Conwy catchment - spatial water chemistry dataset

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Environmental Information Data Centre
Last updated:
16 February 2023
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Summary

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

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Added to data.gov.uk
2023-02-09T11:09:43
Access contraints
© UK Centre for Ecology & Hydrology
Harvest GUID
c53a1f93-f64c-4d84-82a7-44038a394c59
Extent
Latitude: 53.31° to 52.944°
Longitude: -4.031° to -3.592°
Spatial reference system
Dataset reference date
2013-07-26 (publication)
2011-08-25 (creation)
Frequency of update
annually
Responsible party
Centre for Ecology & Hydrology (author); NERC Environmental Information Data Centre (publisher); NERC EDS Environmental Information Data Centre (custodian); UK Centre for Ecology & Hydrology (pointOfContact, owner)
ISO 19139 resource type
dataset
Metadata language
eng
Source Metadata
XML
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