
- OnLine resource
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Protocol Linkage Name https://data-package.ceh.ac.uk/sd/c53a1f93-f64c-4d84-82a7-44038a394c59.zip Documents
- Hierarchy level
- Dataset
- Other
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dataset
Conformance result
- Title
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Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
- Date (Publication)
- 2010-12-08
- Statement
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Water samples were collected at 67 sites within the Conwy catchment, N. Wales. Many of the sampling sites are headwaters; some are on major tributaries or the main Conwy river. Headwater sites were selected in a manner loosely stratified by 'landscape class' formed by combining dominant land use and soils classes. However, site locations were not randomised, but all readily accessible from roads. The purpose of data collection was to 1) To help identify statistical relationships between headwater stream chemistry and catchment characteristics and 2) To provide test data for modelling stream water chemistry at downstream sites. The PEARLS/CASCADE model has been used for this purpose. In recent years the focus has been on the carbon budget, and the data may be compared with data from other experimental and survey projects within the catchment. Many sites were originally selected for acid rain research and have earlier data not included in the database. These sites were part of a wider network covering North and Mid Wales. For some sites there are additional data from sampling by other bodies, such as the Environment Agency (EA). Other Conwy sites not recorded may also have EA or other data. Samples were filtered immediately after collection through a 0.45µm cellulose nitrate filter paper. In situ measurements of pH and conductivity were taken at the same time as water samples were collected. Samples were stored below 4°C before analysis in the UKAS accredited labs in CEH Lancaster. The results from 60 determinands are presented in the dataset, including the standard suite of base cations, anions and metals. Full details of site location, field and laboratory methodology is included in the supporting documents that accompany the dataset.
Metadata
- File identifier
- c53a1f93-f64c-4d84-82a7-44038a394c59 XML
- Metadata language
- English
- Character set
- 8859 Part 1
- Hierarchy level
- Dataset
- Hierarchy level name
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dataset
- Date stamp
- 2025-11-13T16:17:39
- Metadata standard name
- UK GEMINI
- Metadata standard version
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2.3
- Metadata author
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Organisation name Individual name Electronic mail address Role NERC EDS Environmental Information Data Centre Point of contact
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