Freshwater marco-invertebrates are used as an indicator of water quality requirements due to the relative immobility and abundance. This dataset is made up of the species abundance values from the freshwater lake macro-invertebrates surveys conducted across Wales by Natural Resources Wales and former Environment Agency Wales. These surveys are conducted as part of on-going monitoring of lake water quality for legislative requirements and to meet business drivers.
Only a redacted version of this data is available under the Open Government Licence and available for public use, see Limitations on Public Access and Use Constraints.
